Pub Date : 2024-09-09DOI: 10.1016/j.mtchem.2024.102296
Amna Shafique, Ramsha Saleem, Rana Rashad Mahmood Khan, Zohaib Saeed, Muhammad Pervaiz, Maira Liaqat, Tousif Hussain, Muhammad Summer, Shahzad Sharif
CO is a greenhouse gas that contributes to global warming, ocean acidification, and acid rain. Capturing CO and converting it into value-added chemicals and fuels could reduce atmospheric CO levels. A promising CO conversion route is the cycloaddition (CA) reaction with epoxides to produce cyclic carbonates, which have commercial applications. Metal-organic frameworks (MOFs) show promise as CO-epoxide CA catalysts due to features like high surface area, porosity for mass transfer, and tunable acidic/basic sites. MOFs with dual Lewis acid/base sites act as bifunctional CA catalysts by activating the epoxide and inserting CO. The typical Lewis acid sites can act as OMSs (Open metal sites) that have the ability to adsorb and activate the reactant molecules, making it easy to promote charge transfer during the conversion of reactant into products.
二氧化碳是一种温室气体，会导致全球变暖、海洋酸化和酸雨。捕获一氧化碳并将其转化为高附加值的化学品和燃料，可以降低大气中的一氧化碳含量。一种很有前景的二氧化碳转化途径是与环氧化物发生环加成（CA）反应，生成具有商业应用价值的环碳酸盐。金属有机框架（MOF）具有高表面积、多孔性传质和可调酸碱位点等特点，因此有望成为一氧化碳环氧化物 CA 催化剂。具有路易斯酸/碱双重位点的 MOF 可通过活化环氧化物和插入 CO 来充当双功能 CA 催化剂。典型的路易斯酸位点可作为开放金属位点（OMS），具有吸附和活化反应物分子的能力，从而在反应物转化为产物的过程中易于促进电荷转移。
{"title":"Metal-organic frameworks as heterogeneous catalysts for CO2 cycloaddition: A promising strategy for CO2 mitigation and utilization","authors":"Amna Shafique, Ramsha Saleem, Rana Rashad Mahmood Khan, Zohaib Saeed, Muhammad Pervaiz, Maira Liaqat, Tousif Hussain, Muhammad Summer, Shahzad Sharif","doi":"10.1016/j.mtchem.2024.102296","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102296","url":null,"abstract":"CO is a greenhouse gas that contributes to global warming, ocean acidification, and acid rain. Capturing CO and converting it into value-added chemicals and fuels could reduce atmospheric CO levels. A promising CO conversion route is the cycloaddition (CA) reaction with epoxides to produce cyclic carbonates, which have commercial applications. Metal-organic frameworks (MOFs) show promise as CO-epoxide CA catalysts due to features like high surface area, porosity for mass transfer, and tunable acidic/basic sites. MOFs with dual Lewis acid/base sites act as bifunctional CA catalysts by activating the epoxide and inserting CO. The typical Lewis acid sites can act as OMSs (Open metal sites) that have the ability to adsorb and activate the reactant molecules, making it easy to promote charge transfer during the conversion of reactant into products.","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"13 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-08DOI: 10.1016/j.mtchem.2024.102290
Qing Wu, Sha Ding, Aokui Sun, Yong Xia
Recently, with the response to national environmental protection initiatives, the development of clean energy has become a hot topic. Organic solar cells, as an emerging clean energy technology, have received widespread favor from researchers due to their advantages such as flexibility, light weight, solution processability, and easy regulation, and have made breakthrough progress. Non-fullerene acceptor materials, as a key component of organic solar cells, have attracted widespread attention in recent years. At present, the power conversion efficiency of organic solar cells based on Y-series fused-ring non-fullerene acceptor materials has exceeded 20 %. According to different structural types of non-fullerene acceptor molecules, this article reviews the research progress of non-fullerene acceptor molecules and their photoelectric properties in recent years from various aspects such as core skeleton engineering, side chain engineering, and end group modification, and prospects the future research directions and application prospects of non-fullerene acceptors.
近来，随着国家环保举措的响应，清洁能源的发展成为热门话题。有机太阳能电池作为一种新兴的清洁能源技术，以其柔性、轻质、可溶液加工、易调节等优点受到研究人员的广泛青睐，并取得了突破性进展。非富勒烯受体材料作为有机太阳能电池的关键组成部分，近年来受到广泛关注。目前，基于 Y 系列熔环非富勒烯受体材料的有机太阳能电池的功率转换效率已超过 20%。本文根据非富勒烯受体分子的不同结构类型，从核心骨架工程、侧链工程、端基修饰等多个方面回顾了近年来非富勒烯受体分子及其光电性能的研究进展，并展望了非富勒烯受体的未来研究方向和应用前景。
{"title":"Recent progress on non-fullerene acceptor materials for organic solar cells","authors":"Qing Wu, Sha Ding, Aokui Sun, Yong Xia","doi":"10.1016/j.mtchem.2024.102290","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102290","url":null,"abstract":"Recently, with the response to national environmental protection initiatives, the development of clean energy has become a hot topic. Organic solar cells, as an emerging clean energy technology, have received widespread favor from researchers due to their advantages such as flexibility, light weight, solution processability, and easy regulation, and have made breakthrough progress. Non-fullerene acceptor materials, as a key component of organic solar cells, have attracted widespread attention in recent years. At present, the power conversion efficiency of organic solar cells based on Y-series fused-ring non-fullerene acceptor materials has exceeded 20 %. According to different structural types of non-fullerene acceptor molecules, this article reviews the research progress of non-fullerene acceptor molecules and their photoelectric properties in recent years from various aspects such as core skeleton engineering, side chain engineering, and end group modification, and prospects the future research directions and application prospects of non-fullerene acceptors.","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"47 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
It is challenging and still difficult to adjust and boost the catalytic performance of photocatalysts via the synergistic achievement of heteroatom doping, vacancies engineering, morphology regulation, and appropriate structural design. Herein, we developed an efficient method to synthesize 3D hierarchical porous BiOI–BiS S-scheme heterojunction with oxygen vacancies (Ov-BBS) induced by sulfur doping and systematically investigated regulation of oxygen vacancies by sulfur doping and their effects on photocatalytic performance. Results showed that sulfur species promoted the formation of S-scheme heterojunction but depleted oxygen vacancies in Ov-BiOI. The optimal sulfur doped catalyst (Ov-BBS-0.1) exhibited excellent UV–vis light photocatalytic activity towards four representative pollutants, affording removal rate of 97.1 % for MB, 97.6 % for RhB, 99.4 % for Cr(VI), and 92.0 % for TC, respectively, which were higher than those of pristine BiS, BiOI, Ov-BiOI, Ov-BiOI/BiS mixture, Ov-BBS-0.05, and Ov-BBS-0.2. Deep characterizations and theoretical studies certified that the four-pronged enhancement strategy of 3D hierarchical porous structure, oxygen vacancies, sulfur doping and the constructed S-scheme heterojunction, not only enriched accessible active sites, but also promoted electronic polarization and modulated electronic structure, resulting in rapid separation and migration of photogenerated carriers. Moreover, considering the excellent stability and cyclic photocatalytic performance, the film prepared by pumping Ov-BBS dispersion was also satisfactory in the practical application of circulating sewage treatment. Overall, the present work provides a novel approach for the design of more photocatalysts with high efficiency.
{"title":"Sulfur doping induced 3D hierarchical porous BiOI–Bi2S3 S-scheme heterojunction with regulated oxygen vacancies for a four-pronged enhanced photocatalytic degradation towards four representative pollutants","authors":"Xiangdong Shi, Xiaoyun Qin, Xuanyu Yang, Xiangyu Wei, Ying Liu, Sihui Li, Guixia Liu, Jinxian Wang, Xiangting Dong, Fenghua Chen","doi":"10.1016/j.mtchem.2024.102283","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102283","url":null,"abstract":"It is challenging and still difficult to adjust and boost the catalytic performance of photocatalysts via the synergistic achievement of heteroatom doping, vacancies engineering, morphology regulation, and appropriate structural design. Herein, we developed an efficient method to synthesize 3D hierarchical porous BiOI–BiS S-scheme heterojunction with oxygen vacancies (Ov-BBS) induced by sulfur doping and systematically investigated regulation of oxygen vacancies by sulfur doping and their effects on photocatalytic performance. Results showed that sulfur species promoted the formation of S-scheme heterojunction but depleted oxygen vacancies in Ov-BiOI. The optimal sulfur doped catalyst (Ov-BBS-0.1) exhibited excellent UV–vis light photocatalytic activity towards four representative pollutants, affording removal rate of 97.1 % for MB, 97.6 % for RhB, 99.4 % for Cr(VI), and 92.0 % for TC, respectively, which were higher than those of pristine BiS, BiOI, Ov-BiOI, Ov-BiOI/BiS mixture, Ov-BBS-0.05, and Ov-BBS-0.2. Deep characterizations and theoretical studies certified that the four-pronged enhancement strategy of 3D hierarchical porous structure, oxygen vacancies, sulfur doping and the constructed S-scheme heterojunction, not only enriched accessible active sites, but also promoted electronic polarization and modulated electronic structure, resulting in rapid separation and migration of photogenerated carriers. Moreover, considering the excellent stability and cyclic photocatalytic performance, the film prepared by pumping Ov-BBS dispersion was also satisfactory in the practical application of circulating sewage treatment. Overall, the present work provides a novel approach for the design of more photocatalysts with high efficiency.","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"13 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
As a barrier between the structure of the human body's internal organs and the outside environment, the skin serves crucial physiological tasks like protection, regulation, and metabolism. The skin's close interaction with the outside makes it particularly vulnerable to many injuries. Bacterial infections cause wound healing to take longer, raise the risk of chronic harm, and serve as a breeding ground for drug-resistant bacteria. As a result, it is critical to eliminate bacterial species from the wound region rapidly and efficiently. Metal-organic frameworks (MOFs), are critically adjustable hybrid materials that integrate organic ligands with coordination metals to generate a range of topologically isomorphic structures. MOFs' creation and shape are investigated by the metal source and ligand utilized in the reaction process, and the structural benefits of this near-infinite combination of structures allow boundless potential for their surface functionalization. MOF has a large effective surface area, tunable structure, adaptability, excellent biodegradability, high drug load, adjustable release of drugs, robust targeting, etc. It can be loaded with therapeutic materials and has programmability. It is more conducive to treating complex wounds while realizing the synergistic effects of antibacterial, anti-inflammatory, and pro-angiogenesis, effectively improving treatment safety. This review summarizes the most recent research advances on various MOFs for antimicrobial therapy, using diverse types of metal-ion-based MOFs as an entry point. Finally, it covers several important challenges in the antimicrobial treatment of metal-ion-based MOFs.
{"title":"Biomedical Metal–Organic framework materials on antimicrobial therapy: Perspectives and challenges","authors":"Wenbin Hu, Qin Ouyang, Chenyi Jiang, Sida Huang, Nezamzadeh-Ejhieh Alireza, Dekang Guo, Jianqiang Liu, Yanqiong Peng","doi":"10.1016/j.mtchem.2024.102300","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102300","url":null,"abstract":"As a barrier between the structure of the human body's internal organs and the outside environment, the skin serves crucial physiological tasks like protection, regulation, and metabolism. The skin's close interaction with the outside makes it particularly vulnerable to many injuries. Bacterial infections cause wound healing to take longer, raise the risk of chronic harm, and serve as a breeding ground for drug-resistant bacteria. As a result, it is critical to eliminate bacterial species from the wound region rapidly and efficiently. Metal-organic frameworks (MOFs), are critically adjustable hybrid materials that integrate organic ligands with coordination metals to generate a range of topologically isomorphic structures. MOFs' creation and shape are investigated by the metal source and ligand utilized in the reaction process, and the structural benefits of this near-infinite combination of structures allow boundless potential for their surface functionalization. MOF has a large effective surface area, tunable structure, adaptability, excellent biodegradability, high drug load, adjustable release of drugs, robust targeting, etc. It can be loaded with therapeutic materials and has programmability. It is more conducive to treating complex wounds while realizing the synergistic effects of antibacterial, anti-inflammatory, and pro-angiogenesis, effectively improving treatment safety. This review summarizes the most recent research advances on various MOFs for antimicrobial therapy, using diverse types of metal-ion-based MOFs as an entry point. Finally, it covers several important challenges in the antimicrobial treatment of metal-ion-based MOFs.","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"214 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Molecular diffusion and surface dynamics within two covalent organic frameworks (COFs) have been investigated using nuclear magnetic resonance (NMR) pulsed-field gradient (PFG) and relaxation. The effect of chemical functionalities of the COFs on the effective self-diffusivity of the probe molecules within the pore space and the adsorbate/adsorbent interactions were investigated. In particular, diffusion and interaction of water, methanol, -octane, and 1,3,5-triisopropylbenzene (1,3,5-TIPB) within COF–SIOC and COF-DHTA were assessed. The two types of COFs used in this study possessed a dual pore Kagome structure consisting of larger hexagonal and smaller triangular pores. The PFG NMR results show the presence of two distinct diffusion coefficients for small probe molecules, such as water, methanol, and -octane. This behaviour is attributed to their relatively smaller kinetic diameters, allowing them to access both smaller and larger pores in the COFs. In contrast, the PFG diffusion plot for 1,3,5-TIPB showed a single component linear behaviour, which is attributed to diffusion through the larger hexagonal pores only, as a result of a much larger kinetic diameter of 1,3,5-TIPB compared to the other probe molecules, which prevents access to the smaller triangular pores. The presence of functional groups affects surface interactions between the probe molecules and the surface of the COFs. The NMR / relaxation measurements reveal a higher strength of surface interaction for water molecules in COF-DHTA compared to COF–SIOC, which is attributed to the presence of hydrophilic –OH groups in COF-DHTA. Conversely, a higher strength of surface interactions was achieved for -octane in COF–SIOC, due to the hydrophobic nature of this material. This work reports new insights into transport and dynamics of molecules confined in COFs, which can help design and optimisation of such pore structures in applications such as separation and catalysis.
{"title":"Diffusion and adsorption in covalent organic frameworks (COFs) probed by nuclear magnetic resonance methods","authors":"Shamma Alhashmi, Shu-Yan Jiang, Aristarchos Mavridis, Rahul Raveendran Nair, Xin Zhao, Carmine D'Agostino","doi":"10.1016/j.mtchem.2024.102245","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102245","url":null,"abstract":"Molecular diffusion and surface dynamics within two covalent organic frameworks (COFs) have been investigated using nuclear magnetic resonance (NMR) pulsed-field gradient (PFG) and relaxation. The effect of chemical functionalities of the COFs on the effective self-diffusivity of the probe molecules within the pore space and the adsorbate/adsorbent interactions were investigated. In particular, diffusion and interaction of water, methanol, -octane, and 1,3,5-triisopropylbenzene (1,3,5-TIPB) within COF–SIOC and COF-DHTA were assessed. The two types of COFs used in this study possessed a dual pore Kagome structure consisting of larger hexagonal and smaller triangular pores. The PFG NMR results show the presence of two distinct diffusion coefficients for small probe molecules, such as water, methanol, and -octane. This behaviour is attributed to their relatively smaller kinetic diameters, allowing them to access both smaller and larger pores in the COFs. In contrast, the PFG diffusion plot for 1,3,5-TIPB showed a single component linear behaviour, which is attributed to diffusion through the larger hexagonal pores only, as a result of a much larger kinetic diameter of 1,3,5-TIPB compared to the other probe molecules, which prevents access to the smaller triangular pores. The presence of functional groups affects surface interactions between the probe molecules and the surface of the COFs. The NMR / relaxation measurements reveal a higher strength of surface interaction for water molecules in COF-DHTA compared to COF–SIOC, which is attributed to the presence of hydrophilic –OH groups in COF-DHTA. Conversely, a higher strength of surface interactions was achieved for -octane in COF–SIOC, due to the hydrophobic nature of this material. This work reports new insights into transport and dynamics of molecules confined in COFs, which can help design and optimisation of such pore structures in applications such as separation and catalysis.","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"12 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-07DOI: 10.1016/j.mtchem.2024.102299
Mohammed G. Kotp, Shiao-Wei Kuo
Solar energy plays a pivotal role in sustainable development and is increasingly fundamental to modern human life. In the realm of sustainable energy resources, porous polymeric materials have emerged as promising alternatives to traditional inorganic materials for photocatalysis. These materials offer unique advantages such as tailored structural designs, high surface areas, diverse monomer compositions, and distinct optoelectronic properties, enhancing their efficiency in harnessing solar energy for catalytic applications.
{"title":"Harnessing solar energy with porous organic polymers: Advancements, challenges, economic, environmental impacts and future prospects in sustainable photocatalysis","authors":"Mohammed G. Kotp, Shiao-Wei Kuo","doi":"10.1016/j.mtchem.2024.102299","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102299","url":null,"abstract":"Solar energy plays a pivotal role in sustainable development and is increasingly fundamental to modern human life. In the realm of sustainable energy resources, porous polymeric materials have emerged as promising alternatives to traditional inorganic materials for photocatalysis. These materials offer unique advantages such as tailored structural designs, high surface areas, diverse monomer compositions, and distinct optoelectronic properties, enhancing their efficiency in harnessing solar energy for catalytic applications.","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"26 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-06DOI: 10.1016/j.mtchem.2024.102293
Haoran Lai, Xuejuan Ma, Penghui Shang, Xi Chen, Yaqin Wang, Jiyang Li, Zhen Ge
To enhance the functionality of all-solid-state fiber-shaped electrode, high mass loading and well infiltration of gel electrolytes should be carefully addressed. Here, electrospinning glycerol-modified polyacrylonitrile (PAN) nanofibers (GPN) are attached to Ti wire as porous high mass loading fiber shaped aerogel like substrate, and Polyaniline:poly(styrenesulfonate)-carbon (PANI:PSS-carbon) ink is selected as active materials dispersion. PANI:PSS-carbon easily infiltrates into GPN@Ti and supports a hollow fiber-shaped electrode with micropores structure through a combination of dip-coating and freeze-drying processes. Thank to high mass loading pseudo-capacitive materials and well infiltrate channel for gel-electrolyte, the resulted PANI:PSS-carbon@GPN@Ti electrode shows a high specific length capacitance of 553.9 mF cm (2637.6 mF cm) in an all-solid-state fiber-shaped supercapacitor device, outperforming the majority of previously reported fiber-shaped electrodes. These features suggest promising potential for utilizing PANI:PSS-carbon@GPN@Ti electrode in solid-state energy storage devices. In addition, this simple strategy gives a new view for constructing high performance gel-electrolyte-friendly flexible electronic electrode.
{"title":"Building polyaniline:poly(styrenesulfonate)-carbon multifunctional skeleton on aerogel like substrate for high performance gel-electrolyte-friendly fiber-shaped hollow porous electrode","authors":"Haoran Lai, Xuejuan Ma, Penghui Shang, Xi Chen, Yaqin Wang, Jiyang Li, Zhen Ge","doi":"10.1016/j.mtchem.2024.102293","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102293","url":null,"abstract":"To enhance the functionality of all-solid-state fiber-shaped electrode, high mass loading and well infiltration of gel electrolytes should be carefully addressed. Here, electrospinning glycerol-modified polyacrylonitrile (PAN) nanofibers (GPN) are attached to Ti wire as porous high mass loading fiber shaped aerogel like substrate, and Polyaniline:poly(styrenesulfonate)-carbon (PANI:PSS-carbon) ink is selected as active materials dispersion. PANI:PSS-carbon easily infiltrates into GPN@Ti and supports a hollow fiber-shaped electrode with micropores structure through a combination of dip-coating and freeze-drying processes. Thank to high mass loading pseudo-capacitive materials and well infiltrate channel for gel-electrolyte, the resulted PANI:PSS-carbon@GPN@Ti electrode shows a high specific length capacitance of 553.9 mF cm (2637.6 mF cm) in an all-solid-state fiber-shaped supercapacitor device, outperforming the majority of previously reported fiber-shaped electrodes. These features suggest promising potential for utilizing PANI:PSS-carbon@GPN@Ti electrode in solid-state energy storage devices. In addition, this simple strategy gives a new view for constructing high performance gel-electrolyte-friendly flexible electronic electrode.","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"18 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The nickel-cobalt layered double hydroxide (NiCo-LDH) with high theoretical capacitance has great application potential as supercapacitor (SC) electrodes. Nevertheless, poor conductivity, low stability, and aggregation propensity have been considered as its major drawbacks. In this study, we have successfully constructed the amorphous/crystalline NiCo-LDH@CoP@NiCo–P heterogeneous interface composites by introducing two phosphate shells to improve the electrochemical properties. The combination of NiCo–P's high rate performance with the high capacitive performance provided by the CoP coating addresses the issue of insufficient conductivity of the original NiCo-LDH, resulting in composite electrodes with excellent electrochemical performance. At the current density of 1 A g, the specific capacitance is 1652.8 F g, and the rate performance is 70.8 % when the current increases to 20 times. The capacitance retention is 87.5 % after 5000 cycles at 30 A g. The asymmetric supercapacitor prepared with AC as the anode electrode shows a high specific capacitance of 118 F g in the water-based electrolyte system, with a capacitance retention of 60.1 % after 10,000 cycles at 10 A g. Furthermore, at a power density of 800 W kg, it exhibites a maximum energy density of 42 Wh kg. This study has demonstrated the enormous potential of interface design of heterostructures for supercapacitors.
镍钴层状双氢氧化物（NiCo-LDH）具有很高的理论电容，作为超级电容器（SC）电极具有很大的应用潜力。然而，导电性差、稳定性低和易聚集一直被认为是其主要缺点。在本研究中，我们通过引入两个磷酸盐壳，成功构建了非晶/晶态 NiCo-LDH@CoP@NiCo-P异质界面复合材料，以改善其电化学性能。NiCo-P 的高速率性能与 CoP 涂层提供的高电容性能相结合，解决了原始 NiCo-LDH 电导率不足的问题，使复合电极具有优异的电化学性能。在电流密度为 1 A g 时，比电容为 1652.8 F g，当电流增加到 20 倍时，速率性能为 70.8%。以交流电为阳极电极制备的不对称超级电容器在水基电解质体系中显示出 118 F g 的高比电容，在 10 A g 下循环 10,000 次后电容保持率为 60.1%，此外，在功率密度为 800 W kg 时，其最大能量密度为 42 Wh kg。这项研究证明了超级电容器异质结构界面设计的巨大潜力。
{"title":"Interface engineering boosting the capacitive performance by constructing amorphous/crystalline NiCo-LDH@CoP@NiCo–P heterostructure","authors":"Panpan Li, Xiaoliang Wang, Shaobin Yang, Kaibin Chu, Honglei Zhang, Dechao Chen, Qin Li","doi":"10.1016/j.mtchem.2024.102274","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102274","url":null,"abstract":"The nickel-cobalt layered double hydroxide (NiCo-LDH) with high theoretical capacitance has great application potential as supercapacitor (SC) electrodes. Nevertheless, poor conductivity, low stability, and aggregation propensity have been considered as its major drawbacks. In this study, we have successfully constructed the amorphous/crystalline NiCo-LDH@CoP@NiCo–P heterogeneous interface composites by introducing two phosphate shells to improve the electrochemical properties. The combination of NiCo–P's high rate performance with the high capacitive performance provided by the CoP coating addresses the issue of insufficient conductivity of the original NiCo-LDH, resulting in composite electrodes with excellent electrochemical performance. At the current density of 1 A g, the specific capacitance is 1652.8 F g, and the rate performance is 70.8 % when the current increases to 20 times. The capacitance retention is 87.5 % after 5000 cycles at 30 A g. The asymmetric supercapacitor prepared with AC as the anode electrode shows a high specific capacitance of 118 F g in the water-based electrolyte system, with a capacitance retention of 60.1 % after 10,000 cycles at 10 A g. Furthermore, at a power density of 800 W kg, it exhibites a maximum energy density of 42 Wh kg. This study has demonstrated the enormous potential of interface design of heterostructures for supercapacitors.","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"8 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-06DOI: 10.1016/j.mtchem.2024.102264
Feng Wang, Delano P. Chong
Sustainable aviation fuel (SAF, eFuel), predominantly composed of polycyclo-hydrocarbons, is a promising alternative to conventional fossil jet fuels. It offers cleaner options for achieving immediate carbon neutrality. This study focuses on norbornyl derivatives containing seven carbon atoms (CH), including norbornadiene (NBD), quadricyclane (QC), norbornene (NBN), [2.2.1]propellane (PPL), and norbornane (NBA). These compounds are components of high energy density (HED) fuels or precursor molecules. Understanding their chemical electronic structures reveals how energy is stored in HED compounds. The carbon nuclear magnetic resonance (C NMR) chemical shifts and C1s core electron binding energy (CEBE) properties were calculated using density functional theory (DFT). The results suggest that saturated C–C single σ-bonds and strained polycycloalkane structures are the primary energy storage mechanisms for these hydrocarbons. This study provides valuable theoretical insights for the development of sustainable HED aviation fuel (eFuel).
{"title":"Polycycloalkanes at the Helm: Exploring high energy density eFuel with norbornyl derivatives","authors":"Feng Wang, Delano P. Chong","doi":"10.1016/j.mtchem.2024.102264","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102264","url":null,"abstract":"Sustainable aviation fuel (SAF, eFuel), predominantly composed of polycyclo-hydrocarbons, is a promising alternative to conventional fossil jet fuels. It offers cleaner options for achieving immediate carbon neutrality. This study focuses on norbornyl derivatives containing seven carbon atoms (CH), including norbornadiene (NBD), quadricyclane (QC), norbornene (NBN), [2.2.1]propellane (PPL), and norbornane (NBA). These compounds are components of high energy density (HED) fuels or precursor molecules. Understanding their chemical electronic structures reveals how energy is stored in HED compounds. The carbon nuclear magnetic resonance (C NMR) chemical shifts and C1s core electron binding energy (CEBE) properties were calculated using density functional theory (DFT). The results suggest that saturated C–C single σ-bonds and strained polycycloalkane structures are the primary energy storage mechanisms for these hydrocarbons. This study provides valuable theoretical insights for the development of sustainable HED aviation fuel (eFuel).","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"18 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-05DOI: 10.1016/j.mtchem.2024.102294
Richa Jaswal, Dinesh Kumar, Joshua Lee, Chan Hee Park, Kyung Hyun Min
Herein, we report bifunctional 2D aligned PCL@Au-PDA nanofibrous hybrid scaffolds composed of core-shell Au-PDA and PCL were prepared using a facile one-step electrospinning method. 36 nm sized AuNPs were surface functionalized with a 15 nm shell of PDA and resulted in Au-PDA with two concentrations of 1.5 mg and 3.0 mg uniformly dispersed in PCL that provided unique topological, biological properties and potential synergistic outcomes. Besides, PCL@Au-PDA provides exceptional extracellular matrix (ECM) for cell adhesion, nerve growth, proliferation, and differentiation of PC-12 and high affinity to S-42 cells. The gene expression analysis (qRT-PCR) showed a significantly increased expression level of the Actin beta, TREK-1, and MAP2 which further implied enhanced cell migration, proliferation, maturation, and differentiation. There was more than a 2.2-fold increase in the neurite length with PCL@Au-PDA as compared to pure PCL. Also, PCL@Au-PDA showed excellent photothermal efficiency and was found to ablate 95.23 % MCF-7 cells in 5.0 min at 0.5 W/cm of NIR laser power. The 15 nm PDA surface coating on AuNPs amplifies the photothermal effect of PCL@Au-PDA and accelerates the conversion of light energy to heat energy which stimulates the destruction of human breast cancer cells. FACS analysis showed the apoptotic percentages for MCF-7 cells at 69.67 % with PCL@Au-PDA whereas for pure PCL only 7.93 % were recorded which suggested that the superior plasmonic photothermal efficacy of PCL@Au-PDA even at low power density. PCL@Au-PDA nanofibers could be a highly promising bioactive material for breast cancer phototherapy and a possible bioimplant for sensation restoration after breast regeneration.
{"title":"Au-Polydopamine integrated polycaprolactone-based 2D plasmonic nanofibrous bimodal platform for synergistically enhanced peripheral neuropathy and superior cancer theranostics","authors":"Richa Jaswal, Dinesh Kumar, Joshua Lee, Chan Hee Park, Kyung Hyun Min","doi":"10.1016/j.mtchem.2024.102294","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102294","url":null,"abstract":"Herein, we report bifunctional 2D aligned PCL@Au-PDA nanofibrous hybrid scaffolds composed of core-shell Au-PDA and PCL were prepared using a facile one-step electrospinning method. 36 nm sized AuNPs were surface functionalized with a 15 nm shell of PDA and resulted in Au-PDA with two concentrations of 1.5 mg and 3.0 mg uniformly dispersed in PCL that provided unique topological, biological properties and potential synergistic outcomes. Besides, PCL@Au-PDA provides exceptional extracellular matrix (ECM) for cell adhesion, nerve growth, proliferation, and differentiation of PC-12 and high affinity to S-42 cells. The gene expression analysis (qRT-PCR) showed a significantly increased expression level of the Actin beta, TREK-1, and MAP2 which further implied enhanced cell migration, proliferation, maturation, and differentiation. There was more than a 2.2-fold increase in the neurite length with PCL@Au-PDA as compared to pure PCL. Also, PCL@Au-PDA showed excellent photothermal efficiency and was found to ablate 95.23 % MCF-7 cells in 5.0 min at 0.5 W/cm of NIR laser power. The 15 nm PDA surface coating on AuNPs amplifies the photothermal effect of PCL@Au-PDA and accelerates the conversion of light energy to heat energy which stimulates the destruction of human breast cancer cells. FACS analysis showed the apoptotic percentages for MCF-7 cells at 69.67 % with PCL@Au-PDA whereas for pure PCL only 7.93 % were recorded which suggested that the superior plasmonic photothermal efficacy of PCL@Au-PDA even at low power density. PCL@Au-PDA nanofibers could be a highly promising bioactive material for breast cancer phototherapy and a possible bioimplant for sensation restoration after breast regeneration.","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"19 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：