Colloids and Surfaces A: Physicochemical and Engineering Aspects最新文献

Ferromagnetically modified N self-doped tea residue biochar three-dimensional electrode for the treatment of tetracycline in high salt water environment

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2024-12-11 DOI: 10.1016/j.colsurfa.2024.135956

Siqi Zeng , Yu He , Xiuqing Li , Yuan Li , Hailong Tian , Renpeng Yin , Qinghuan Zhang , Dayang Yu

Tetracycline hydrochloride (TCH) has become one of the representative organic pollutants in marine wastewater. The high-salt water environment characteristics of marine wastewater increase the difficulty of TCH repair. Three-dimensional electrode technology can utilize chloride ions in the marine wastewater as an electrolyte to improve the degradation of the reaction system. In this study, a ferromagnetic modified N self-doped tea residue biochar (FNTB) was prepared by using the N-rich property of tea residue waste. A three-dimensional electrode system (3D-FNTB) for efficient treatment of TCH in high-salinity mariculture wastewater was established by using FNTB as particle electrode. The chloride ions in the water were converted into active chlorine to assist in the removal of TCH. The presence of N and Fe in FNTB could effectively improve its conductivity and electrocatalytic activity, so that FNTB could simultaneously act as an electrode material, Fenton/Fenton-like catalyst and adsorbent during the removal of TCH, and simultaneously remove TCH efficiently. Under the conditions of initial NaCl concentration of 20 g L⁻¹, pH of 3.8, and voltage of 2 V, the removal rate of TCH at 100 mg L⁻¹ by 2 g FNTB reached 99.97 %, and the removal rate of TOC was 78.86 %. The removal rate of TCH by FNTB could still reach 98.54 % after repeated use for 10 times. This study provided an idea for the treatment of high-salt organic wastewater and resource utilization of tea residue.

{"title":"Ferromagnetically modified N self-doped tea residue biochar three-dimensional electrode for the treatment of tetracycline in high salt water environment","authors":"Siqi Zeng , Yu He , Xiuqing Li , Yuan Li , Hailong Tian , Renpeng Yin , Qinghuan Zhang , Dayang Yu","doi":"10.1016/j.colsurfa.2024.135956","DOIUrl":"10.1016/j.colsurfa.2024.135956","url":null,"abstract":"<div><div>Tetracycline hydrochloride (TCH) has become one of the representative organic pollutants in marine wastewater. The high-salt water environment characteristics of marine wastewater increase the difficulty of TCH repair. Three-dimensional electrode technology can utilize chloride ions in the marine wastewater as an electrolyte to improve the degradation of the reaction system. In this study, a ferromagnetic modified N self-doped tea residue biochar (FNTB) was prepared by using the N-rich property of tea residue waste. A three-dimensional electrode system (3D-FNTB) for efficient treatment of TCH in high-salinity mariculture wastewater was established by using FNTB as particle electrode. The chloride ions in the water were converted into active chlorine to assist in the removal of TCH. The presence of N and Fe in FNTB could effectively improve its conductivity and electrocatalytic activity, so that FNTB could simultaneously act as an electrode material, Fenton/Fenton-like catalyst and adsorbent during the removal of TCH, and simultaneously remove TCH efficiently. Under the conditions of initial NaCl concentration of 20 g L<sup>−1</sup>, pH of 3.8, and voltage of 2 V, the removal rate of TCH at 100 mg L<sup>−1</sup> by 2 g FNTB reached 99.97 %, and the removal rate of TOC was 78.86 %. The removal rate of TCH by FNTB could still reach 98.54 % after repeated use for 10 times. This study provided an idea for the treatment of high-salt organic wastewater and resource utilization of tea residue.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135956"},"PeriodicalIF":4.9,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098295","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}

引用次数: 0

One-step hydrothermal synthesis of Co-MOF/Co3O4/rGO hybrid nanocomposite as high-performance anode of alkali metal-ion batteries

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2024-12-09 DOI: 10.1016/j.colsurfa.2024.135931

Xiaojie Yin , Fei Yang , Wenlu Mao , Yu Mei , Jia-ao Qi , Ping Li , Zhaowei Li , Tao Jiang , Shuxin Ding , Yang Han

Metal-organic frameworks (MOFs) frequently encounter issues such as inadequate conductivity and structural stability, constraining their utility in energy storage. Combining MOFs with other functional materials to form MOFs composites offers a promising approach to amalgamate advantages and address limitations. In this study, we developed a Co-MOF/Co₃O₄/rGO hybrid nanocomposite using a controlled one-step hydrothermal method. The pristine Co-MOF can be transformed into Co-MOF/Co₃O₄ by varying the amount of NaOH, and the final product Co-MOF/Co₃O₄/rGO can be obtained when reduced graphene oxide is added during the synthesis process. Due to the unique and synergistic structure consisting of Co-MOF, Co₃O₄, and rGO, Co-MOF/Co₃O₄/rGO exhibited excellent electrochemical performances. The Co-MOF/Co₃O₄/rGO composite demonstrated an initial charge capacity of 931 mAh g⁻¹ when utilized as an anode in lithium-ion batteries at 100 mA g⁻¹. Impressively, it maintained a reversible capacity of 1210 mAh g⁻¹ even after 300 cycles, showcasing its excellent cycling stability. Furthermore, its applicability was extended to sodium-ion and potassium-ion batteries, where it exhibited reversible capacities of 343 mAh g⁻¹ and 319 mAh g⁻¹, respectively, at the same current density after 300 cycles. These results highlight the versatility and promising performance of the Co-MOF/Co₃O₄/rGO composite as an electrode material across various types of batteries.

{"title":"One-step hydrothermal synthesis of Co-MOF/Co3O4/rGO hybrid nanocomposite as high-performance anode of alkali metal-ion batteries","authors":"Xiaojie Yin , Fei Yang , Wenlu Mao , Yu Mei , Jia-ao Qi , Ping Li , Zhaowei Li , Tao Jiang , Shuxin Ding , Yang Han","doi":"10.1016/j.colsurfa.2024.135931","DOIUrl":"10.1016/j.colsurfa.2024.135931","url":null,"abstract":"<div><div>Metal-organic frameworks (MOFs) frequently encounter issues such as inadequate conductivity and structural stability, constraining their utility in energy storage. Combining MOFs with other functional materials to form MOFs composites offers a promising approach to amalgamate advantages and address limitations. In this study, we developed a Co-MOF/Co<sub>3</sub>O<sub>4</sub>/rGO hybrid nanocomposite using a controlled one-step hydrothermal method. The pristine Co-MOF can be transformed into Co-MOF/Co<sub>3</sub>O<sub>4</sub> by varying the amount of NaOH, and the final product Co-MOF/Co<sub>3</sub>O<sub>4</sub>/rGO can be obtained when reduced graphene oxide is added during the synthesis process. Due to the unique and synergistic structure consisting of Co-MOF, Co<sub>3</sub>O<sub>4</sub>, and rGO, Co-MOF/Co<sub>3</sub>O<sub>4</sub>/rGO exhibited excellent electrochemical performances. The Co-MOF/Co<sub>3</sub>O<sub>4</sub>/rGO composite demonstrated an initial charge capacity of 931 mAh g<sup>−1</sup> when utilized as an anode in lithium-ion batteries at 100 mA g<sup>−1</sup>. Impressively, it maintained a reversible capacity of 1210 mAh g<sup>−1</sup> even after 300 cycles, showcasing its excellent cycling stability. Furthermore, its applicability was extended to sodium-ion and potassium-ion batteries, where it exhibited reversible capacities of 343 mAh g<sup>−1</sup> and 319 mAh g<sup>−1</sup>, respectively, at the same current density after 300 cycles. These results highlight the versatility and promising performance of the Co-MOF/Co<sub>3</sub>O<sub>4</sub>/rGO composite as an electrode material across various types of batteries.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135931"},"PeriodicalIF":4.9,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098294","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}

引用次数: 0

In situ complexation of bio-based ATP with copper and cobalt on graphene surfaces to improve the fire resistance of epoxy coatings

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2024-12-09 DOI: 10.1016/j.colsurfa.2024.135951

Mingwu Wang , Fei Zhong , Chunyan Chen , Xubin Yang , Chunlin Chen , Bin Wang , Hong Xia , Jiaming Song

Adenosine triphosphate (ATP), consisting of ribose, adenine and phosphate groups, can be used as a carbon, acid and gas source, respectively, in the combustion process, thereby being known as an ‘all-in-one’ intumescent flame retardant. Here, we prepared a new type of ATP-Cu/Co nanoparticles through the strong interaction between active N,O groups in the ATP structure and metal ions (Cu^2 +, Co²⁺), and combined them with reduced graphene oxide (RGO) with high barrier ability to obtain a composite flame retardant (RGO@ATP-Cu/Co). The data showed that RGO/ACC_2.0 %/EP displayed the lowest backside temperature value (164.6 °C) during flame impingement. In comparison, RGO/ACC_2.0 %/EP displayed a significantly highest expansion height and expansion rate (25.4 mm, 16.96) during the calcination process. The RGO/ACC_2.0 %/EP ultimately reached the highest limiting oxygen index (LOI, 31.7 %), residual carbon content (31.4 %), and achieved a V₀ rating for the UL-94 test. Furthermore, the peak heat release rate (PHRR), total heat release rate (THR), peak smoke production rate (PSPR), total smoke production (TSP), and peak CO production rate (PCOPR) of RGO/ACC_2.0 %/EP were reduced by 38.4 %, 45.9 %, 46.6 %, 41.3 %, and 57.5 %, respectively, compared to pure EP, which proves its excellent flame retardant properties. In addition, signal markers specific to metal oxides were identified in the RGO/ACC_2.0 %/EP residual char structure, which significantly enhanced the oxidation resistance and thermal isolation efficacy of the residual carbon.

{"title":"In situ complexation of bio-based ATP with copper and cobalt on graphene surfaces to improve the fire resistance of epoxy coatings","authors":"Mingwu Wang , Fei Zhong , Chunyan Chen , Xubin Yang , Chunlin Chen , Bin Wang , Hong Xia , Jiaming Song","doi":"10.1016/j.colsurfa.2024.135951","DOIUrl":"10.1016/j.colsurfa.2024.135951","url":null,"abstract":"<div><div>Adenosine triphosphate (ATP), consisting of ribose, adenine and phosphate groups, can be used as a carbon, acid and gas source, respectively, in the combustion process, thereby being known as an ‘all-in-one’ intumescent flame retardant. Here, we prepared a new type of ATP-Cu/Co nanoparticles through the strong interaction between active N,O groups in the ATP structure and metal ions (Cu<sup>2 +</sup>, Co<sup>2+</sup>), and combined them with reduced graphene oxide (RGO) with high barrier ability to obtain a composite flame retardant (RGO@ATP-Cu/Co). The data showed that RGO/ACC<sub>2.0 %</sub>/EP displayed the lowest backside temperature value (164.6 °C) during flame impingement. In comparison, RGO/ACC<sub>2.0 %</sub>/EP displayed a significantly highest expansion height and expansion rate (25.4 mm, 16.96) during the calcination process. The RGO/ACC<sub>2.0 %</sub>/EP ultimately reached the highest limiting oxygen index (LOI, 31.7 %), residual carbon content (31.4 %), and achieved a V<sub>0</sub> rating for the UL-94 test. Furthermore, the peak heat release rate (PHRR), total heat release rate (THR), peak smoke production rate (PSPR), total smoke production (TSP), and peak CO production rate (PCOPR) of RGO/ACC<sub>2.0 %</sub>/EP were reduced by 38.4 %, 45.9 %, 46.6 %, 41.3 %, and 57.5 %, respectively, compared to pure EP, which proves its excellent flame retardant properties. In addition, signal markers specific to metal oxides were identified in the RGO/ACC<sub>2.0 %</sub>/EP residual char structure, which significantly enhanced the oxidation resistance and thermal isolation efficacy of the residual carbon.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135951"},"PeriodicalIF":4.9,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098293","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}

引用次数: 0

Comparison of structural and mechanical properties between water-in-oil high internal phase Pickering emulsions stabilized with surface-modified spindle-shaped and amorphous TiO2 particles

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2024-12-07 DOI: 10.1016/j.colsurfa.2024.135940

YeRin Kim , Jun Pil Hwang , SeoYoung Choi , SooBin Choi , EunSuk Lee , Sun Sang Kwon , Tae Hoon Kim , Yong Jae Cho , KyuHan Kim

Water-in-oil high internal phase Pickering emulsions (W/O HIPPEs) are known for their polyhedral droplet structures and viscoelastic properties, attributed to their high dispersed phase volume fraction. These emulsions are particularly useful for encapsulating water-soluble compounds while minimizing the use of the oil phase, making them highly desirable for applications in industries such as pharmaceuticals, cosmetics, and food. While most studies have focused on stabilizing oil-in-water (O/W) HIPPEs using amorphous TiO₂ particles, this study, for the first time, investigates the stabilization of W/O HIPPEs using TiO₂ particles modified with hydrophobic stearic acid to enhance stability. Additionally, we explore the critical role of particle shape—comparing spindle-shaped and amorphous particles—on the interfacial stability and mechanical properties of W/O HIPPEs. Through detailed analysis of droplet size, particle behavior at the interface, and the rheological properties of the emulsions, we demonstrate the versatility of these TiO₂ particles in stabilizing HIPPEs with tunable internal structures. This research provides a foundation for the customizable design of HIPPE formulations, paving the way for targeted applications across a wide range of industries.

{"title":"Comparison of structural and mechanical properties between water-in-oil high internal phase Pickering emulsions stabilized with surface-modified spindle-shaped and amorphous TiO2 particles","authors":"YeRin Kim , Jun Pil Hwang , SeoYoung Choi , SooBin Choi , EunSuk Lee , Sun Sang Kwon , Tae Hoon Kim , Yong Jae Cho , KyuHan Kim","doi":"10.1016/j.colsurfa.2024.135940","DOIUrl":"10.1016/j.colsurfa.2024.135940","url":null,"abstract":"<div><div>Water-in-oil high internal phase Pickering emulsions (W/O HIPPEs) are known for their polyhedral droplet structures and viscoelastic properties, attributed to their high dispersed phase volume fraction. These emulsions are particularly useful for encapsulating water-soluble compounds while minimizing the use of the oil phase, making them highly desirable for applications in industries such as pharmaceuticals, cosmetics, and food. While most studies have focused on stabilizing oil-in-water (O/W) HIPPEs using amorphous TiO<sub>2</sub> particles, this study, for the first time, investigates the stabilization of W/O HIPPEs using TiO<sub>2</sub> particles modified with hydrophobic stearic acid to enhance stability. Additionally, we explore the critical role of particle shape—comparing spindle-shaped and amorphous particles—on the interfacial stability and mechanical properties of W/O HIPPEs. Through detailed analysis of droplet size, particle behavior at the interface, and the rheological properties of the emulsions, we demonstrate the versatility of these TiO<sub>2</sub> particles in stabilizing HIPPEs with tunable internal structures. This research provides a foundation for the customizable design of HIPPE formulations, paving the way for targeted applications across a wide range of industries.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135940"},"PeriodicalIF":4.9,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098865","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}

引用次数: 0

Pollen-derived porous carbon with excellent photothermal performance for laser ignition application

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2024-12-06 DOI: 10.1016/j.colsurfa.2024.135932

Jie Li , Yaozhi Wang , Keding Li , Wei Jing , Yong Zhang , Renxin Zhang , Xilong Qin , Ding Zhou , Long Zhang

Porous biomass pollens were comprehensively investigated as promising candidates for cost-effective and high-performance photothermal carbon materials suitable for laser ignition applications. The present study involved the fabrication of porous carbon from biomass pollen, featuring regular pore/fold architectures, through a precisely controlled thermal treatment protocol conducted within an inert argon atmosphere. The thermal treatment regimen was meticulously fine-tuned to elucidate the effects of carbonization temperature on the morphological characteristics, compositional analysis, optical absorption, and photothermal properties of the resultant nanoparticles. Under optimal carbonization conditions, the as-prepared pollen-derived carbons retained the distinctive porous/folded surface morphology of the native pollen substrates, which was beneficial for enhanced light absorbance and photothermal activity. The optimized products exhibited an exceptional maximum temperature increment of 385°C under pulsed laser irradiation of 0.7 W. Furthermore, an extensive evaluation of three distinct pollen types confirmed the broad applicability of carbonization techniques to enhance the photothermal properties of pollen-derived materials.

{"title":"Pollen-derived porous carbon with excellent photothermal performance for laser ignition application","authors":"Jie Li , Yaozhi Wang , Keding Li , Wei Jing , Yong Zhang , Renxin Zhang , Xilong Qin , Ding Zhou , Long Zhang","doi":"10.1016/j.colsurfa.2024.135932","DOIUrl":"10.1016/j.colsurfa.2024.135932","url":null,"abstract":"<div><div>Porous biomass pollens were comprehensively investigated as promising candidates for cost-effective and high-performance photothermal carbon materials suitable for laser ignition applications. The present study involved the fabrication of porous carbon from biomass pollen, featuring regular pore/fold architectures, through a precisely controlled thermal treatment protocol conducted within an inert argon atmosphere. The thermal treatment regimen was meticulously fine-tuned to elucidate the effects of carbonization temperature on the morphological characteristics, compositional analysis, optical absorption, and photothermal properties of the resultant nanoparticles. Under optimal carbonization conditions, the as-prepared pollen-derived carbons retained the distinctive porous/folded surface morphology of the native pollen substrates, which was beneficial for enhanced light absorbance and photothermal activity. The optimized products exhibited an exceptional maximum temperature increment of 385°C under pulsed laser irradiation of 0.7 W. Furthermore, an extensive evaluation of three distinct pollen types confirmed the broad applicability of carbonization techniques to enhance the photothermal properties of pollen-derived materials.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135932"},"PeriodicalIF":4.9,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098297","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}

引用次数: 0

Integrated photosystem II with MXene QDs/TiO2 inverse opal bioelectrode for mimic biophotovoltaic applications

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2024-12-06 DOI: 10.1016/j.colsurfa.2024.135921

Zaigui Yuan , Jiakang Li , Ying Yang , Xiyun Feng , Jing Shen , Jun Wang , Liangfei Duan , Jiao Li , Xufeng Zhang

Photosystem II protein (PSII) plays an important role in hybrid artificial photosynthetic systems. The conversion eﬃciency of these hybrid bioelectrodes is influenced by several factors, including electron transfer, the loading capacity of PSII, and the absorption and conversion of solar energy. In this work, a bioinspired artificial photo-anode system was designed by integrating the PSII protein onto MXene quantum dots (QDs) modified photonic crystal electrodes. The TiO₂ inverse opal hybrid photonic crystal (TIO), which mimics the stacked structure of thylakoids, not only provides a larger surface area for protein loading but also enhances the conversion and absorption eﬃciency of solar energy. Consequently, the TIO/MXene QDs/PSII composite exhibits a higher photocurrent response and improved stability compared to TIO/PSII. Furthermore, the incorporation of MXene QDs facilitates the transfer of photogenerated electrons from the photosynthetic protein to the surface of the electrode. Additionally, the mediated electron transfer (MET) photocurrent response demonstrates outstanding intensity (18.95 μA·cm⁻²). This work provides a strategy for the construction of a hybrid solar energy conversion system based on a photosystem complex.

{"title":"Integrated photosystem II with MXene QDs/TiO2 inverse opal bioelectrode for mimic biophotovoltaic applications","authors":"Zaigui Yuan , Jiakang Li , Ying Yang , Xiyun Feng , Jing Shen , Jun Wang , Liangfei Duan , Jiao Li , Xufeng Zhang","doi":"10.1016/j.colsurfa.2024.135921","DOIUrl":"10.1016/j.colsurfa.2024.135921","url":null,"abstract":"<div><div>Photosystem II protein (PSII) plays an important role in hybrid artificial photosynthetic systems. The conversion eﬃciency of these hybrid bioelectrodes is influenced by several factors, including electron transfer, the loading capacity of PSII, and the absorption and conversion of solar energy. In this work, a bioinspired artificial photo-anode system was designed by integrating the PSII protein onto MXene quantum dots (QDs) modified photonic crystal electrodes. The TiO<sub>2</sub> inverse opal hybrid photonic crystal (TIO), which mimics the stacked structure of thylakoids, not only provides a larger surface area for protein loading but also enhances the conversion and absorption eﬃciency of solar energy. Consequently, the TIO/MXene QDs/PSII composite exhibits a higher photocurrent response and improved stability compared to TIO/PSII. Furthermore, the incorporation of MXene QDs facilitates the transfer of photogenerated electrons from the photosynthetic protein to the surface of the electrode. Additionally, the mediated electron transfer (MET) photocurrent response demonstrates outstanding intensity (18.95 μA·c<em>m</em><sup>−2</sup>). This work provides a strategy for the construction of a hybrid solar energy conversion system based on a photosystem complex.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135921"},"PeriodicalIF":4.9,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098298","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}

引用次数: 0

Bioinspired fabrication of ZrO2 nanocomposite PVDF membranes with underwater superoleophobicity for oil/water separation

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2024-12-06 DOI: 10.1016/j.colsurfa.2024.135920

Xiaofang Wang, Ran Yu, Liying Pu, Mingqiao Chen, Xingyu Zhu, Shangpeng Fan, Peng Liu, Xiang Shen

Membrane technologies have been extensively employed to separate and purify emulsified oily wastewater. However, the long-term performance of membranes is still restricted by oil fouling and their inability to function in severe conditions. Herein, ZrO₂ nanoparticles were deposited onto the poly(vinylidene fluoride) membrane surface using γ-aminopropyl triethoxysilane (KH550) as a coupling agent, as inspired by a biomimetic coating method of polydopamine (PDA). It has been determined that the distribution density of nanoparticles can be tuned by adjusting the KH550 and ZrO₂ concentrations. After coating the PDA and ZrO₂ layers, the nanocomposite membrane exhibits a high degree of hydrophilicity, underwater superoleophobicity, and anti-oil-fouling properties. This outstanding characteristic endows the membrane with an ultrahigh permeation flux of emulsion and a rejection ratio of over 99 % for a variety of oil/water emulsions. The flux recovery of the nanocomposite membrane remains at over 91 % after thirteen cyclic filtrations of emulsions. Moreover, the excellent surface wettability and oil/water separation properties of the nanocomposite membranes can be maintained under prolonged exposure to strong acid, alkali, and salt solutions.

{"title":"Bioinspired fabrication of ZrO2 nanocomposite PVDF membranes with underwater superoleophobicity for oil/water separation","authors":"Xiaofang Wang, Ran Yu, Liying Pu, Mingqiao Chen, Xingyu Zhu, Shangpeng Fan, Peng Liu, Xiang Shen","doi":"10.1016/j.colsurfa.2024.135920","DOIUrl":"10.1016/j.colsurfa.2024.135920","url":null,"abstract":"<div><div>Membrane technologies have been extensively employed to separate and purify emulsified oily wastewater. However, the long-term performance of membranes is still restricted by oil fouling and their inability to function in severe conditions. Herein, ZrO<sub>2</sub> nanoparticles were deposited onto the poly(vinylidene fluoride) membrane surface using γ-aminopropyl triethoxysilane (KH550) as a coupling agent, as inspired by a biomimetic coating method of polydopamine (PDA). It has been determined that the distribution density of nanoparticles can be tuned by adjusting the KH550 and ZrO<sub>2</sub> concentrations. After coating the PDA and ZrO<sub>2</sub> layers, the nanocomposite membrane exhibits a high degree of hydrophilicity, underwater superoleophobicity, and anti-oil-fouling properties. This outstanding characteristic endows the membrane with an ultrahigh permeation flux of emulsion and a rejection ratio of over 99 % for a variety of oil/water emulsions. The flux recovery of the nanocomposite membrane remains at over 91 % after thirteen cyclic filtrations of emulsions. Moreover, the excellent surface wettability and oil/water separation properties of the nanocomposite membranes can be maintained under prolonged exposure to strong acid, alkali, and salt solutions.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135920"},"PeriodicalIF":4.9,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098860","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}

引用次数: 0

Synthesis and properties of block polycarboxylate dispersant containing benzene ring side groups by catalytic chain transfer polymerization (CCTP)

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2024-12-06 DOI: 10.1016/j.colsurfa.2024.135933

Ruizhi Meng , Junfeng Zhu , Jing Yang , Wanbin Zhang , Junguo Li , Guanghua Zhang

In order to design and synthesize dispersants with controllable structure and narrow molecular weight distribution; to overcome the environmental pollution caused by the use of sulfur-containing reagents in RAFT polymerization method. A novel block polycarboxylic acid polymer was prepared by catalytic chain transfer polymerization using methacrylic acid and poly(ethylene glycol) monomethyl ether methacrylate as the hydrophilic monomers, and benzyl methacrylate as the hydrophobic monomer, and used as a coal water slurry dispersant. Structural and molecular weight testing of polymer using ¹H NMR, FTIR, and GPC. The results showed that the target products were successfully synthesized and the molecular weights of the polymers were all around 5000 g/mol. Discuss the rheological properties and stability of coal water slurry prepared with different monomer ratios of dispersants to find the optimal monomer ratio. It was proved that the dispersant with a monomer ratio of 4:1:0.8 had the best dispersing performance. In addition, the adsorption behavior of the dispersant was studied by TOC and XPS to elucidate the dispersion mechanism of the dispersant. It is proved that the dispersant on the surface of coal conforms to the monomolecular layer adsorption model, and the addition of the dispersant effectively reduces the content of hydrophobic groups on the coal surface and increases the content of oxygen-containing functional groups, thus improving the wettability of the coal surface.

{"title":"Synthesis and properties of block polycarboxylate dispersant containing benzene ring side groups by catalytic chain transfer polymerization (CCTP)","authors":"Ruizhi Meng , Junfeng Zhu , Jing Yang , Wanbin Zhang , Junguo Li , Guanghua Zhang","doi":"10.1016/j.colsurfa.2024.135933","DOIUrl":"10.1016/j.colsurfa.2024.135933","url":null,"abstract":"<div><div>In order to design and synthesize dispersants with controllable structure and narrow molecular weight distribution; to overcome the environmental pollution caused by the use of sulfur-containing reagents in RAFT polymerization method. A novel block polycarboxylic acid polymer was prepared by catalytic chain transfer polymerization using methacrylic acid and poly(ethylene glycol) monomethyl ether methacrylate as the hydrophilic monomers, and benzyl methacrylate as the hydrophobic monomer, and used as a coal water slurry dispersant. Structural and molecular weight testing of polymer using <sup>1</sup>H NMR, FTIR, and GPC. The results showed that the target products were successfully synthesized and the molecular weights of the polymers were all around 5000 g/mol. Discuss the rheological properties and stability of coal water slurry prepared with different monomer ratios of dispersants to find the optimal monomer ratio. It was proved that the dispersant with a monomer ratio of 4:1:0.8 had the best dispersing performance. In addition, the adsorption behavior of the dispersant was studied by TOC and XPS to elucidate the dispersion mechanism of the dispersant. It is proved that the dispersant on the surface of coal conforms to the monomolecular layer adsorption model, and the addition of the dispersant effectively reduces the content of hydrophobic groups on the coal surface and increases the content of oxygen-containing functional groups, thus improving the wettability of the coal surface.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135933"},"PeriodicalIF":4.9,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098864","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}

引用次数: 0

One-dimensional C/Co composite nanofibers derived from ZIF-67 with excellent wideband electromagnetic microwave absorption performance

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2024-12-06 DOI: 10.1016/j.colsurfa.2024.135910

Danqiang Huang , Xiangyun Zhang , Jianfeng Dai , Zizhou Yuan

The rapid advancement of wireless communications, radar systems, and electronic devices has resulted in a substantial increase in electromagnetic interference (EMI), which poses a threat to electronic device performance and human health. This study addresses the urgent need for lightweight materials with strong absorption capacities, wide absorption bandwidths, and low thickness values. For this purpose, ZIF-67-derived C/Co nanofibers were synthesized via electrospinning, dipping, and high-temperature carbonization. Co²⁺ ions were pre-anchored and encapsulated in polyacrylonitrile (PAN) fibers and are grown by immersion in an organic ligand. Utilizing 0.4 g of cobalt nitrate hexahydrate, the amount of encapsulated Co²⁺ was optimized to provide the greatest electromagnetic wave absorption performance. Under these conditions, the reflection loss was −49.45 dB, and the maximum effective absorption bandwidth was 6.48 GHz, thereby covering the entire Ku band. The composite material demonstrated a significant improvement in impedance matching and electromagnetic wave dissipation, which was attributed to the uniform dispersion of Co particles and the formation of multi-component heterogeneous interfaces. This study presents a pragmatic method for creating high-performance materials that could potentially reduce electromagnetic interference (EMI) in the aerospace, telecommunications, and defense sectors.

{"title":"One-dimensional C/Co composite nanofibers derived from ZIF-67 with excellent wideband electromagnetic microwave absorption performance","authors":"Danqiang Huang , Xiangyun Zhang , Jianfeng Dai , Zizhou Yuan","doi":"10.1016/j.colsurfa.2024.135910","DOIUrl":"10.1016/j.colsurfa.2024.135910","url":null,"abstract":"<div><div>The rapid advancement of wireless communications, radar systems, and electronic devices has resulted in a substantial increase in electromagnetic interference (EMI), which poses a threat to electronic device performance and human health. This study addresses the urgent need for lightweight materials with strong absorption capacities, wide absorption bandwidths, and low thickness values. For this purpose, ZIF-67-derived C/Co nanofibers were synthesized via electrospinning, dipping, and high-temperature carbonization. Co<sup>2+</sup> ions were pre-anchored and encapsulated in polyacrylonitrile (PAN) fibers and are grown by immersion in an organic ligand. Utilizing 0.4 g of cobalt nitrate hexahydrate, the amount of encapsulated Co<sup>2+</sup> was optimized to provide the greatest electromagnetic wave absorption performance. Under these conditions, the reflection loss was −49.45 dB, and the maximum effective absorption bandwidth was 6.48 GHz, thereby covering the entire Ku band. The composite material demonstrated a significant improvement in impedance matching and electromagnetic wave dissipation, which was attributed to the uniform dispersion of Co particles and the formation of multi-component heterogeneous interfaces. This study presents a pragmatic method for creating high-performance materials that could potentially reduce electromagnetic interference (EMI) in the aerospace, telecommunications, and defense sectors.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135910"},"PeriodicalIF":4.9,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098862","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}

引用次数: 0

Integration of multistructured microcapsules with self-healing and antimicrobial properties into polymer coatings for enhanced metal surface protection

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Pub Date : 2024-12-06 DOI: 10.1016/j.colsurfa.2024.135895

Jinheng Luo , Yufei Tang , Lixia Zhu , Gang Wu , Yan Long , Kangkai Xu , Junyi Jiang , Wending Yu

To address the issue of corrosion in natural gas pipelines under complex environments, traditional protective methods such as corrosion inhibitors, antimicrobial agents, and coatings often fail to provide long-term protection. This study developed a high-performance anticorrosive coating with antibacterial and self-healing properties. Using urea-formaldehyde prepolymer (PUF) as the wall material and clove oil (Co) and epoxy resin (EP) as the core materials, multi-scale hierarchical microcapsules were synthesized via in-situ polymerization and incorporated into a quaternized epoxy resin matrix(EP-QAC). Compared with the pure EP coating, the Co/EP@PUF/EP-QAC coating maintains an impedance modulus of 1.37 × 10⁷ Ω·cm² at |Z|_0.01 Hz after 16 days of immersion. It also demonstrates excellent self-healing performance in immersion tests conducted over 1–5 days following scratch treatment. Furthermore, antibacterial testing reveals that the Co/EP@PUF/EP-QAC coating effectively inhibits the growth of sulfate-reducing bacteria (SRB), highlighting the synergistic enhancement of antibacterial properties achieved through the incorporation of Co/EP@PUF microcapsules and the quaternary ammonium-modified epoxy matrix. This study offers a promising strategy for the long-term protection of metal surfaces in harsh industrial environments.

{"title":"Integration of multistructured microcapsules with self-healing and antimicrobial properties into polymer coatings for enhanced metal surface protection","authors":"Jinheng Luo , Yufei Tang , Lixia Zhu , Gang Wu , Yan Long , Kangkai Xu , Junyi Jiang , Wending Yu","doi":"10.1016/j.colsurfa.2024.135895","DOIUrl":"10.1016/j.colsurfa.2024.135895","url":null,"abstract":"<div><div>To address the issue of corrosion in natural gas pipelines under complex environments, traditional protective methods such as corrosion inhibitors, antimicrobial agents, and coatings often fail to provide long-term protection. This study developed a high-performance anticorrosive coating with antibacterial and self-healing properties. Using urea-formaldehyde prepolymer (PUF) as the wall material and clove oil (Co) and epoxy resin (EP) as the core materials, multi-scale hierarchical microcapsules were synthesized via in-situ polymerization and incorporated into a quaternized epoxy resin matrix(EP-QAC). Compared with the pure EP coating, the Co/EP@PUF/EP-QAC coating maintains an impedance modulus of 1.37 × 10⁷ Ω·cm² at |Z|<sub>0.01 Hz</sub> after 16 days of immersion. It also demonstrates excellent self-healing performance in immersion tests conducted over 1–5 days following scratch treatment. Furthermore, antibacterial testing reveals that the Co/EP@PUF/EP-QAC coating effectively inhibits the growth of sulfate-reducing bacteria (SRB), highlighting the synergistic enhancement of antibacterial properties achieved through the incorporation of Co/EP@PUF microcapsules and the quaternary ammonium-modified epoxy matrix. This study offers a promising strategy for the long-term protection of metal surfaces in harsh industrial environments.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135895"},"PeriodicalIF":4.9,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098857","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}

引用次数: 0