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Dual-Functional Benzotrithiophene-Based Covalent Organic Frameworks for Photocatalytic Detoxification of Mustard Gas Simulants and Antibacterial Defense SCIE
期刊论文 | 2025 , 21 (12) | SMALL
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Abstract :

The persistent threats posed by toxic chemical warfare agents (CWAs) such as mustard gas (bis(2-chloroethyl) sulfide, HD) and bacterial contaminants demand the development of innovative, sustainable mitigation strategies. Photocatalytic processes that generate reactive oxygen species (ROS) offer a promising dual-functional approach for both chemical detoxification and antibacterial defense. In this study, two structurally analogous covalent organic frameworks (COFs), BPY-COF and BD-COF, are synthesized using benzotrithiophene as the donor unit paired with bipyridine and biphenyl, respectively. These COFs exhibit high crystallinity, broad-spectrum light absorption, and efficient charge carrier transport, with BPY-COF demonstrating superior performance due to the incorporation of heteroatoms. BPY-COF achieved ultrafast detoxification of the mustard gas simulant 2-chloroethyl ethyl sulfide (CEES) with a half-life of 35 min and 100% selectivity for 2-chloroethyl sulfoxide (CEESO) under white LED light, outperforming BD-COF. Additionally, electrospun composite fibers containing 40 wt.% BPY-COF maintained comparable CEES degradation rates and exhibited over 99% antibacterial efficiency against Escherichia coli and Bacillus subtilis within 60 min. These findings highlight the potential of BPY-COF as a multifunctional photocatalyst for integrated applications in chemical detoxification and antibacterial defense, addressing critical challenges in public health and safety.

Keyword :

antibacterial antibacterial charge transfer charge transfer covalent organic frameworks covalent organic frameworks photocatalytic degradation photocatalytic degradation

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GB/T 7714 Zhu, Yongchao , Qin, Liyang , Yang, Mingyuan et al. Dual-Functional Benzotrithiophene-Based Covalent Organic Frameworks for Photocatalytic Detoxification of Mustard Gas Simulants and Antibacterial Defense [J]. | SMALL , 2025 , 21 (12) .
MLA Zhu, Yongchao et al. "Dual-Functional Benzotrithiophene-Based Covalent Organic Frameworks for Photocatalytic Detoxification of Mustard Gas Simulants and Antibacterial Defense" . | SMALL 21 . 12 (2025) .
APA Zhu, Yongchao , Qin, Liyang , Yang, Mingyuan , Shi, Zhicheng , Chen, Hongxuan , Wen, Na et al. Dual-Functional Benzotrithiophene-Based Covalent Organic Frameworks for Photocatalytic Detoxification of Mustard Gas Simulants and Antibacterial Defense . | SMALL , 2025 , 21 (12) .
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Dual-Functional Benzotrithiophene-Based Covalent Organic Frameworks for Photocatalytic Detoxification of Mustard Gas Simulants and Antibacterial Defense EI
期刊论文 | 2025 , 21 (12) | Small
Dual-Functional Benzotrithiophene-Based Covalent Organic Frameworks for Photocatalytic Detoxification of Mustard Gas Simulants and Antibacterial Defense Scopus
期刊论文 | 2025 , 21 (12) | Small
Dual-Functional Benzotrithiophene-Based Covalent Organic Frameworks for Photocatalytic Detoxification of Mustard Gas Simulants and Antibacterial Defense Scopus
期刊论文 | 2025 | Small
Synthesis and Durable Antimicrobial and Anti-fungal Properties of Triclosan and Chitosan Co-grafted Polypropylene Nonwovens SCIE
期刊论文 | 2024 , 25 (11) , 4245-4256 | FIBERS AND POLYMERS
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Abstract :

Polypropylene (PP) nonwovens have been widely used in disposable protective masks and protective clothing, which are essential to protect healthcare workers from highly infectious diseases such as COVID-19. However, realizing the disinfection reusable function of PP nonwovens to reduce carbon emission or white waste pollution after extensive use has been still a great challenge. Herein, Durable Antimicrobial and Anti-fungal Post-disinfection polypropylene nonwovens were developed by co-grafting of Triclosan and Chitosan. The antibacterial performance test results showed that the as-prepared co-grafted polypropylene nonwoven has a > 99.9% of antimicrobial efficiency against E. coli, S. aureus as well as multi-drug-resistant P. aeruginosa, and the excellent anti-fungal performance against fungus (C. albicans) and mold (A. niger). Moreover, it retained excellent Antimicrobial and Anti-fungal Properties after disinfection 3 times with boiling water, 40 x diluted 84 disinfectant and 75% alcohol for 5 min. This work provided ideas for developing more effective pathogen protection and longer-lasting personal protective equipment to reduce the environmental impact of medical masks and personal protective equipment in terms of energy consumption, carbon emissions and waste generation.

Keyword :

Antibacterial Antibacterial Anti-fungal Anti-fungal Polypropylene nonwovens Polypropylene nonwovens UV irradiation modification UV irradiation modification

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GB/T 7714 Hu, Ke , Chen, Hongxuan , Lin, Yihui et al. Synthesis and Durable Antimicrobial and Anti-fungal Properties of Triclosan and Chitosan Co-grafted Polypropylene Nonwovens [J]. | FIBERS AND POLYMERS , 2024 , 25 (11) : 4245-4256 .
MLA Hu, Ke et al. "Synthesis and Durable Antimicrobial and Anti-fungal Properties of Triclosan and Chitosan Co-grafted Polypropylene Nonwovens" . | FIBERS AND POLYMERS 25 . 11 (2024) : 4245-4256 .
APA Hu, Ke , Chen, Hongxuan , Lin, Yihui , Han, Shitong , Wang, Qi , Peng, Houqian et al. Synthesis and Durable Antimicrobial and Anti-fungal Properties of Triclosan and Chitosan Co-grafted Polypropylene Nonwovens . | FIBERS AND POLYMERS , 2024 , 25 (11) , 4245-4256 .
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Synthesis and Durable Antimicrobial and Anti-fungal Properties of Triclosan and Chitosan Co-grafted Polypropylene Nonwovens Scopus
期刊论文 | 2024 , 25 (11) , 4149-4160 | Fibers and Polymers
Synthesis and Durable Antimicrobial and Anti-fungal Properties of Triclosan and Chitosan Co-grafted Polypropylene Nonwovens EI
期刊论文 | 2024 , 25 (11) , 4149-4160 | Fibers and Polymers
Double core-shell hollow nanocage CuO@Co 3 O 4 for the selective hydrogenolysis of C-O bonds of lignin without external hydrogen SCIE
期刊论文 | 2024 , 491 | CHEMICAL ENGINEERING JOURNAL
WoS CC Cited Count: 3
Abstract&Keyword Cite Version(2)

Abstract :

The design of a highly active Cu -Co catalyst for catalytic transfer hydrogenolysis of lignin without the use of external hydrogen remains highly challenging. In this work, Cu 2 O was initially encapsulated in ZIF-67, and subsequently Cu 2 O@ZIF-67 was utilized as a precursor and sacrificial template to prepare the unique double core-shell hollow nanocage CuO@Co 3 O 4 . Co and Cu, serving as Lewis acid sites and dehydrogenation sites for the hydrogen -donor solvent isopropanol, respectively, exhibited synergistic enhancement, further increasing the catalytic activity. Under the optimal conditions of 220 degrees C, 1 MPa N 2 , and 4 h, the catalyst achieved 100 % conversion of 2-phenoxy-1-phenylethanol and 100 % yield towards cyclohexanol and ethylbenzene. Furthermore, the catalyst remained stable and reusable after 5 cycles, providing a practicable guidance for the valueadded conversion of lignin.

Keyword :

C-O bonds cleavage C-O bonds cleavage CuCo-based catalyst CuCo-based catalyst Double core-shell hollow nanocage structure Double core-shell hollow nanocage structure Lignin Lignin

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GB/T 7714 Chen, Feng , Lin, Xuebin , Chen, Wei et al. Double core-shell hollow nanocage CuO@Co 3 O 4 for the selective hydrogenolysis of C-O bonds of lignin without external hydrogen [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 491 .
MLA Chen, Feng et al. "Double core-shell hollow nanocage CuO@Co 3 O 4 for the selective hydrogenolysis of C-O bonds of lignin without external hydrogen" . | CHEMICAL ENGINEERING JOURNAL 491 (2024) .
APA Chen, Feng , Lin, Xuebin , Chen, Wei , Wen, Na , Jin, Yanqiao . Double core-shell hollow nanocage CuO@Co 3 O 4 for the selective hydrogenolysis of C-O bonds of lignin without external hydrogen . | CHEMICAL ENGINEERING JOURNAL , 2024 , 491 .
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Double core–shell hollow nanocage CuO@Co3O4 for the selective hydrogenolysis of C–O bonds of lignin without external hydrogen Scopus
期刊论文 | 2024 , 491 | Chemical Engineering Journal
Double core–shell hollow nanocage CuO@Co3O4 for the selective hydrogenolysis of C–O bonds of lignin without external hydrogen EI
期刊论文 | 2024 , 491 | Chemical Engineering Journal
基于稀土上转换纳米粒子传感器的构建及其在食品添加剂检测中的应用
期刊论文 | 2024 , 44 (9) , 2459-2466 | 光谱学与光谱分析
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Abstract :

稀土上转换纳米粒子(UCNPs)因其具有毒性小、化学稳定性好和背景荧光低等优点被用于构建荧光纳米传感器.通过溶剂热法制备核壳UCNPs,采用柠檬酸钠对其进行表面配体交换得到水溶性核壳UCNPs(Cit-CS-UCNPs),以Cit-CS-UCNPs作为荧光传感器的能量供体,二氧化锰(MnO2)纳米片作为荧光传感器的能量受体,采用荧光共振能量转移(FRET)机理,构建了一种用于食品添加剂二氧化氢(H2O2)和叔丁基对苯二酚(TBHQ)检测的荧光纳米传感器(Cit-CS-UCNPs-MnO2).通过扫描电镜(SEM)、荧光光谱和紫外可见吸收光谱(UV-Vis)等分析测试手段对制备的纳米材料的形貌结构和性能进行表征.考察了猝灭剂浓度、孵育温度及孵育时间等实验条件对荧光传感体系检测性能的影响.荧光光谱和UV-Vis实验结果表明,Cit-CS-UCNPs最大发射峰位于654 nm,Cit-CS-UCNPs与MnO2结合后,核壳UCNPs发生荧光猝灭,当存在H2O2时,Cit-CS-UCNPs的荧光恢复,说明在此波段H2O2与MnO2纳米片发生氧化还原反应,MnO2纳米片被还原成Mn2+,逐渐从Cit-CS-UCNPs的表面解离下来;存在TBHQ时,Cit-CS-UCNPs-MnO2与TBHQ体系峰位与TBHQ偏移到253 nm,为TBHQ与MnO2纳米片发生氧化还原反应,使得Cit-CS-UCNPs-MnO2体系中FRET效应减弱,荧光强度回升.SEM结果表明,MnO2纳米片均匀包覆在Cit-CS-UCNPs的周围,在水中仍可保持良好的分散性,表明MnO2纳米片修饰到Cit-CS-UCNPs表面.对猝灭剂高锰酸钾(KMnO4)的浓度进行了优化.结果表明,当KMnO4浓度为10 mol·L-1时,猝灭效率可达90%.对检测条件进行优化,结果表明H2O2的检测孵育时间为25 min时,MnO2和H2O2之间氧化还原反应基本完全,Cit-CS-UCNPs-MnO2荧光恢复值最大;TBHQ的检测孵育时间为30 min.在最佳实验条件下,Cit-CS-UCNPs-MnO2 的荧光强度变化比率与 H2O2 浓度(0~1 000 μmol·L-1)及 TBHQ 浓度(0~0.6 mmol·L-1)分别具有良好的线性关系.保持最佳实验条件,选取食品中存在的代表性金属离子(如K+、Na+、Ca2+和Mg2+)和常见的食品添加剂苯甲酸(BA)、D-葡萄糖(Glu)、山梨酸钾(PS)、蔗糖(Suc)、纳他霉素(Nat)和肌醇(Ino)作为研究对象进行选择性测试,发现与H2O2相比,Cit-CS-UCNPs-MnO2对其他添加物质没有强烈的反应,传感器整体荧光信号波动不大,因此Cit-CS-UCNPs-MnO2对H2O2和TBHQ可进行特异性检测.

Keyword :

上转换纳米粒子 上转换纳米粒子 核壳结构 核壳结构 荧光纳米传感器 荧光纳米传感器

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GB/T 7714 张璇 , 王雅森 , 温娜 et al. 基于稀土上转换纳米粒子传感器的构建及其在食品添加剂检测中的应用 [J]. | 光谱学与光谱分析 , 2024 , 44 (9) : 2459-2466 .
MLA 张璇 et al. "基于稀土上转换纳米粒子传感器的构建及其在食品添加剂检测中的应用" . | 光谱学与光谱分析 44 . 9 (2024) : 2459-2466 .
APA 张璇 , 王雅森 , 温娜 , 吕海霞 , 李宝铭 . 基于稀土上转换纳米粒子传感器的构建及其在食品添加剂检测中的应用 . | 光谱学与光谱分析 , 2024 , 44 (9) , 2459-2466 .
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基于稀土上转换纳米粒子传感器的构建及其在食品添加剂检测中的应用
期刊论文 | 2024 , 44 (09) , 2459-2466 | 光谱学与光谱分析
共价有机框架双电场叠加实现高效光催化产氢
期刊论文 | 2024 , 63 (8) , 164-175 | 催化学报
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Abstract :

光催化水分解制氢是解决环境污染和能源危机的理想途径.共价有机骨架(COFs)作为一类由共价键连接的周期性网状拓扑材料,其电子结构和化学性质可在分子水平上进行定制和调控,是研究半导体光催化剂构-效关系的理想模型.为了提高COFs的电荷分离效率,在COFs骨架上设计供体-受体(D-A)单元,构筑分子内电场(IMEF)促进电荷定向迁移是一种行之有效的策略.然而,在亚胺键连接的COFs中,亚胺键取向诱导产生的键内电场(IBEF)对光生激子的分离效率的影响往往被忽视.因此,进一步研究IMEF与IBEF之间的相互作用对COFs内光生电子转移动力学的影响具有重要意义,可为深入揭示光催化产氢机制提供关键信息. 本文报道了一种基于COFs的双电场叠加策略,用于提高光催化产氢反应效率.首先,通过将有机单元的末端官能团进行互换,利用水热法成功制备了两种亚胺键取向相反的强D-A型COFs光催化剂,TNCA和TCNA.其中,官能团的微小变化保证了由D-A结构组成的IMEF方向和强度的一致性,可以使得在仅改变IBEF的情况下全面研究COFs的电子结构.X射线粉末衍射、傅里叶变换红外光谱、固体核磁以及X射线光电子能谱等结果证实了两种COFs的成功合成.随后,扫描电镜、透射电镜和氮气等温吸脱附曲线结果表明两种COFs均为介孔材料.紫外-可见漫反射光谱结果表明,所制备的催化剂具有良好的可见光吸收能力,结合莫特肖特基曲线结果,表明催化剂在热力学上均满足光催化产氢的要求.采用光致发光光谱、时间分辨荧光光谱、电子顺磁共振、光电流以及电化学阻抗研究了两种催化剂的载流子分离和转移行为,并且利用飞秒瞬态吸收光谱进一步明确了COFs中光生电荷转移动力学过程.结果表明,相较于TCNA,TNCA在光照下能够产生更多的光生电子且具有更长的寿命.光催化产氢活性评价结果显示,在可见光(A ≥ 420nm)照射下,具有同向叠加电场的TNCA,光催化析氢速率高达57.3 mmol·g-1·h-1,是具有相反电场取向TCNA(0.11 mmol·g-1·h-1)的520倍.并且TNCA具有更负的导带能级,有利于光生电子参与还原过程,最终获得较好的光催化析氢性能.此外,理论计算结果表明,当IMEF和IBEF取向一致时,亚胺键不仅可以为载流子迁移提供强大的驱动力,而且还能够有效地抑制载流子复合,进一步提高光生电子的利用率. 综上所述,本文提出了双电场叠加增强光生载流子高效分离的有效策略,为设计具有特定电场性质的COFs光催化材料提供了理论及实际参考.

Keyword :

光催化 光催化 共价有机框架 共价有机框架 分子内电场 分子内电场 制氢 制氢 键内电场 键内电场

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GB/T 7714 厉超 , 王朔 , 刘媛 et al. 共价有机框架双电场叠加实现高效光催化产氢 [J]. | 催化学报 , 2024 , 63 (8) : 164-175 .
MLA 厉超 et al. "共价有机框架双电场叠加实现高效光催化产氢" . | 催化学报 63 . 8 (2024) : 164-175 .
APA 厉超 , 王朔 , 刘媛 , 黄细河 , 庄严 , 吴舒鸿 et al. 共价有机框架双电场叠加实现高效光催化产氢 . | 催化学报 , 2024 , 63 (8) , 164-175 .
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Dual network composite hydrogels with robust antibacterial and antifouling capabilities for efficient wound healing SCIE
期刊论文 | 2024 , 12 (20) , 4909-4921 | JOURNAL OF MATERIALS CHEMISTRY B
WoS CC Cited Count: 2
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Abstract :

Wound dressings play a critical role in the wound healing process; however, conventional dressings often address singular functions, lacking versatility in meeting diverse wound healing requirements. Herein, dual-network, multifunctional hydrogels (PSA/CS-GA) have been designed and synthesized through a one-pot approach. The in vitro and in vivo experiments demonstrate that the optimized hydrogels have exceptional antifouling properties, potent antibacterial effects and rapid hemostatic capabilities. Notably, in a full-thickness rat wound model, the hydrogel group displays a remarkable wound healing rate exceeding 95% on day 10, surpassing both the control group and the commercial 3M group. Furthermore, the hydrogels exert an anti-inflammatory effect by reducing inflammatory factors interleukin 6 (IL-6) and tumor necrosis factor-alpha (TNF-alpha), enhance the release of the vascular endothelial growth factor (VEGF) to promote blood vessel proliferation, and augment collagen deposition in the wound, thus effectively accelerating wound healing in vivo. These innovative hydrogels present a novel and highly effective approach to wound healing. Dual network multifunctional hydrogels are developed using a one-pot synthesis approach. The in vitro and in vivo experiments demonstrate that these hydrogels have exceptional antifouling properties, potent antibacterial effects and rapid hemostatic capabilities.

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GB/T 7714 Jiang, Hongzhi , Huang, Xueping , Yang, Jiachao et al. Dual network composite hydrogels with robust antibacterial and antifouling capabilities for efficient wound healing [J]. | JOURNAL OF MATERIALS CHEMISTRY B , 2024 , 12 (20) : 4909-4921 .
MLA Jiang, Hongzhi et al. "Dual network composite hydrogels with robust antibacterial and antifouling capabilities for efficient wound healing" . | JOURNAL OF MATERIALS CHEMISTRY B 12 . 20 (2024) : 4909-4921 .
APA Jiang, Hongzhi , Huang, Xueping , Yang, Jiachao , Yu, Xunbin , Yang, Weibo , Song, Yunhao et al. Dual network composite hydrogels with robust antibacterial and antifouling capabilities for efficient wound healing . | JOURNAL OF MATERIALS CHEMISTRY B , 2024 , 12 (20) , 4909-4921 .
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Dual network composite hydrogels with robust antibacterial and antifouling capabilities for efficient wound healing EI
期刊论文 | 2024 , 12 (20) , 4909-4921 | Journal of Materials Chemistry B
Dual network composite hydrogels with robust antibacterial and antifouling capabilities for efficient wound healing Scopus
期刊论文 | 2024 , 12 (20) , 4909-4921 | Journal of Materials Chemistry B
Surface Oxygen Defect Engineering of A2B2O7 Pyrochlore Semiconductors Boosts the Electrocatalytic Reduction of CO2-to-HCOOH SCIE
期刊论文 | 2024 , 20 (38) | SMALL
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Abstract :

The electrocatalytic conversion of inert CO2 to value-added chemical fuels powered by renewable energy is one of the benchmark approaches to address excessive carbon emissions and achieve carbon-neutral energy restructuring. However, the adsorption/activation of supersymmetric CO2 is facing insurmountable challenges that constrain its industrial-scale applications. Here, this theory-guided study confronts these challenges by leveraging the synergies of bimetallic sites and defect engineering, where pyrochlore-type semiconductor A(2)B(2)O(7) is employed as research platform and the conversion of CO2-to-HCOOH as the model reaction. Specifically, defect engineering intensified greatly the chemisorption-induced CO2 polarization via the bimetallic coordination, thermodynamically beneficial to the HCOOH production via the *HCO2 intermediate. The optimal V-BSO-430 electrocatalyst with abundant surface oxygen vacancies achieved a superior HCOOH yield of 116.7 mmol h(-1) cm(-2) at -1.2 V-RHE, rivalling the incumbent similar reaction systems. Furthermore, the unique catalytic unit featured with a Bi-1-Sn-Bi-2 triangular structure, which is reconstructed by defect engineering, and altered the pathway of CO2 adsorption and activation to allow the preferential affinity of the suspended O atom in *HCO2 to H. As a result, V-BSO-430 gave an impressive FEHCOOH of 93% at -1.0 V-RHE. This study held promises for inspiring the exploration of bimetallic materials from the massive semiconductor database.

Keyword :

A(2)B(2)O(7) A(2)B(2)O(7) bimetallic sites bimetallic sites CO2 reduction CO2 reduction electrocatalysis electrocatalysis pyrochlore pyrochlore

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GB/T 7714 Zhao, Jiwu , Wang, Jiashun , Xue, Lan et al. Surface Oxygen Defect Engineering of A2B2O7 Pyrochlore Semiconductors Boosts the Electrocatalytic Reduction of CO2-to-HCOOH [J]. | SMALL , 2024 , 20 (38) .
MLA Zhao, Jiwu et al. "Surface Oxygen Defect Engineering of A2B2O7 Pyrochlore Semiconductors Boosts the Electrocatalytic Reduction of CO2-to-HCOOH" . | SMALL 20 . 38 (2024) .
APA Zhao, Jiwu , Wang, Jiashun , Xue, Lan , Wang, Ying , Wen, Na , Huang, Haowei et al. Surface Oxygen Defect Engineering of A2B2O7 Pyrochlore Semiconductors Boosts the Electrocatalytic Reduction of CO2-to-HCOOH . | SMALL , 2024 , 20 (38) .
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Surface Oxygen Defect Engineering of A2B2O7 Pyrochlore Semiconductors Boosts the Electrocatalytic Reduction of CO2-to-HCOOH Scopus
期刊论文 | 2024 , 20 (38) | Small
Surface Oxygen Defect Engineering of A2B2O7 Pyrochlore Semiconductors Boosts the Electrocatalytic Reduction of CO2-to-HCOOH EI
期刊论文 | 2024 , 20 (38) | Small
Highly selective photocatalytic reduction of CO2 to CH4 on electron-rich Fe species cocatalyst under visible light irradiation SCIE CSCD
期刊论文 | 2024 , 6 (1) | CARBON ENERGY
WoS CC Cited Count: 26
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Abstract :

Efficient photocatalytic reduction of CO2 to high-calorific-value CH4, an ideal target product, is a blueprint for C-1 industry relevance and carbon neutrality, but it also faces great challenges. Herein, we demonstrate unprecedented hybrid SiC photocatalysts modified by Fe-based cocatalyst, which are prepared via a facile impregnation-reduction method, featuring an optimized local electronic structure. It exhibits a superior photocatalytic carbon-based products yield of 30.0 mu mol g(-1) h(-1) and achieves a record CH4 selectivity of up to 94.3%, which highlights the effectiveness of electron-rich Fe cocatalyst for boosting photocatalytic performance and selectivity. Specifically, the synergistic effects of directional migration of photogenerated electrons and strong pi-back bonding on low-valence Fe effectively strengthen the adsorption and activation of reactants and intermediates in the CO2 -> CH4 pathway. This study inspires an effective strategy for enhancing the multielectron reduction capacity of semiconductor photocatalysts with low-cost Fe instead of noble metals as cocatalysts.

Keyword :

artificial synthesis of CH4 artificial synthesis of CH4 electronic structure optimization electronic structure optimization Fe species cocatalyst Fe species cocatalyst photocatalytic CO2 reduction photocatalytic CO2 reduction SiC SiC

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GB/T 7714 Lin, Qianying , Zhao, Jiwu , Zhang, Pu et al. Highly selective photocatalytic reduction of CO2 to CH4 on electron-rich Fe species cocatalyst under visible light irradiation [J]. | CARBON ENERGY , 2024 , 6 (1) .
MLA Lin, Qianying et al. "Highly selective photocatalytic reduction of CO2 to CH4 on electron-rich Fe species cocatalyst under visible light irradiation" . | CARBON ENERGY 6 . 1 (2024) .
APA Lin, Qianying , Zhao, Jiwu , Zhang, Pu , Wang, Shuo , Wang, Ying , Zhang, Zizhong et al. Highly selective photocatalytic reduction of CO2 to CH4 on electron-rich Fe species cocatalyst under visible light irradiation . | CARBON ENERGY , 2024 , 6 (1) .
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Highly selective photocatalytic reduction of CO2 to CH4 on electron-rich Fe species cocatalyst under visible light irradiation EI CSCD
期刊论文 | 2024 , 6 (1) | Carbon Energy
Highly selective photocatalytic reduction of CO2 to CH4 on electron-rich Fe species cocatalyst under visible light irradiation Scopus CSCD
期刊论文 | 2024 , 6 (1) | Carbon Energy
An Electron Bridge of Shared Atoms Mediated Cs3Bi2Br9/Bi2WO6 Z-Scheme Heterojunction for Photocatalytic CO2 Reduction SCIE
期刊论文 | 2024 , 16 (22) | CHEMCATCHEM
WoS CC Cited Count: 1
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Abstract :

Converting clean solar energy into chemical energy through artificial photosynthesis is an effective solution to solve the energy and environmental issues. Here, we report a Cs3Bi2Br9/Bi2WO6 (CBB/BWO) Z-scheme heterojunction constructed via electrostatic self-assembly, which facilitates efficient separation of photogenerated carriers and ensures the corresponding redox capacity of both components. By sharing Bi atoms, a Br-Bi-O bond is established between CBB and BWO, serving as an "electron bridge". The electrons generated by BWO are efficiently channeled to CBB through the heterojunction-formed "electron bridge", thereby achieving effective photocatalytic CO2 reduction. Under simulated sunlight conditions, it exhibits the highest CO yield of 72.52 mu mol g(-1) (without the addition of any precious metal, photosensitizers or sacrifices), which is approximately 7-fold and 18-fold greater than that of pure CBB and BWO, respectively. This work provides a more profound comprehension of the regulation of electron transfer through interfacial chemical bonds, thereby proposing a promising strategy for the development of efficient heterojunction photocatalysts for CO2 photoreduction.

Keyword :

Bi2WO6 Bi2WO6 CO2 reduction CO2 reduction Perovskite Perovskite Photocatalysis Photocatalysis Z-scheme Z-scheme

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GB/T 7714 Liu, Haolan , Sun, Jingjing , Lin, Qianying et al. An Electron Bridge of Shared Atoms Mediated Cs3Bi2Br9/Bi2WO6 Z-Scheme Heterojunction for Photocatalytic CO2 Reduction [J]. | CHEMCATCHEM , 2024 , 16 (22) .
MLA Liu, Haolan et al. "An Electron Bridge of Shared Atoms Mediated Cs3Bi2Br9/Bi2WO6 Z-Scheme Heterojunction for Photocatalytic CO2 Reduction" . | CHEMCATCHEM 16 . 22 (2024) .
APA Liu, Haolan , Sun, Jingjing , Lin, Qianying , Wang, Ying , Wang, Shuo , Wang, Shuowen et al. An Electron Bridge of Shared Atoms Mediated Cs3Bi2Br9/Bi2WO6 Z-Scheme Heterojunction for Photocatalytic CO2 Reduction . | CHEMCATCHEM , 2024 , 16 (22) .
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An Electron Bridge of Shared Atoms Mediated Cs3Bi2Br9/Bi2WO6 Z-Scheme Heterojunction for Photocatalytic CO2 Reduction Scopus
期刊论文 | 2024 , 16 (22) | ChemCatChem
An Electron Bridge of Shared Atoms Mediated Cs3Bi2Br9/Bi2WO6 Z-Scheme Heterojunction for Photocatalytic CO2 Reduction EI
期刊论文 | 2024 , 16 (22) | ChemCatChem
Superposition of dual electric fields in covalent organic frameworks for efficient photocatalytic hydrogen evolution SCIE
期刊论文 | 2024 , 63 , 164-175 | CHINESE JOURNAL OF CATALYSIS
WoS CC Cited Count: 2
Abstract&Keyword Cite Version(2)

Abstract :

Covalent organic frameworks (COFs) are promising materials for converting solar energy into green hydrogen. However, limited charge separation and transport in COFs impede their application in the photocatalytic hydrogen evolution reaction (HER). In this study, the intrinsically tunable internal bond electric field (IBEF) at the imine bonds of COFs was manipulated to cooperate with the internal molecular electric field (IMEF) induced by the donor-acceptor (D-A) structure for an efficient HER. The aligned orientation of IBEF and IMEF resulted in a remarkable H-2 evolution rate of 57.3 mmol center dot g(-1)center dot h(-1) on TNCA, which was approximately 520 times higher than that of TCNA (0.11 mmol center dot g(-1)center dot h(-1)) with the opposing electric field orientation. The superposition of the dual electric fields enables the IBEF to function as an accelerating field for electron transfer, kinetically facilitating the migration of photogenerated electrons from D to A. Furthermore, theoretical calculations indicate that the inhomogeneous charge distribution at the C and N atoms in TNCA not only provides a strong driving force for carrier transfer but also effectively hinders the return of free electrons to the valence band, improving the utilization of photoelectrons. This strategy of fabricating dual electric fields in COFs offers a novel approach to designing photocatalysts for clean energy synthesis. (c) 2024, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

Keyword :

Covalent organic framework Covalent organic framework Hydrogen evolution Hydrogen evolution Internal bond electric field Internal bond electric field Internal molecular electric field Internal molecular electric field Photocatalysis Photocatalysis

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GB/T 7714 Li, Chao , Wang, Shuo , Liu, Yuan et al. Superposition of dual electric fields in covalent organic frameworks for efficient photocatalytic hydrogen evolution [J]. | CHINESE JOURNAL OF CATALYSIS , 2024 , 63 : 164-175 .
MLA Li, Chao et al. "Superposition of dual electric fields in covalent organic frameworks for efficient photocatalytic hydrogen evolution" . | CHINESE JOURNAL OF CATALYSIS 63 (2024) : 164-175 .
APA Li, Chao , Wang, Shuo , Liu, Yuan , Huang, Xihe , Zhuang, Yan , Wu, Shuhong et al. Superposition of dual electric fields in covalent organic frameworks for efficient photocatalytic hydrogen evolution . | CHINESE JOURNAL OF CATALYSIS , 2024 , 63 , 164-175 .
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Superposition of dual electric fields in covalent organic frameworks for efficient photocatalytic hydrogen evolution Scopus
期刊论文 | 2024 , 63 , 164-175 | Chinese Journal of Catalysis
Superposition of dual electric fields in covalent organic frameworks for efficient photocatalytic hydrogen evolution EI
期刊论文 | 2024 , 63 , 164-175 | Chinese Journal of Catalysis
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