Article
Engineering, Environmental
Baneesh Patial, Ajay Bansal, Renu Gupta, Susheel K. Mittal
Summary: In this study, BiVO4 and nanocomposites of BiVO4 with g-C3N4 were synthesized using hydrothermal technique and their properties were characterized. The results showed that the BiVO4/g-C3N4 composite had a higher degradation rate and better light absorption capacity for the degradation of imidacloprid under UV-C light. The composite catalyst also exhibited lower electron-hole recombination and good stability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Gohar Ali, Syed Jazib Abbas Zaidi, Muhammad Abdul Basit, Tae Joo Park
Summary: This study synthesized a ternary g-C3N4/rGO/SnO2 nanocomposite with excellent photocatalytic activity by effectively combining charge separation, multistep charge transfers, and higher visible-light absorbance. The nanocomposite demonstrated superior photocatalytic performance compared to pristine g-C3N4 and other composites due to the presence of a large number of nano/heterojunctions.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Libo Wang, Xingang Fei, Liuyang Zhang, Jiaguo Yu, Bei Cheng, Yuhua Ma
Summary: In this study, a photocatalyst with high light utilization was designed, and efficient CO2 reduction was achieved through biomimetic plant structure and heterojunction construction. It has great potential for practical applications and industrial utilization.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
H. Bahiraei, S. Azarakhsh, S. Ghasemi
Summary: This study investigates the photocatalytic activity of magnetic CoFe2O4/g-C3N4/ZnO (CF-gCN/ZnO) nanocomposite as a visible-light photocatalyst. The heterojunction CF-gCN/ZnO photocatalyst achieved a photodegradation efficiency of 89% for degradation of methylene blue (MB) after 100 min of irradiation. The formation of heterojunction structures at the interface of g-C3N4 and ZnO leads to improved photocatalytic activity due to the separation of the photo-generated electron-hole pairs.
CERAMICS INTERNATIONAL
(2023)
Article
Environmental Sciences
Mani Preeyanghaa, M. D. Dhileepan, Jagannathan Madhavan, Bernaurdshaw Neppolian
Summary: In this study, a novel g-CN/BiOBr/Fe(3)O(4) nanocomposite was prepared using a simplified method and evaluated for the photodegradation of model tetracycline antibiotics. The nanocomposite exhibited high degradation and mineralization efficiency under simulated light irradiation, thanks to its extended visible light harvesting ability and efficient charge separation. It also possesses magnetic retrievability and retains stable photocatalytic performance.
Article
Chemistry, Analytical
Shouli Bai, Kewei Zhang, Yingying Zhao, Qiangqiang Li, Ruixian Luo, Dianqing Li, Aifan Chen
Summary: The combination of semiconductor heterojunction with rGO has led to the successful synthesis of a ternary composite with high selectivity and rapid response to NO2. This improvement is attributed to effective electron transfer at the heterojunction interface and the increase in surface area and surface defects due to the introduction of rGO.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Ming Gao, Linlin Sun, Changchang Ma, Xin Li, Haopeng Jiang, Dong Shen, Huiqin Wang, Pengwei Huo
Summary: The Z-scheme g-C3N4/Ag3VO4/reduced graphene oxide (rGO) photocatalysts prepared by a hydrothermal process exhibit a unique 2D-0D-2D ternary sandwich structure, which enhances the separation and transmission capabilities of photogenerated carriers, leading to improved CO2 photoreduction efficiency.
INORGANIC CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Zhilin Wu, Xia Sun, Xuezheng Guo, Yanqiao Ding, Yi Ou, Han Yang, Yanhong Chen, Yanting Hu, Deilin Kuang, Chengjiu Zhao, Yong He
Summary: The impedance-type humidity sensor utilizing rGO-BiVO4 nanocomposite showed superior sensing performances, including excellent repeatability, fast response and recovery time, low power consumption, and anti-interference ability. The enhanced humidity performance is attributed to the formation of a heterojunction and the decrease of the heterojunction barrier height, as revealed by the complex impedance spectra and energy band structure analysis. The rGO-BiVO4 sensor is considered highly attractive for high-end humidity sensing applications due to its facile fabrication route, enhanced sensing performance, and excellent device reliability.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Environmental Sciences
Xiaoju Wang, Shanshan Hu, Haitao Mao, Xueyu Wei, Saraschandra Naraginti
Summary: Recently, there has been increasing attention on the development of efficient materials for degradation and detoxification of antibiotics in wastewater treatment. AgVO3, as a visible light active material, has been widely studied for environmental remediation. In this research, a novel heterojunction of AgVO3/rGO/BiVO4 was prepared through a hydrothermal method to improve its efficiency and stability. The results showed that the degradation efficiency of AgVO3/rGO/BiVO4 towards Norfloxacin (NFC) antibiotic was significantly higher compared to pure AgVO3 and BiVO4. The enhanced efficiency can be attributed to the formation of heterojunction and faster charge separation.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Physical
Mohamad Fakhrul Ridhwan Samsudin, Habib Ullah, Asif A. Tahir, Xiaohong Li, Yun Hau Ng, Suriati Sufian
Summary: This study compared the effectiveness of using RGO and GQDs as electron mediators in enhancing the photoelectrocatalytic hydrogen production of BiVO4/g-C3N4. It was found that incorporating GQDs led to significantly improved hydrogen performance, higher photocurrent density, and lower charge transfer resistance compared to RGO. The DFT analysis demonstrated that the enhanced performance with GQDs was due to better electronic cloud density sharing and charge redistribution at the heterostructure interface.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Shouli Bai, Jingyi Han, Kewei Zhang, Yingying Zhao, Ruixian Luo, Dianqing Li, Aifan Chen
Summary: A BiVO4/NiO/rGO photoanode was prepared using electrodeposition, solution immersion, and spin coating methods. It exhibits improved photocurrent density and onset potential compared to pure BiVO4 and binary BiVO4/NiO photoanode, thanks to the type-II heterojunction formation and rGO decoration that enhance electron/hole separation efficiency and provide more active sites.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Composites
Qingfeng Guo, Hongrui Sun, Liying Zhang, Dengxin Li
Summary: A novel large-scale recyclable cotton fabric-based rGO/BiVO4 photocatalytic nanocomposites were fabricated for dye degradation under visible light, showing high degradation efficiency and stability. The mechanism of improved photocatalytic properties of the nanocomposites was revealed through analysis of photocurrent response, electrochemical impedance spectroscopy, and electron spin resonance. This kind of fabric-based photocatalytic nanocomposites are expected to have broad applications in wastewater treatment.
COMPOSITES COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Zikang Zeng, Kai Li, Tao Yuan, Yujun Liang, Jian Yang, Gui Yang, Kun Wang, Zhuoran Xiong
Summary: BiOCl/g-C3N4 (BC) heterojunctions were successfully constructed through a novel in situ hydrolysis method, using metallic Bi nanospheres as Bi source. The heterojunction showed excellent performance in light absorption range and photocatalytic activity, particularly in degrading organic pollutants under visible light irradiation.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Keren Shi, Guangyan Qian, Yueyue Kong, Mingming Li, Yuxiang Xiang, Huiqin Yao
Summary: The MCM-48/ZnFe2O4/BiOBr (MZBB) heterojunction photocatalyst was used to decompose rhodamine B (RhB) under visible light. The compound semiconductor degraded RhB by 99.03% after 60 min at a concentration of 40 mg/L and pH 6.0, with a total organic carbon (TOC) mineralization rate of 0.0631. The combination of n-type ZnFe2O4 and BiOBr improved the photocatalytic performance of the MCM-48/ZnFe2O4/ BiOBr composite, and the presence of n-n junctions promoted the separation of photogenerated carriers and prolonged recombination time.
SURFACES AND INTERFACES
(2023)
Article
Engineering, Environmental
Yi-Hsuan Lai, Pei -Wen Yeh, Meng-Jyun Jhong, Ping -Chang Chuang
Summary: Production of sustainable H2 fuel by photoreforming plastic waste is an emerging approach to address environmental pollution and energy shortage. The use of a n-p heterojunction g-C3N4/CuFeO2 photocatalyst made of earth-abundant elements effectively suppresses charge recombination and shows promising performance in photoreforming various types of polyester plastics.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Tianxiang Liu, Fei Xue, Bin Wang, Rui Wang, Wei Cao, Xiuli Zhao, Yu Xia, Weiwei Jin, Yonghong Zhang, He Lin, Chenjiang Liu
Summary: Selective synthesis of ketones with medicinal value through C=C bond cleavage is crucial. However, expensive reagents and harsh conditions are often essential for this synthesis method. Herein, a green and efficient method is proposed to obtain ketones through visible light promoted aerobic oxidative cleavage of C=C bonds of alkenes in micellar medium. The Bi2WO6 photocatalyst can be reused several times and maintain high catalytic activity, and the reaction mechanism involves holes, electrons, and superoxide radicals. The feasibility of photocatalytic oxidation cleavage of the C=C double bond to prepare ketones is confirmed by density functional theory (DFT) calculations. (c) 2022 Elsevier Inc. All rights reserved.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Applied
Ruige Wang, Jie Wang, Yonghong Zhang, Bin Wang, Yu Xia, Fei Xue, Weiwei Jin, Chenjiang Liu
Summary: In this report, a transition-metal-catalyst- and external-oxidant-free electrochemical cross-coupling hydrogen-evolution chemistry using glycine amides and diarylphosphine oxides was developed. Biologically active alpha-aminophosphonates were obtained in moderate to good yields in a clean and sustainable manner. The TBAB (tetrabutylammonium bromide) electrolyte could be recycled four times without noticeable reduction in reaction activity. Control experiments were conducted to reveal a possible free-radical mechanism.
ADVANCED SYNTHESIS & CATALYSIS
(2023)
Article
Chemistry, Organic
Bin Wang, Yun Feng, Yuepan Zhang, Shoucai Wang, Xinlei Zhou, Ziren Chen, Yu Xia, Weiwei Jin, Azhar Iqbal, Chenjiang Liu, Yonghong Zhang
Summary: A photo-induced direct arylation reaction of quinoxalin-2(1H)-ones with aryltriazenes has been developed under catalyst-free and ambient conditions. The synthetic importance of this methodology was demonstrated by its simple operation, excellent functional group tolerance, and gram-scale synthesis.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Organic
Jianan Gao, Qinglang Song, Lin Zhang, Junhao Shao, Bin Wang, Azhar Iqbal, Weiwei Jin, Yu Xia, Chenjiang Liu, Yonghong Zhang
Summary: A palladium-catalyzed direct C-H arylation of indolines at C-7 position has been achieved at near-ambient temperature. The reaction utilizes aryltriazene as a stable aryl source and electron shuttle, pyrimidine as a detachable directing group, and proceeds under oxidant- and ligand-free conditions. This catalytic system also allows for direct and site-selective arylation of tetrahydroquinolines (C-8) and carbazoles (C-1).
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Jie Wang, Yonghong Zhang, Bin Wang, Yu Xia, Fei Xue, Weiwei Jin, Chenjiang Liu
Summary: A simple and efficient electrooxidative Hofmann rearrangement reaction was developed for the synthesis of anthranilate derivatives. This approach not only provides moderate to good yields under green and mild conditions, but also allows for efficient conversion on a gram scale.
Article
Chemistry, Multidisciplinary
Renjie Wang, Nana Zhang, Yonghong Zhang, Bin Wang, Yu Xia, Kai Sun, Weiwei Jin, Xinyong Li, Chenjiang Liu
Summary: Here, we present a general and environmentally friendly electrochemical method for amino- and oxyselenation of alkenes without the use of transition-metal catalysts or additional oxidants. This electrocatalytic difunctionalization reaction demonstrates high chemoselectivity and can be applied to a wide range of substrates with various functional groups. We synthesized selenation products from diverse alkenes, including challenging 1-aryl-1,3-dienes, unactivated aliphatic alkenes, and N- or O-centered nucleophiles. Mechanistic studies were conducted and the practical utility of this approach was demonstrated through gram-scale synthesis and late-stage modification of bioactive molecules.
Article
Chemistry, Organic
Lin Zhang, Jianan Gao, Bin Wang, Azhar Iqbal, Weiwei Jin, Yu Xia, Yonghong Zhang, Chenjiang Liu
Summary: We developed a metal-free and mild protocol for the direct arylation of indole at the C2 position using an imine transient directing group. The method involves the in situ generation of transient imine directing groups, followed by C2 arylation of indoles with aryl radicals. This strategy is characterized by its simplicity and absence of auxiliary groups.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Xuemei Liu, Chaonan Cui, Shuoshuo Wei, Jinyu Han, Xinli Zhu, Qingfeng Ge, Hua Wang
Summary: This study presents a new strategy for designing efficient photocatalysts that can convert CO2 into hydrocarbons by utilizing synergistic catalytic sites. The findings provide a solution for the selective photocatalytic reduction of CO2 to CH4.
Article
Chemistry, Multidisciplinary
Chengxian Hu, Dan Wang, Lu Wang, Ying Fu, Zhengyin Du
Summary: A novel one-pot, three-component reaction conducted under electrochemical conditions was studied. The reaction involved 2-aminothiophenols, aldehydes, and malononitrile, using TBABF4 as an electrolyte and CuI as a catalyst. The proposed reaction mechanism suggested that CuI served as an electron relay. This method offers simplified operation, high atom economy, and mild reaction conditions.
Article
Chemistry, Multidisciplinary
Zhi Yang, Yu Chen, Linxi Wan, Yuxiao Li, Dan Chen, Jianlin Tao, Pei Tang, Fen-Er Chen
Summary: A highly enantioselective method for the complete hydrogenation of pyrimidinium salts using Ir/(S,S)-f-Binaphane complex as the catalyst was developed. This method provides easy access to fully saturated chiral hexahydropyrimidines, which are prevalent in many bioactive molecules. The reactions exhibit high yields and enantioselectivities under mild reaction conditions without additives. Successful application of this methodology in a continuous flow fashion further extends its practical utility.
Article
Chemistry, Multidisciplinary
Tina Jeoh, Jennifer Danger Nill, Wujun Zhao, Sankar Raju Narayanasamy, Liang Chen, Hoi-Ying N. Holman
Summary: In this study, the enzymatic hydrolysis of cellulose was investigated using real-time infrared spectromicroscopy. The spatial heterogeneity of cellulose was found to impact the hydrolysis kinetics. Hydration affected cellulose ordering, and Cel7A preferentially removed less extensively hydrogen bonded cellulose.
Article
Chemistry, Multidisciplinary
Tiphaine Richard, Walid Abdallah, Xavier Trivelli, Mathieu Sauthier, Clement Dumont
Summary: An effective method of grafting functionalities onto lignin based on glycerol carbonate has been developed using an efficient nickel-catalysed telomerisation reaction. This method allows lignin to have new reactive functions and reduces the glass transition temperatures of modified lignins, thereby expanding the application range of lignin-based resins.
Article
Chemistry, Multidisciplinary
Jing Qi, Xiyan Wang, Gan Wang, Srinivas Reddy Dubbaka, Patrick ONeill, Hwee Ting Ang, Jie Wu
Summary: This study presents a green and environmentally friendly approach for the synthesis of imides using electrocatalytic oxidation with H2O as the oxygen source. The method eliminates the need for toxic or expensive oxidants and achieves high yields under mild reaction conditions. It shows broad substrate compatibility and potential for industrial applications.
Article
Chemistry, Multidisciplinary
Babasaheb Sopan Gore, Lin-Wei Pan, Jun-Hao Lin, Yi-Chi Luo, Jeh-Jeng Wang
Summary: Here, we report a visible light-promoted intramolecular radical cascade reaction for the construction of fluorenol and naphthalene-fused cyclopropyl carbaldehyde derivatives. This method offers mild reaction conditions, a broad substrate scope, excellent step efficiency, and scalability, without the need for external chemical oxidants. The novelty of this protocol was demonstrated by synthesizing chrysene analogs and performing late-stage functionalizations.
Article
Chemistry, Multidisciplinary
Juho Antti Sirvio, Idamaria Romakkaniemi, Juha Ahola, Svitlana Filonenko, Juha P. Heiskanen, Ari Ammala
Summary: This article discusses the method of using supramolecular interaction between an aromatic hydrogen bond donor and lignin to achieve rapid delignification of softwood at low temperatures.
Article
Chemistry, Multidisciplinary
Yunyan Meng, Chunxiang Pan, Na Liu, Hongjiang Li, Zixiu Liu, Yao Deng, Zixiang Wei, Jianbin Xu, Baomin Fan
Summary: A novel visible light-driven synthesis method for 2,3-diamines has been developed, which has mild conditions, avoids the use of metal reagents, and can synthesize diamines and diols in one pot.
Article
Chemistry, Multidisciplinary
Mingqing Huang, Haiyang Huang, Mengyao You, Xinxin Zhang, Longgen Sun, Chao Chen, Zhichao Mei, Ruchun Yang, Qiang Xiao
Summary: A direct air-oxidized strategy for the synthesis of benzo[b]phosphole oxides was developed in this study. Arylphosphine oxides were transformed into phosphinoyl radicals, which were further combined with various alkynes to achieve the desired products. DFT calculations revealed the mechanism of phosphinoyl radical formation.
Article
Chemistry, Multidisciplinary
Anwei Wang, Jiayin Huang, Chunsheng Zhao, Yu Fan, Junfeng Qian, Qun Chen, Mingyang He, Weiyou Zhou
Summary: This study demonstrates an innovative strategy for the aerobic oxidation of C(sp(3))-H bonds using gamma-valerolactone. By optimizing the reaction conditions and utilizing specific catalysts, efficient oxidation of C(sp(3))-H bonds is achieved with good chemoselectivity in certain cases.
Article
Chemistry, Multidisciplinary
Shun Li, Likai Tong, Zhijian Peng, Bo Zhang, Xiuli Fu
Summary: Sulfide compounds show promise as electrocatalysts for water splitting, but their performance is limited by factors such as limited active sites and hindered substance transport. This study successfully prepared a high-entropy sulfide (ZnCoMnFeAlMg)(9)S-8, which reduced grain size and increased specific surface area, enabling the realization of a dual-functional catalyst with multiple catalytic sites. High entropy also modulated the electronic properties of sulfides, reducing the potential energy barrier for hydrolysis. This research introduces a new approach for functionalizing high entropy nanomaterials and improves the performance of water splitting catalysts.
