Article
Chemistry, Multidisciplinary
Zhi-Yu Liang, Ren-Kun Huang, Ruo-Wen Liang, Dan-Hua Xie, Gui-Yang Yan
Summary: This study demonstrates that direct Z-scheme ZnIn2S4/WO3 photocatalysts exhibit significantly enhanced photocatalytic activities due to efficient separation of photogenerated electrons and holes. The in situ self-assembly method used for the fabrication of these heterostructured nanocomposites shows potential for practical applications.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Applied
Cristian H. Campos, Krishnamoorthy Shanmugaraj, Tatiana M. Bustamante, Edgardo Leal-Villarroel, Victor Vinoth, Radhamanohar Aepuru, Ramalinga Viswanathan Mangalaraja, Cecilia C. Torres
Summary: Pt-nanoparticles supported on halloysite-nanotubes were selectively deposited onto the inner or outer surface to evaluate their stability and catalytic performance for hydrogenation reactions. Pt(IN)/HNT catalyst showed better performance and stability compared to Pt(OUT)/HNT, with the latter retaining catalytic activity after 15 cycles.
Article
Chemistry, Multidisciplinary
Shilei Yang, Min He, Yi Wang, Ming Bao, Xiaoqiang Yu
Summary: An efficient visible-light-induced iron-catalyzed reduction of nitroarenes to anilines proceeds with photosensitizer-free conditions, and features good to excellent yields and broad functional group tolerance. Preliminary mechanistic investigations showed that this reaction was conducted via ligand-to-metal (NEM to Fe3+) charge transfer and nitro triplet biradical-induced hydrogen atom transfer processes.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Siqi Li, Zhipeng Huang, Huifang Liu, Meijiang Liu, Chaofeng Zhang, Feng Wang
Summary: An efficient approach for the synthesis of arylamines from nitroarenes and hydrazine using an iron-molybdenum sulfide catalyst has been presented. The study reveals that the reduction of the nitro group to the nitroso group is the rate-determining step, and it is confirmed that the active H* should be in polar states.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Organic
Xingwei Cai, Yang Shen, Wei Li, Wentao Zhan, Fanjun Zhang, Chen Xu, Heng Song
Summary: In this study, an efficient tungsten-catalyzed homogeneous system was developed for the selective synthesis of various azoaromatics, azoxyaromatics, and 2-substituted indolone N-oxides from anilines. This was achieved by regulating the reaction solvent with peroxide as a terminal oxidant under additive-free conditions. These findings not only provide an experimental framework for exploring tungsten catalysis in organic synthesis but also offer an efficient and convenient tactic for the selective oxidation of anilines.
Article
Chemistry, Organic
Ujjwal Karmakar, Ho Seong Hwang, Yunjeong Lee, Eun Jin Cho
Summary: Visible-light-induced para-selective C-H functionalization of anilines through N-H insertion was achieved using diazomalonates with the assistance of an Ir(III) photocatalyst. The para-selective radical-radical cross coupling occurred through C-centered radical intermediates generated from both anilines and diazomalonates. This reaction could also be extended to other N-heterocycles such as indole and carbazole, and its reaction pathway was validated through electrochemical and photophysical experiments as well as computational studies.
Article
Chemistry, Multidisciplinary
Bo Su, Yuehua Kong, Sibo Wang, Shouwei Zuo, Wei Lin, Yuanxing Fang, Yidong Hou, Guigang Zhang, Huabin Zhang, Xinchen Wang
Summary: The study successfully synthesized an infrared-ignited photocatalyst with efficient CO2 conversion activity on the TiN surface using Ru species, which achieved CO2 polarization and activation through the formation of surface HO-RuN5-Ti Lewis pair sites, and significantly enhanced the separation and transfer of photoinduced charges.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Sheng Han, Ying Cheng, Shanshan Liu, Chaofu Tao, Aiping Wang, Wanguo Wei, Han Yu, Yongge Wei
Summary: The study reported a molybdenum oxide compound catalyzed selective oxidation of anilines with hydrogen peroxide as green oxidant, leading to the synthesis of aromatic azo compounds. The use of stoichiometric metal oxidants was avoided and fully selective synthesis of products was achieved. Preliminary mechanistic investigations suggested the intermediacy of highly active reactive and elusive Mo imido complexes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Zexu Fang, Ying Gu, Xinran Dong, Gen Zhang, Lin Li, Xiaoguang Zhou, Chungui Tian
Summary: This study reports the design of two-dimensional porous Ni-Ni3N-NiMoN heterojunction sheets for efficient catalytic hydrogenation of aromatic nitro-compounds. The heterojunction interfaces provide plentiful active sites to improve the catalyst's ability in activating the reactants. The 2D porous structure facilitates contact with reactants, mass transfer, and diffusion, which accelerates the hydrogenation process.
CHINESE CHEMICAL LETTERS
(2023)
Article
Multidisciplinary Sciences
Alejandro Prats Lujan, Mohammad Faizan Bhat, Sona Tsaturyan, Ronald van Merkerk, Haigen Fu, Gerrit J. Poelarends
Summary: The selective enzymatic reduction of nitroaliphatic and nitroaromatic compounds is challenging. In this study, the authors demonstrate the light-powered, selective photoenzymatic synthesis of aliphatic amines and amino-, azoxy- and azo-aromatics using flavin-dependent nitroreductases and chlorophyll as photocatalyst.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Yuqing Chi, Shuyi Zheng, Xiangwen Zhang, Guozhu Li
Summary: Selective hydrogenation of nitroarene to aniline is a key reaction for fine chemical, pharmaceutical, and dye manufacturing. N-doped carbon nanotubes catalysts were prepared and optimized for improved catalytic performance. The catalyst showed high activity, selectivity, and stability for various substrates.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Athanasios D. Stergiou, Mark D. Symes
Summary: An electrocatalytic route for the production of anilines has been reported, which works in aqueous solution and shows good environmental sustainability. The approach relies on the use of a polyoxometalate redox mediator to prevent unproductive side reactions.
CELL REPORTS PHYSICAL SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Bo Cui, Changyuan Gao, Jiating Fan, Jinni Liu, Bin Feng, Xianghui Ruan, Yajie Yang, Ye Yuan, Kuo Chu, Zhuojun Yan, Lixin Xia
Summary: A luminescent porous aromatic framework material (LNU-23) was synthesized in this study, which exhibited excellent light and heat stability. The energy transfer technique in LNU-23 allowed for selective fluorescence quenching of nitro compounds, making it a potential candidate for outdoor fluorescence detection.
Article
Environmental Sciences
Christian Mark Garcia Salvador, Rongzhi Tang, Michael Priestley, Linjie Li, Epameinondas Tsiligiannis, Michael Le Breton, Wenfei Zhu, Limin Zeng, Hui Wang, Ying Yu, Min Hu, Song Guo, Mattias Hallquist
Summary: Nitro-aromatic compounds (NACs) were measured hourly in a rural site in China during wintertime. The study found that NACs may significantly contribute to the radiative forcing effects of atmospheric particles. Additionally, gas-phase NAC levels were highest during the daytime, and regional secondary processes played a significant role in NAC concentrations.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Xinran Dong, Zexu Fang, Ying Gu, Xiaoguang Zhou, Chungui Tian
Summary: In this study, two-dimensional Cu-CuO heterojunction nanosheets (2D Cu-CuO NS) were synthesized via a designed method using 3-aminopropyl-triethoxysilane (APTES) as the ligand and alkali source. The APTES-guided synthesis allowed for the formation of small-sized Cu-CuO heterojunction sheets with plentiful active sites. The 2D Cu-CuO NS exhibited superior catalytic performance for the reduction of nitro compounds and showed good recyclability after 10 consecutive catalysis.
CHINESE CHEMICAL LETTERS
(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.