Article
Engineering, Chemical
Jingjing Zhou, Hong Sui, Jun Ma, Xingang Li, Nabil H. A. Al-Shiaani, Lin He
Summary: The researchers have developed a novel amphiphilic magnetic demulsifier that can efficiently separate oil-water emulsions in a short period of time, showing promising applications in various industrial and environmental processes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Inorganic & Nuclear
Bo Han, Chunping Ren, Lipeng Wu
Summary: Hydrodehalogenation is a straightforward method for removing harmful organohalides by substituting the halogen atom with a hydrogen atom. This study presents a catalytic system using Cp2TiCl2 as the catalyst and ammonia-borane as the reductant. Various benzyl halides and inactivated alkyl halides (including alkyl chlorides) successfully underwent hydrodehalogenation to yield the desired products with up to 97% yield (43 examples).
Article
Chemistry, Physical
Radha Bhardwaj, Arnab Hazra
Summary: In this study, MoSe2 nanoflowers were synthesized through a one-step hydrothermal method, and their surface functionality was effectively modulated by purging different oxygen concentrations. The MoSe2 sensor treated with 2.5% O2 showed enhanced response towards xylene and had a lower detection limit. The selective detection of xylene was attributed to the improved surface reaction sites and catalytic behavior of MoSe2 after oxygen functionalization.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Organic
Xing-Wei Gu, Xiao-Feng Wu
Summary: Transition metal-catalyzed carbonylation of alkyl halides is an efficient method for synthesizing aliphatic carbonyl-containing compounds. This paper discusses recent developments in the carbonylation reactions of alkyl bromides and chlorides catalyzed by abundant metals.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Multidisciplinary Sciences
Pengfei Li, Chengcheng Guo, Siyi Wang, Dengke Ma, Tian Feng, Yanwei Wang, Youai Qiu
Summary: We reported a facile and general method for electroreductive deuteration of unactivated alkyl halides or pseudo-halides using D2O as the deuterium source. This method works well for various alkyl halides, including sterically hindered tertiary chlorides, and achieves high deuterium incorporation in organic synthesis.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Basil Raju Karimadom, Dan Meyerstein, Amir Mizrahi, Haya Kornweitz
Summary: The dehalogenation reaction mechanism of CH3X (X = Br, Cl) on Ag(111) and Au(111) surfaces is explored computationally. It is found that CH3X species are more strongly adsorbed on the Au(111) surface than on the Ag(111) surface due to increased charge transfer. The presence of water or pre-adsorbed *H atoms on the Ag(111) and Au(111) surfaces can lead to the release of CH4. The kinetics of CH3X dehalogenation is significantly affected by the presence of co-adsorbents, mainly charged co-adsorbates, which alter the electronic charge of the surface. Ag(111) is a more promising catalyst for CH3X dehalogenation than Au(111).
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Zhenglong Hu, Lun Tan, Xingxing Fu, Yijing Fan, Meng Sun, Di Zhou, Zhao Wang, Zeping Li, Siliu Xu, Haoshaung Gu
Summary: A room-temperature semiconductor formaldehyde gas sensor with fast response and high selectivity was developed by decorating MoO3 nanoribbons with Au nanoparticles. The surface decoration greatly improved the response and recovery speed of the sensors at room temperature. The sensor exhibited high sensitivity and selective response to formaldehyde as well as other volatile organic compounds.
RESULTS IN PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Wenzhang Xiong, Qiu Shi, Wenbo H. Liu
Summary: An efficient and practical approach to prepare phenols from benzoic acids using simple organic reagents at room temperature is reported. This method is compatible with various functional groups and heterocycles and can be easily scaled up.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Hugo Hartl, Kostya (Ken) Ostrikov, Jennifer MacLeod
Summary: Cuprous halide films can be formed at room temperature and atmospheric pressure using a plasma-based approach, exhibiting a hierarchical nanostructure and versatile applications in sensing, batteries, and photovoltaics.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Organic
Mimi Xing, Huanhuan Cui, Chun Zhang
Summary: A novel nickel-catalyzed reductive cross-coupling method has been developed for constructing C-Si bonds under mild reaction conditions, allowing for the synthesis of structurally diverse organosilanes without Ni-catalyzed isomerization. The utility of this chemistry is demonstrated through further transformations of the product, while the radical mechanism of the reaction is elucidated through control experiments.
Article
Engineering, Environmental
Yongjiao Sun, Baoxia Wang, Yuchen Hou, Koichi Suematsu, Zhenting Zhao, Wendong Zhang, Kengo Shimanoe, Jie Hu
Summary: This study presents a conductive 2D metal-organic framework Co3(HITP)2 for hydrogen sulfide sensing at room temperature, which shows high sensitivity and selectivity under different humidity. The gas sensing performance of Co3(HITP)2 is further improved by embedding catalytic Pd, Au, and Pt nanoparticles. However, the sensors functionalized with noble metal nanoparticles are influenced by humid atmosphere due to water vapor adsorption on Co3(HITP)2.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Cheng-Long Ji, Xinyi Zhai, Qing-Yun Fang, Chengjian Zhu, Jie Han, Jin Xie
Summary: In recent years, the activation of unactivated alkyl chlorides through light-induced processes has become a promising field in radical chemistry, allowing for the easy construction of carbon-carbon and carbon-heteroatom bonds. Recent studies in medicinal chemistry show that their presence is associated with high success rates in clinical trials. This review summarizes the recent advances in the photoinduced activation of unactivated alkyl chlorides and discusses the underlying mechanistic aspects, aiming to inspire developments in organic chemistry, drug synthesis, materials science, and related disciplines.
CHEMICAL SOCIETY REVIEWS
(2023)
Article
Engineering, Environmental
Yuan-Yue Lu, Xiao-Li Wang, Lei-Lei Wang, Wen Zhang, Jinjian Wei, Jin-Ming Lin, Ru-Song Zhao
Summary: The novel Fe3O4@[NH2]-COFs showed excellent enrichment capacity for capturing ultratrace PFAAs from water samples due to the synergistic combination of hydrophobic and electrostatic interactions. The hybridized method of MSPE with Fe3O4@[NH2]-COFs and HPLC-MS/MS exhibited favorable linearity, low limits of detection, and successful application in determining PFAAs in real water samples.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Syedvali Pinjari, Tapan Bera, G. S. Kapur, Erik Kjeang
Summary: The effect of acid functionalization of multiwalled carbon nanotubes (MWCNTs) on hydrogen storage at room temperature was investigated. Functionalized CNT samples were synthesized and characterized, and hydrogen storage measurements were conducted. Acid functionalization led to significant changes in the physicochemical properties of the CNTs due to varying oxygen functional group concentrations. The H2SO4:HNO3 functionalized sample at 100 degrees C showed the highest interlayer spacing, oxygen to carbon ratio, defect content, and specific surface area. These features contributed to a substantial improvement in hydrogen storage capacity, with a 150% increase at 298 K and 50 bar. Kinetic analysis revealed a multiple diffusion process for desorption, controlled by oxygen functional groups and structural defects, while adsorption followed a more rapid, three-dimensional diffusion process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Angela Burhenn, Roberta Bavaro, Viktoria H. Gessner
Summary: In this study, a series of chloro- and polyhalogenated compounds, including polychlorinated biphenyls (PBCs) extracted from construction dust, were successfully dehalogenated under mild reaction conditions using palladium complexes with ylide-substituted phosphines (YPhos) as ligands. Ethanol was used as the hydride source in the reaction, and site-selective deuterations could be achieved by switching to deuteroethanol.
CATALYSIS SCIENCE & TECHNOLOGY
(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.