Non-metal elements are often merely regarded as electronic modulators, yet their intrinsic characteristics are frequently overlooked. Indeed, non-metal elements possess notable advantages in high-abundance, excellent hydrogen adsorption and the ability of active sites to be inversely activated, rendering them potential photoelectrochemical (PEC) materials. However, weak non-metal interbinding, susceptibility to photocorrosion, and high photogenerated carrier recombination rates hinder their practical applications. Herein, for the first time, we report a novel non-metal elementary substance heterojunction Se/S based on interfacial bonding engineering strategy. Atomic-level tight coupling of sulfonyl-rich sulfur quantum dots (SQDs) with selenium microtube arrays (Se-MTAs) enhances the structural stability of Se/S and introduces crucial Se–S heterointerfacial bonds, which not only endow Se/S with robust internal electronic interactions, but also provide high-speed channels for charge separation via unique bridging. Consequently, Se/S achieves optimal photocurrent density of 3.91 mA cm−2 at 0 VRHE, accompanied by long-term stability over 24 h. It is the highest value reported to date for Se-based photocathodes without co-catalyst and outperforms most metal-selenide-based photoelectrodes. Furthermore, the direct Z-scheme charge transport mechanism is exposed by in-depth spectroscopic analyses. Our work fills the gap in application of non-metal elementary substance heterojunction for PEC, poised for potential expansion into other new-energy devices.
{"title":"Se–S bonded non-metal elementary substance heterojunction activating photoelectrochemical water splitting","authors":"Qingxia Zhou, Chuanzhen Feng, Xiaodong Wang, Jialing He, Junyu Wang, Huijuan Zhang, Yu Wang","doi":"10.1016/j.jcis.2024.11.059","DOIUrl":"10.1016/j.jcis.2024.11.059","url":null,"abstract":"<div><div>Non-metal elements are often merely regarded as electronic modulators, yet their intrinsic characteristics are frequently overlooked. Indeed, non-metal elements possess notable advantages in high-abundance, excellent hydrogen adsorption and the ability of active sites to be inversely activated, rendering them potential photoelectrochemical (PEC) materials. However, weak non-metal interbinding, susceptibility to photocorrosion, and high photogenerated carrier recombination rates hinder their practical applications. Herein, for the first time, we report a novel non-metal elementary substance heterojunction Se/S based on interfacial bonding engineering strategy. Atomic-level tight coupling of sulfonyl-rich sulfur quantum dots (SQDs) with selenium microtube arrays (Se-MTAs) enhances the structural stability of Se/S and introduces crucial Se–S heterointerfacial bonds, which not only endow Se/S with robust internal electronic interactions, but also provide high-speed channels for charge separation via unique bridging. Consequently, Se/S achieves optimal photocurrent density of 3.91 mA cm<sup>−2</sup> at 0 V<sub>RHE</sub>, accompanied by long-term stability over 24 h. It is the highest value reported to date for Se-based photocathodes without co-catalyst and outperforms most metal-selenide-based photoelectrodes. Furthermore, the direct Z-scheme charge transport mechanism is exposed by in-depth spectroscopic analyses. Our work fills the gap in application of non-metal elementary substance heterojunction for PEC, poised for potential expansion into other new-energy devices.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 868-879"},"PeriodicalIF":9.4,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142638178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-10DOI: 10.1016/j.jcis.2024.11.061
Haihong Yin , Yunfeng Wu , Zhipeng Chen , Zhirun Qian , Fuzhi Wang , Tingting Chen , Bocheng Su , Kangwei Wen , Lin Qin , Zhenguo Wang
Aqueous zinc ion batteries (AZIBs) are promising energy storage solutions due to their high energy density and safety. However, developing cathode materials that offer both high energy density and durability for Zn2+ ions storage remains challenging. Manganese (Mn) oxide-based cathodes have been developed for AZIBs due to their high discharge voltage and desirable capacity, but face challenges like poor conductivity, slow reaction kinetics, and dissolution during cycling. Doping, morphology/structure design, and protective layers are effective for enhancing the structure, conductivity, and electronic properties of Mn-based oxides. A synthetic strategy combining these methods for Mn3O4 cathodes is proposed for AZIBs. K+ ions doping in Mn3O4 (K-Mn3O4) can regulate local electronic structure, induce oxygen vacancies, improve conductivity, and provide more active sites for Zn2+ ions diffusion. Additionally, K-Mn3O4 nanochain (K-Mn3O4-NCs), with a unique chain-like nanostructure (NCs) and high aspect ratio, synthesized via Mn2+ ions chelation with nitrilotriacetic acid (NTA) and calcination, show reduced interparticle contact resistance, shorter Zn2+ ions diffusion length, and faster reaction kinetics. Meanwhile, the in-situ polymerized polyaniline (PANI) layer on K-Mn3O4-NCs shields against corrosion (K-Mn3O4-NCs@PANI), connects 1D K-Mn3O4-NCs into a continuous conductive network, suppresses volume expansion, and improves stability. Electrochemical analysis shows that K-Mn3O4-NCs@PANI exhibits higher stability and faster reaction kinetics due to a reduced bandgap, increased oxygen defects, and less coulombic repulsion between Zn2+ ions and Mn oxide hosts. The K-Mn3O4-NCs@PANI cathode achieved a high capacity of 510 mAh/g at 0.1 A/g and excellent rate capacity of 203.2 mAh/g at 5 A/g. After 20,000 cycles, it maintained a capacity of 90.3 mAh/g at 5 A/g, showing exceptional long-term stability with a minimal decay rate of 0.026 ‰ per cycle.
{"title":"K-Mn3O4-NCs@PANI nanochains for high-rate and stable aqueous zinc-ion batteries: A doping and morphology-tailored synthesis strategy","authors":"Haihong Yin , Yunfeng Wu , Zhipeng Chen , Zhirun Qian , Fuzhi Wang , Tingting Chen , Bocheng Su , Kangwei Wen , Lin Qin , Zhenguo Wang","doi":"10.1016/j.jcis.2024.11.061","DOIUrl":"10.1016/j.jcis.2024.11.061","url":null,"abstract":"<div><div>Aqueous zinc ion batteries (AZIBs) are promising energy storage solutions due to their high energy density and safety. However, developing cathode materials that offer both high energy density and durability for Zn<sup>2+</sup> ions storage remains challenging. Manganese (Mn) oxide-based cathodes have been developed for AZIBs due to their high discharge voltage and desirable capacity, but face challenges like poor conductivity, slow reaction kinetics, and dissolution during cycling. Doping, morphology/structure design, and protective layers are effective for enhancing the structure, conductivity, and electronic properties of Mn-based oxides. A synthetic strategy combining these methods for Mn<sub>3</sub>O<sub>4</sub> cathodes is proposed for AZIBs. K<sup>+</sup> ions doping in Mn<sub>3</sub>O<sub>4</sub> (K-Mn<sub>3</sub>O<sub>4</sub>) can regulate local electronic structure, induce oxygen vacancies, improve conductivity, and provide more active sites for Zn<sup>2+</sup> ions diffusion. Additionally, K-Mn<sub>3</sub>O<sub>4</sub> nanochain (K-Mn<sub>3</sub>O<sub>4</sub>-NCs), with a unique chain-like nanostructure (NCs) and high aspect ratio, synthesized via Mn<sup>2+</sup> ions chelation with nitrilotriacetic acid (NTA) and calcination, show reduced interparticle contact resistance, shorter Zn<sup>2+</sup> ions diffusion length, and faster reaction kinetics. Meanwhile, the in-situ polymerized polyaniline (PANI) layer on K-Mn<sub>3</sub>O<sub>4</sub>-NCs shields against corrosion (K-Mn<sub>3</sub>O<sub>4</sub>-NCs@PANI), connects 1D K-Mn<sub>3</sub>O<sub>4</sub>-NCs into a continuous conductive network, suppresses volume expansion, and improves stability. Electrochemical analysis shows that K-Mn<sub>3</sub>O<sub>4</sub>-NCs@PANI exhibits higher stability and faster reaction kinetics due to a reduced bandgap, increased oxygen defects, and less coulombic repulsion between Zn<sup>2+</sup> ions and Mn oxide hosts. The K-Mn<sub>3</sub>O<sub>4</sub>-NCs@PANI cathode achieved a high capacity of 510 mAh/g at 0.1 A/g and excellent rate capacity of 203.2 mAh/g at 5 A/g. After 20,000 cycles, it maintained a capacity of 90.3 mAh/g at 5 A/g, showing exceptional long-term stability with a minimal decay rate of 0.026 ‰ per cycle.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 1016-1029"},"PeriodicalIF":9.4,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-10DOI: 10.1016/j.jcis.2024.11.054
Huijun Zhang , Minjun Lei , Fei Jin , Hai Liu , Zhiliang Jin
Although traditional type II heterojunction designs for artificial photosynthesis show promise for photocatalytic hydrogen production, their redox capacity is somewhat limited due to the spatial separation of hydrogen evolution and oxidation reactions at less favorable sites. To overcome this limitation, ohmic junctions based on type II heterojunctions have been designed to enhance hydrogen evolution by transferring electrons to the metal component. In this study, a copper powder graphdiyne (Cu-GDY) composite catalyst with ohmic angle contact was synthesized by coupling copper foil with hexa-hexylbenzene. Incorporating Cu-GDY into CoGdO3 results in an interleaved band structure forming a type II heterojunction at the contact interface. This configuration overcomes the issue of the unfavorable conduction band position of CoGdO3, thereby promoting charge transfer. The internal electric field created by the Fermi level difference between Cu-GDY and CoGdO3, increase in REDOX capacity is the main reason for the increase of carrier separation rate. In addition, the plasmonic properties of copper expand the active reaction sites and promote the hydrogen evolution reaction. The composite catalyst exhibits b a hydrogen production rate that is 10.5 times higher than that of the individual catalysts. This work demonstrates that the formation of two distinct contact interfaces between Cu-GDY and CoGdO3 significantly improves the electron transfer and hydrogen evolution performance.
虽然用于人工光合作用的传统 II 型异质结设计显示出光催化制氢的前景，但由于氢气进化和氧化反应在空间上分离于较不利的位置，其氧化还原能力受到一定限制。为了克服这一局限性，人们设计了基于 II 型异质结的欧姆结，通过将电子转移到金属成分来增强氢气进化。在本研究中，通过将铜箔与六己基苯偶联，合成了具有欧姆角接触的铜粉石墨二炔（Cu-GDY）复合催化剂。在 CoGdO3 中加入 Cu-GDY 会产生交错带结构，在接触界面形成 II 型异质结。这种结构克服了 CoGdO3 不利于传导带位置的问题，从而促进了电荷转移。Cu-GDY 和 CoGdO3 之间的费米级差所产生的内电场、REDOX 容量的增加是载流子分离率提高的主要原因。此外，铜的等离子特性扩大了活性反应位点，促进了氢进化反应。复合催化剂的产氢率是单个催化剂的 10.5 倍。这项研究表明，在 Cu-GDY 和 CoGdO3 之间形成两个不同的接触界面可显著提高电子转移和氢进化性能。
{"title":"Constructing artificial photosynthetic system based on graphdiyne double heterojunction to enhance REDOX capacity and hydrogen evolution efficiency","authors":"Huijun Zhang , Minjun Lei , Fei Jin , Hai Liu , Zhiliang Jin","doi":"10.1016/j.jcis.2024.11.054","DOIUrl":"10.1016/j.jcis.2024.11.054","url":null,"abstract":"<div><div>Although traditional type II heterojunction designs for artificial photosynthesis show promise for photocatalytic hydrogen production, their redox capacity is somewhat limited due to the spatial separation of hydrogen evolution and oxidation reactions at less favorable sites. To overcome this limitation, ohmic junctions based on type II heterojunctions have been designed to enhance hydrogen evolution by transferring electrons to the metal component. In this study, a copper powder graphdiyne (Cu-GDY) composite catalyst with ohmic angle contact was synthesized by coupling copper foil with <em>hexa</em>-hexylbenzene. Incorporating Cu-GDY into CoGdO<sub>3</sub> results in an interleaved band structure forming a type II heterojunction at the contact interface. This configuration overcomes the issue of the unfavorable conduction band position of CoGdO<sub>3</sub>, thereby promoting charge transfer. The internal electric field created by the Fermi level difference between Cu-GDY and CoGdO<sub>3</sub>, increase in REDOX capacity is the main reason for the increase of carrier separation rate. In addition, the plasmonic properties of copper expand the active reaction sites and promote the hydrogen evolution reaction. The composite catalyst exhibits b a hydrogen production rate that is 10.5 times higher than that of the individual catalysts. This work demonstrates that the formation of two distinct contact interfaces between Cu-GDY and CoGdO<sub>3</sub> significantly improves the electron transfer and hydrogen evolution performance.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 901-910"},"PeriodicalIF":9.4,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142638174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The development of a low-cost, highly active, and non-precious metal catalyst for oxygen evolution reaction (OER) is of great significance. Multi-metallic catalysts containing Fe, Co, and Ni exhibit remarkable OER activity, while the specific contributions of each component and the synergistic effects in the ternary metal catalyst has remained elusive. In this work, we synthesized a series of S and N-doped mono-metallic, bi-metallic, and tri-metallic hollow carbon sphere electrocatalysts (M−SNC) with the goal of enhancing the catalysts OER activity and shedding light on the unique roles and synergistic effects of the various metals in the FeCoNi ternary metal catalyst. Our systematic analyses demonstrated the introduction of Fe effectively reduces the overpotential, Co accelerates the kinetics of OER, and the addition of Ni further improves the OER performance. Benefiting from the synergistic effects, the FeCoNi-SNC exhibits a low overpotential of 270 mV, with no morphological or structural changes after reaction, maintaining high activity for 72 h at 10 mA cm−2. Moreover, the assembled FeCoNi-SNC || Pt/C water electrolysis device operates for 65,000 s with minimal degradation, demonstrating its potential for practical application. This work presents a synergy strategy for the preparation of low-cost and highly efficient OER catalysts and further provides insights into the rational design and preparation of multicomponent catalysts.
开发用于氧进化反应（OER）的低成本、高活性和非贵金属催化剂意义重大。含有铁、钴和镍的多金属催化剂具有显著的氧进化反应活性，而三元金属催化剂中每种组分的具体贡献和协同效应却一直难以确定。在这项工作中，我们合成了一系列 S 和 N 掺杂的单金属、双金属和三金属空心碳球电催化剂 (M-SNC)，目的是提高催化剂的 OER 活性，并阐明各种金属在铁钴镍三元金属催化剂中的独特作用和协同效应。我们的系统分析表明，铁的加入有效降低了过电位，钴加速了 OER 的动力学过程，而镍的加入则进一步提高了 OER 的性能。得益于这些协同效应，FeCoNi-SNC 的过电位低至 270 mV，反应后无形态或结构变化，在 10 mA cm-2 的条件下可维持 72 小时的高活性。此外，组装好的 FeCoNi-SNC ||Pt/C 水电解装置可持续运行 65,000 秒，降解极小，证明了其实际应用的潜力。这项工作提出了一种制备低成本、高效率 OER 催化剂的协同策略，并进一步为合理设计和制备多组分催化剂提供了启示。
{"title":"Synergy strategy of multi-metals confined in heteroatom framework toward constructing high-performance water oxidation electrocatalysts","authors":"Hanzhong Ren, Hao Liu, Rentong Qin, Hucheng Fu, Weixiang Xu, Rong Jia, Jia Jiang, Yizhang Yang, Yiting Xu, Birong Zeng, Conghui Yuan, Lizong Dai","doi":"10.1016/j.jcis.2024.11.050","DOIUrl":"10.1016/j.jcis.2024.11.050","url":null,"abstract":"<div><div>The development of a low-cost, highly active, and non-precious metal catalyst for oxygen evolution reaction (OER) is of great significance. Multi-metallic catalysts containing Fe, Co, and Ni exhibit remarkable OER activity, while the specific contributions of each component and the synergistic effects in the ternary metal catalyst has remained elusive. In this work, we synthesized a series of S and N-doped mono-metallic, bi-metallic, and tri-metallic hollow carbon sphere electrocatalysts (M−SNC) with the goal of enhancing the catalysts OER activity and shedding light on the unique roles and synergistic effects of the various metals in the FeCoNi ternary metal catalyst. Our systematic analyses demonstrated the introduction of Fe effectively reduces the overpotential, Co accelerates the kinetics of OER, and the addition of Ni further improves the OER performance. Benefiting from the synergistic effects, the FeCoNi-SNC exhibits a low overpotential of 270 mV, with no morphological or structural changes after reaction, maintaining high activity for 72 h at 10 mA cm<sup>−2</sup>. Moreover, the assembled FeCoNi-SNC || Pt/C water electrolysis device operates for 65,000 s with minimal degradation, demonstrating its potential for practical application. This work presents a synergy strategy for the preparation of low-cost and highly efficient OER catalysts and further provides insights into the rational design and preparation of multicomponent catalysts.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 976-986"},"PeriodicalIF":9.4,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-10DOI: 10.1016/j.jcis.2024.11.057
Deyan Gong , Lu Liu , Ziwen Xiao , Zhuonan Yang , Yaoyu Hu , Taikui Sheng , Yajing Liu , Zhaohua Miao , Zhengbao Zha
Nanozymes have made great achievements in the research of tumor therapy. However, due to the complex tumor microenvironment, the catalytic activity and biosafety of nanozymes are limited. High catalytic efficiency is a relentless pursuit for the preparation of high-performance nanozymes. Dimensional reduction from 3D nanoscale metal–organic frameworks (nMOFs) to 2D nanoscale metal–organic layers (nMOLs) increases the encounters frequency of nanozymes and substrate, which facilitates the diffusion of reactive oxygen species (ROS) from nMOLs, thus significantly improving the effectiveness of chemodynamic therapy. In this study, He@Ce-BTC nMOF and He@Ce-BTB nMOL based on Ce6 SBUs were synthesized by solvothermal reaction. Compared with the 3D nMOFs, the 2D nanozymes He@Ce-BTB nMOL possessed enhanced ROS catalytic efficiency, were able to be activated by the tumor acidic microenvironment with the polymerase mimetic activities (CAT, POD, GSH-OXD) that enhances the lipid peroxidation process and accelerates the process of ferroptosis thereby killing tumor cells. In addition, He@Ce-BTB does not affect normal tissue cells, thus avoiding diffusion-induced side effects. He@Ce-BTB has shown excellent therapeutic effects in vitro and in vivo, which indicates its potential for clinical application, and is expected to become a new generation of drugs for the treatment of tumors.
{"title":"pH-activated metal–organic layer nanozyme for ferroptosis tumor therapy","authors":"Deyan Gong , Lu Liu , Ziwen Xiao , Zhuonan Yang , Yaoyu Hu , Taikui Sheng , Yajing Liu , Zhaohua Miao , Zhengbao Zha","doi":"10.1016/j.jcis.2024.11.057","DOIUrl":"10.1016/j.jcis.2024.11.057","url":null,"abstract":"<div><div>Nanozymes have made great achievements in the research of tumor therapy. However, due to the complex tumor microenvironment, the catalytic activity and biosafety of nanozymes are limited. High catalytic efficiency is a relentless pursuit for the preparation of high-performance nanozymes. Dimensional reduction from 3D nanoscale metal–organic frameworks (nMOFs) to 2D nanoscale metal–organic layers (nMOLs) increases the encounters frequency of nanozymes and substrate, which facilitates the diffusion of reactive oxygen species (ROS) from nMOLs, thus significantly improving the effectiveness of chemodynamic therapy. In this study, He@Ce-BTC nMOF and He@Ce-BTB nMOL based on Ce<sub>6</sub> SBUs were synthesized by solvothermal reaction. Compared with the 3D nMOFs, the 2D nanozymes He@Ce-BTB nMOL possessed enhanced ROS catalytic efficiency, were able to be activated by the tumor acidic microenvironment with the polymerase mimetic activities (CAT, POD, GSH-OXD) that enhances the lipid peroxidation process and accelerates the process of ferroptosis thereby killing tumor cells. In addition, He@Ce-BTB does not affect normal tissue cells, thus avoiding diffusion-induced side effects. He@Ce-BTB has shown excellent therapeutic effects <em>in vitro</em> and <em>in vivo</em>, which indicates its potential for clinical application, and is expected to become a new generation of drugs for the treatment of tumors.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 937-947"},"PeriodicalIF":9.4,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-10DOI: 10.1016/j.jcis.2024.11.051
Kehui Xue , Lianqing Yu , Chong Liu , Huihua Luo , Zhe Li , Yaping Zhang , Haifeng Zhu
Charge transport and metal site stability play a critical role on realizing efficient solar water splitting in photoelectrochemical devices. Here, we investigated BiVO4-based composite photoanodes (labelled as NF@PTA/2PACz/BVO) in which BiVO4, [2-(9H-carbazol-9-yl) ethyl] phosphonic acid (2PACz) hole transport layers based on self-assembled monolayers (SAMs), and terephthalic acid (PTA)-functionalized NiFeOOH (NF@PTA) oxygen evolution cocatalysts (OECs) structurally similar to the OECs in natural photosystem II, were assembled sequentially. Alignment of energy levels and stabilization of metal sites can be achieved by this layer-designed structure. And the uncoordinated (COOH) carboxylate groups can accelerate the proton transfer. Fundamental investigations reveal that the NF@PTA/2PACz/BVO photoanode exhibits unique properties including passivated surface traps, excellent carrier density and lifetime, enlarged photovoltage, and smoother hole transport band structure. Consequently, the optimum NF@PTA/2PACz/BVO photoanode shows the photoelectrochemical (PEC) performance of 5.43 mA cm−2 at 1.23 V vs reversible hydrogen electrode with an applied bias photon-to-current efficiency of 1.45 %. The coupled COFe bond between the coordinating carboxylate and the metals not only inhibits the leaching of the metal species but also maintains a steady photocurrent density over 20 h of stability test. Our work paves the way for the development of more efficient PEC cells with superior charge separation and breakthroughs in the stability of metal active sites, thus broadening their potential applications.
在光电化学器件中，电荷传输和金属位点稳定性对实现高效太阳能水分离起着至关重要的作用。在这里，我们研究了基于 BiVO4 的复合光阳极（NF@PTA/2PACz/BVO），其中 BiVO4、[2-（9H-咔唑-9-基）乙基]膦酸（2PACz）空穴传输层基于自组装单层（SAM）、和对苯二甲酸（PTA）功能化的 NiFeOOH（NF@PTA）氧进化协同催化剂（OEC），其结构与天然光系统 II 中的 OEC 相似。这种层设计结构可实现能级对齐和金属位点稳定。非配位（COOH）羧酸基团可以加速质子转移。基础研究表明，NF@PTA/2PACz/BVO 光阳极具有独特的性能，包括钝化的表面陷阱、优异的载流子密度和寿命、更高的光电压和更平滑的空穴传输带结构。因此，最佳 NF@PTA/2PACz/BVO 光阳极在 1.23 V 电压下对可逆氢电极的光电化学（PEC）性能为 5.43 mA cm-2，外加偏压光子对电流效率为 1.45%。配位羧酸盐和金属之间的耦合 COFe 键不仅抑制了金属物种的浸出，而且在 20 小时的稳定性测试中保持了稳定的光电流密度。我们的研究工作为开发更高效的 PEC 电池铺平了道路，这种电池具有卓越的电荷分离性能，并在金属活性位点的稳定性方面取得了突破，从而拓宽了其潜在的应用领域。
{"title":"Self-assembled hole transport engineering and bio-inspired coordination/incoordination ligands synergizing strategy for productive photoelectrochemical water splitting","authors":"Kehui Xue , Lianqing Yu , Chong Liu , Huihua Luo , Zhe Li , Yaping Zhang , Haifeng Zhu","doi":"10.1016/j.jcis.2024.11.051","DOIUrl":"10.1016/j.jcis.2024.11.051","url":null,"abstract":"<div><div>Charge transport and metal site stability play a critical role on realizing efficient solar water splitting in photoelectrochemical devices. Here, we investigated BiVO<sub>4</sub>-based composite photoanodes (labelled as NF@PTA/2PACz/BVO) in which BiVO<sub>4</sub>, [2-(9H-carbazol-9-yl) ethyl] phosphonic acid (2PACz) hole transport layers based on self-assembled monolayers (SAMs), and terephthalic acid (PTA)-functionalized NiFeOOH (NF@PTA) oxygen evolution cocatalysts (OECs) structurally similar to the OECs in natural photosystem II, were assembled sequentially. Alignment of energy levels and stabilization of metal sites can be achieved by this layer-designed structure. And the uncoordinated (<img>COOH) carboxylate groups can accelerate the proton transfer. Fundamental investigations reveal that the NF@PTA/2PACz/BVO photoanode exhibits unique properties including passivated surface traps, excellent carrier density and lifetime, enlarged photovoltage, and smoother hole transport band structure. Consequently, the optimum NF@PTA/2PACz/BVO photoanode shows the photoelectrochemical (PEC) performance of 5.43 mA cm<sup>−2</sup> at 1.23 V vs reversible hydrogen electrode with an applied bias photon-to-current efficiency of 1.45 %. The coupled C<img>O<img>Fe bond between the coordinating carboxylate and the metals not only inhibits the leaching of the metal species but also maintains a steady photocurrent density over 20 h of stability test. Our work paves the way for the development of more efficient PEC cells with superior charge separation and breakthroughs in the stability of metal active sites, thus broadening their potential applications.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 771-784"},"PeriodicalIF":9.4,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142611408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rational construction of core@shell heterostructured photocatalysts is the key to realize efficient hydrogen production from water splitting attributing to the accelerated photoinduced charges separation/transfer and enhanced light absorption ability. In this work, two-dimensional (2D) ZnIn2S4 (ZIS) nanosheets were in-situ grown on phosphorus doped MnCo2O4.5 (P-MnCo2O4.5) nanospheres to construct P-MnCo2O4.5@ZIS heterostructured photocatalysts for efficient photocatalytic hydrogen production. The optimized 6 wt% P-MnCo2O4.5@ZIS composite presents remarkable photocatalytic hydrogen evolution rate of 4197 µmol g−1 h−1 (8 times of single ZIS) along with excellent cycling stability, which is comparable to most previous reported ZnIn2S4-based or even noble-metal involved catalysts. The improved photocatalytic performance is resulted from the distinguished heterostructure and components of P-MnCo2O4.5@ZIS, in which the close contact interface facilitates the separation/transfer and inhibits the recombination of charges, and the uniform distribution of ZIS nanosheets on P-MnCo2O4.5 increases the active sites and fortifies the light absorption. The present work comes up with a prospective method for establishing core@shell ZIS-based heterostructured photocatalysts for efficient hydrogen generation.
{"title":"Constructing core–shell phosphorus doped MnCo2O4.5@ZIS for efficient photocatalytic hydrogen production from water splitting","authors":"Yueru Yan, Yuanyuan Zhao, Yun Lou, Yafei Zhao, Huishan Shang, Yinze Yang, Dan Wang, Bing Zhang","doi":"10.1016/j.jcis.2024.11.052","DOIUrl":"10.1016/j.jcis.2024.11.052","url":null,"abstract":"<div><div>Rational construction of core@shell heterostructured photocatalysts is the key to realize efficient hydrogen production from water splitting attributing to the accelerated photoinduced charges separation/transfer and enhanced light absorption ability. In this work, two-dimensional (2D) ZnIn<sub>2</sub>S<sub>4</sub> (ZIS) nanosheets were in-situ grown on phosphorus doped MnCo<sub>2</sub>O<sub>4.5</sub> (P-MnCo<sub>2</sub>O<sub>4.5</sub>) nanospheres to construct P-MnCo<sub>2</sub>O<sub>4.5</sub>@ZIS heterostructured photocatalysts for efficient photocatalytic hydrogen production. The optimized 6 wt% P-MnCo<sub>2</sub>O<sub>4.5</sub>@ZIS composite presents remarkable photocatalytic hydrogen evolution rate of 4197 µmol g<sup>−1</sup> h<sup>−1</sup> (8 times of single ZIS) along with excellent cycling stability, which is comparable to most previous reported ZnIn<sub>2</sub>S<sub>4</sub>-based or even noble-metal involved catalysts. The improved photocatalytic performance is resulted from the distinguished heterostructure and components of P-MnCo<sub>2</sub>O<sub>4.5</sub>@ZIS, in which the close contact interface facilitates the separation/transfer and inhibits the recombination of charges, and the uniform distribution of ZIS nanosheets on P-MnCo<sub>2</sub>O<sub>4.5</sub> increases the active sites and fortifies the light absorption. The present work comes up with a prospective method for establishing core@shell ZIS-based heterostructured photocatalysts for efficient hydrogen generation.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 965-975"},"PeriodicalIF":9.4,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-09DOI: 10.1016/j.jcis.2024.11.037
Chengzong Zeng , Xia Shen , Kun Shen , Linzhao Bao , Guangyin Liao , Jun Shen
The liquid metal (LM) composite is regarded as having potential and wide-ranging applications in electronic thermal management. Enhancing the thermal conductivity of LM is a crucial matter. Herein, a novel LM composite of eutectic gallium-indium (EGaIn)/diamond/graphite was developed. A highest thermal conductivity of 133 ± 3 W m−1 K−1 was achieved, 411 % higher than that of the matrix. The bonding mechanism reveals that the interfacial adsorption energy () of graphite and EGaIn can be effectively decreased by the functional groups of graphite (by −108 % for –OH and −125 % for −CO) and the oxide of EGaIn (by −64 %). Furthermore, the of diamond and EGaIn can be significantly reduced through the oxidation of EGaIn (by −83 %) and the H-terminal of diamond (by −187 %). The thermal conductance mechanism suggests that a 3 vol% graphite content in the EGaIn/40 vol% diamond/graphite composite can form an excellent thermal conductance bridge among diamond particles. However, the thermal conductivity of the composite significantly decreased when too much graphite was added due to the tendency of the graphite to coat the diamond particles. There was no significant change in the melting point of EGaIn after being mixed with diamond and graphite. The EGaIn/diamond/graphite composite also demonstrated excellent thermal management performance in LED lamps and CPU heat dissipation as a thermal interface material, particularly in high-power electronic devices. This work presents the potential to enhance the thermal conductivity of LM-based composite by bridging spheroidal particles with a flaky material.
液态金属（LM）复合材料被认为在电子热管理方面具有潜在而广泛的应用。提高液态金属的热导率是一个关键问题。在此，我们开发了一种新型的共晶镓铟 (EGaIn) / 金刚石/石墨液态金属复合材料。该复合材料的最高热导率为 133 ± 3 W m-1 K-1，比基体的热导率高出 411%。键合机理表明，石墨和 EGaIn 的界面吸附能（ΔE）可通过石墨的官能团（-OH 降低 108%，-CO 降低 125%）和 EGaIn 的氧化物（-64%）有效降低。此外，金刚石和 EGaIn 的 ΔE 可以通过 EGaIn 的氧化（-83%）和金刚石的 H 端（-187%）而显著降低。热传导机制表明，在 EGaIn/40 Vol% 金刚石/石墨复合材料中，3 Vol% 的石墨含量可在金刚石颗粒之间形成极佳的热传导桥。然而，当石墨添加过多时，复合材料的热导率会明显降低，原因是石墨容易包覆金刚石颗粒。EGaIn 与金刚石和石墨混合后，其熔点没有明显变化。作为一种热界面材料，EGaIn/金刚石/石墨复合材料在 LED 灯和 CPU 散热方面也表现出优异的热管理性能，尤其是在大功率电子设备中。这项研究通过将球形颗粒与片状材料桥接，展示了提高基于 LM 的复合材料导热性能的潜力。
{"title":"Boosted the thermal conductivity of liquid metal via bridging diamond particles with graphite","authors":"Chengzong Zeng , Xia Shen , Kun Shen , Linzhao Bao , Guangyin Liao , Jun Shen","doi":"10.1016/j.jcis.2024.11.037","DOIUrl":"10.1016/j.jcis.2024.11.037","url":null,"abstract":"<div><div>The liquid metal (LM) composite is regarded as having potential and wide-ranging applications in electronic thermal management. Enhancing the thermal conductivity of LM is a crucial matter. Herein, a novel LM composite of eutectic gallium-indium (EGaIn)/diamond/graphite was developed. A highest thermal conductivity of 133 ± 3 W m<sup>−1</sup> K<sup>−1</sup> was achieved, 411 % higher than that of the matrix. The bonding mechanism reveals that the interfacial adsorption energy (<span><math><mrow><mi>Δ</mi><mi>E</mi></mrow></math></span>) of graphite and EGaIn can be effectively decreased by the functional groups of graphite (by −108 % for –OH and −125 % for −C<img>O) and the oxide of EGaIn (by −64 %). Furthermore, the <span><math><mrow><mi>Δ</mi><mi>E</mi></mrow></math></span> of diamond and EGaIn can be significantly reduced through the oxidation of EGaIn (by −83 %) and the H-terminal of diamond (by −187 %). The thermal conductance mechanism suggests that a 3 vol% graphite content in the EGaIn/40 vol% diamond/graphite composite can form an excellent thermal conductance bridge among diamond particles. However, the thermal conductivity of the composite significantly decreased when too much graphite was added due to the tendency of the graphite to coat the diamond particles. There was no significant change in the melting point of EGaIn after being mixed with diamond and graphite. The EGaIn/diamond/graphite composite also demonstrated excellent thermal management performance in LED lamps and CPU heat dissipation as a thermal interface material, particularly in high-power electronic devices. This work presents the potential to enhance the thermal conductivity of LM-based composite by bridging spheroidal particles with a flaky material.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 643-656"},"PeriodicalIF":9.4,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142611308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-09DOI: 10.1016/j.jcis.2024.11.041
Xiaofeng Pan , Jian Guan , Shilin Cao , Xiaojuan Ma , Yonghao Ni , Qinhua Wang
To meet the stringent requirements of wearable and flexible electronics for functionality and comfort, it is urgent to develop green conductive, self-adhesive, and stretchable functional hydrogels. The chelates of transition metal ions and lignosulfonate sodium (LS) can impart multi-functionality to the hydrogel and significantly improve the hydrogel’s gelation speed. However, the presence of metal ions may weaken the adhesiveness of hydrogels by shielding the functional adhesive groups. Here, an oxidative metal ions-free lignin-catalyzed multifunctional polyacrylic acid (PAA) hydrogel is proposed. LS itself can undergo a redox reaction with the initiator to generate many free radicals, thereby catalyzing the rapid polymerization of polymer monomers at room temperature and subsequent gelation. Furthermore, LS can easily improve the hydrogels’ softness (compressive modulus: ∼7 kPa) and stretchability (maximum ∼2700 %). Interestingly, LS can simultaneously promote the hydrogel’s conductivity, adhesion, and UV blocking. Notably, the hydrogel integrating these advantageous features is suitable as non-invasive electronics in the human epidermis. We explored its ability to act as adhesive bioelectrodes to collect electrooculographic signals in patients with physical and language impairments. Bioelectrodes can recognize the patient’s eye movements. The displayed electrical signal can be output in 6 languages after being encoded. This provides a valuable case for LS-doped functional hydrogels in the medical field.
为满足可穿戴和柔性电子产品对功能性和舒适性的严格要求，迫切需要开发绿色导电、自粘性和可拉伸的功能性水凝胶。过渡金属离子螯合物和木质素磺酸钠（LS）可赋予水凝胶多功能性，并显著提高水凝胶的凝胶速度。然而，金属离子的存在可能会屏蔽功能性粘合基团，从而削弱水凝胶的粘合性。本文提出了一种不含氧化金属离子的木质素催化多功能聚丙烯酸（PAA）水凝胶。LS 本身可与引发剂发生氧化还原反应，生成许多自由基，从而催化聚合物单体在室温下快速聚合并随后凝胶化。此外，LS 还能轻松提高水凝胶的柔软度（压缩模量：∼7 kPa）和伸展性（最大值∼2700 %）。有趣的是，LS 还能同时提高水凝胶的导电性、粘附性和紫外线阻隔性。值得注意的是，集成了这些优势特性的水凝胶适合用作人体表皮的非侵入性电子器件。我们探索了水凝胶作为粘合生物电极的能力，以收集有身体和语言障碍的患者的脑电图信号。生物电极可以识别患者的眼球运动。显示的电信号经编码后可输出 6 种语言。这为掺杂 LS 的功能性水凝胶在医疗领域的应用提供了有价值的案例。
{"title":"An oxidative metal ions-free lignin-catalyzed multifunctional hydrogel bioelectronics for codable eye communication","authors":"Xiaofeng Pan , Jian Guan , Shilin Cao , Xiaojuan Ma , Yonghao Ni , Qinhua Wang","doi":"10.1016/j.jcis.2024.11.041","DOIUrl":"10.1016/j.jcis.2024.11.041","url":null,"abstract":"<div><div>To meet the stringent requirements of wearable and flexible electronics for functionality and comfort, it is urgent to develop green conductive, self-adhesive, and stretchable functional hydrogels. The chelates of transition metal ions and lignosulfonate sodium (LS) can impart multi-functionality to the hydrogel and significantly improve the hydrogel’s gelation speed. However, the presence of metal ions may weaken the adhesiveness of hydrogels by shielding the functional adhesive groups. Here, an oxidative metal ions-free lignin-catalyzed multifunctional polyacrylic acid (PAA) hydrogel is proposed. LS itself can undergo a redox reaction with the initiator to generate many free radicals, thereby catalyzing the rapid polymerization of polymer monomers at room temperature and subsequent gelation. Furthermore, LS can easily improve the hydrogels’ softness (compressive modulus: ∼7 kPa) and stretchability (maximum ∼2700 %). Interestingly, LS can simultaneously promote the hydrogel’s conductivity, adhesion, and UV blocking. Notably, the hydrogel integrating these advantageous features is suitable as non-invasive electronics in the human epidermis. We explored its ability to act as adhesive bioelectrodes to collect electrooculographic signals in patients with physical and language impairments. Bioelectrodes can recognize the patient’s eye movements. The displayed electrical signal can be output in 6 languages after being encoded. This provides a valuable case for LS-doped functional hydrogels in the medical field.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 753-761"},"PeriodicalIF":9.4,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142611298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-09DOI: 10.1016/j.jcis.2024.11.038
Muhammad Arif , Ayaz Mahsud , Haoran Xing , Abdul Hannan Zahid , Qian Liang , Muhammad Amjad Majeed , Amjad Ali , Xiazhang Li , Zhansheng Lu , Francis Leonard Deepak , Tahir Muhmood , Yinjuan Chen
The catalytic efficiency of heterogeneous photocatalytic CO2 reduction and photo-Fenton H2O2 activation is closely related to the local electron density of reaction center atoms. However, electron-hole recombination from random charge transfer significantly restricts the targeted electron delivery to the active center. Herein, Fe-C3N4/MoO3 heterojunction with interfacial coordination of atomically dispersed Fe-N4 sites with the O interface of MoO3 was synthesized by simple hydrothermal method. Based on the experimental results and density functional theory calculation (DFT), the heterojunction structure fosters accelerated interfacial electron transfer due to directional interfacial electric field (IEF) between Fe-CN and MoO heterogeneous interfaces, and the interfacial bond between Fe-N4 sites and O at the built-in interface regulates the local electron density of Fe-N4 active center. DFT further reveals that the interfacial electron flow and concentrated electron density at Fe-N4 sites result from the coordination between Fe-N4 and MoO3 interfaces. This directs electron flow towards the Fe center, significantly enhancing CO2 adsorption and H2O2 conversion efficiency. PDOS analysis shows that the dyz and dz2 orbitals of the isolated Fe atom in Fe-CN overlap with the pz orbital of the O atom in MoO3, playing a pivotal role in CO2 adsorption. Consequently, the Fe-CN/MoO3 heterojunction demonstrated highly efficient photocatalytic CO2 reduction to CH4, coupled with benzyl alcohol oxidation and photo-Fenton tetracycline degradation. These findings offer a promising multifunctional catalyst strategy for the development of energy conversion and environmental remediation.
异相光催化二氧化碳还原和光-芬顿 H2O2 活化的催化效率与反应中心原子的局部电子密度密切相关。然而，随机电荷转移产生的电子-空穴重组极大地限制了电子向活性中心的定向输送。本文采用简单的水热法合成了Fe-C3N4/MoO3异质结，其原子分散的Fe-N4位点与MoO3的O界面相互配位。根据实验结果和密度泛函理论（DFT）计算，异质结结构促进了Fe-CN和MoO异质界面之间的定向界面电场（IEF）所导致的加速界面电子转移，而Fe-N4位点与内置界面上的O之间的界面键调节了Fe-N4活性中心的局部电子密度。DFT 进一步揭示，Fe-N4 位点上的界面电子流和集中的电子密度来自于 Fe-N4 和 MoO3 界面之间的配位。这引导电子流向 Fe 中心，显著提高了 CO2 吸附和 H2O2 转化效率。PDOS 分析表明，Fe-CN 中孤立的 Fe 原子的 dyz 和 dz2 轨道与 MoO3 中 O 原子的 pz 轨道重叠，在吸附 CO2 的过程中起着关键作用。因此，Fe-CN/MoO3 异质结表现出了高效的光催化 CO2 还原成 CH4 的能力，同时还具有苯甲醇氧化和光 Fenton 降解四环素的能力。这些发现为开发能源转换和环境修复提供了一种前景广阔的多功能催化剂策略。
{"title":"Modulating the local electron density at built-in interface iron single sites in Fe-CN/MoO3 heterostructure for enhanced CO2 reduction to CH4 and photo-Fenton reaction","authors":"Muhammad Arif , Ayaz Mahsud , Haoran Xing , Abdul Hannan Zahid , Qian Liang , Muhammad Amjad Majeed , Amjad Ali , Xiazhang Li , Zhansheng Lu , Francis Leonard Deepak , Tahir Muhmood , Yinjuan Chen","doi":"10.1016/j.jcis.2024.11.038","DOIUrl":"10.1016/j.jcis.2024.11.038","url":null,"abstract":"<div><div>The catalytic efficiency of heterogeneous photocatalytic CO<sub>2</sub> reduction and photo-Fenton H<sub>2</sub>O<sub>2</sub> activation<!--> <!-->is<!--> <!-->closely related to the local electron density of reaction center atoms. However, electron-hole recombination from random charge transfer significantly restricts the targeted electron delivery to the active center. Herein, Fe-C<sub>3</sub>N<sub>4</sub>/MoO<sub>3</sub> heterojunction with interfacial coordination of atomically dispersed Fe-N<sub>4</sub> sites with the O interface of MoO<sub>3</sub> was synthesized by simple hydrothermal method. Based on the experimental results and density functional theory calculation (DFT), the heterojunction structure fosters accelerated interfacial electron transfer due to directional interfacial electric field (IEF) between Fe-CN and MoO heterogeneous interfaces, and the interfacial bond between Fe-N<sub>4</sub> sites and O at the built-in interface regulates the local electron density of Fe-N<sub>4</sub> active center. DFT further reveals that the interfacial electron flow and concentrated electron density at Fe-N<sub>4</sub> sites result from the coordination between Fe-N<sub>4</sub> and MoO<sub>3</sub> interfaces. This directs electron flow towards the Fe center, significantly enhancing CO<sub>2</sub> adsorption and H<sub>2</sub>O<sub>2</sub> conversion efficiency. PDOS analysis shows that the <em>d</em><sub>yz</sub> and <em>d</em><sub>z</sub><sup>2</sup> orbitals of the isolated Fe atom in Fe-CN overlap with the <em>p</em><sub>z</sub> orbital of the O atom in MoO<sub>3</sub>, playing a pivotal role in CO<sub>2</sub> adsorption. Consequently, the Fe-CN/MoO<sub>3</sub> heterojunction demonstrated highly efficient photocatalytic CO<sub>2</sub> reduction to CH<sub>4</sub>, coupled with benzyl alcohol oxidation and photo-Fenton tetracycline degradation. These findings offer a promising multifunctional catalyst strategy for the development of energy conversion and environmental remediation.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 1053-1066"},"PeriodicalIF":9.4,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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