Article
Engineering, Environmental
Jiahui Chen, Munir Ahmad, Yan Zhang, Huangqing Ye, Lei Wang, Jiujun Zhang, Xian-Zhu Fu, Jing-Li Luo
Summary: Developing high-performance electrocatalysts is crucial for efficient methanol electro-reforming. In this study, a NiCoMo alloy pre-catalyst with nanosheets covered nanowires arrays is proposed, which undergoes surface reconstruction and forms a Mo substituted NiCoOOH layer as the real catalyst. The surface engineered catalysts exhibit high activity and stability, achieving efficient co-production of hydrogen and formate. The incorporation of Mo plays multiple roles in stabilizing the structure, promoting surface reconstruction, modulating electronic structure, and boosting catalytic activity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Kuanjian Zhang, Shaoxia Wang, Xinyue Li, Huihui Li, Yonghong Ni
Summary: In this work, a metastable Cu0.5Ni0.5 alloy with excellent performance for urea electrolysis was synthesized. The alloy showed good stability for hydrogen evolution reaction and rapid formation of NiOOH species during urea oxidation reaction. This work provides a simple and effective method for designing highly active bifunctional electrocatalysts for urea-supported water splitting.
Article
Chemistry, Multidisciplinary
Xing Ma, Hang Liu, Weijie Yang, Guangyang Mao, Lirong Zheng, Hai-Long Jiang
Summary: A general and facile strategy for the construction of high-loading single-atom catalysts with a tunable coordination microenvironment has been developed based on metal-organic frameworks. The well-accessible and atomically dispersed metal sites possess close proximity to photosensitive units, greatly accelerating charge transfer and promoting photocatalysis. The optimized Ni-1-S/MOF with a unique Ni(I) microenvironment presents excellent photocatalytic H-2 production activity, surpassing other counterparts.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Metallurgy & Metallurgical Engineering
Jian Tang, Ji-lin Xu, Liang-liang Li, Yong-cun Ma, Zhi-guo Ye, Hong-yu Luo, Jun-ming Luo
Summary: The Ni-MoO2 heterostructure electrode was synthesized on porous bulk NiMo alloy using a simple powder metallurgy and hydrothermal method. The electrode exhibited a heterostructure and a layer of Ni(OH)(2) nanosheets on its surface after hydrothermal treatment. The electrode had abundant interface and active sites, as well as a large specific surface area. The results showed that the Ni-MoO2 heterostructure electrode had excellent catalytic performance and long-term stability.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Chemistry, Physical
Min Sun, Qing Ye, Lu Lin, Yufeng Wang, Zongmin Zheng, Fangfang Chen, Yongliang Cheng
Summary: Developing a high-efficiency hydrogen evolution reaction (HER) electrocatalyst is essential for large-scale hydrogen production. In this study, NiMo solid-solution alloy porous nanofibers were used as a robust HER electrocatalyst, showing higher activity compared to Ni nanofibers. The NiMo nanofibers exhibited low overpotential and outstanding durability, making them a promising candidate for high-efficiency HER electrocatalysts and providing valuable information for manufacturing durable alloy-based electrocatalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Yun-Nan Gong, Jian-Hua Mei, Jin-Wang Liu, Hai-Hua Huang, Ji-Hong Zhang, Xiaokang Li, Di-Chang Zhong, Tong-Bu Lu
Summary: An exceptionally stable cerium metal-organic framework, Ce-TTCA, achieved photocatalytic hydrogen production in aqueous solutions of different pH levels by controlling the metal oxidation state. Partial oxidation of Ce3+ to Ce4+ in Ce-TTCA extended light absorption ability and promoted effective charge separation, significantly improving photocatalytic activity. This work highlights the crucial role of metal oxidation state in photocatalysis.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Multidisciplinary
Jiameng Liu, Linghao He, Zheng Tao, Sizhuan Li, Changbao Wang, Yinpeng Zhang, Shuai Zhang, Miao Du, Zhihong Zhang
Summary: A novel semiconductive Co/Fe-MOF embedded with Fe2O3 nanocrystals has been developed as a trifunctional electrocatalyst for urea oxidation reaction, oxygen evolution reaction, and hydrogen evolution reaction, enhancing the efficiency of hydrogen production via urea-assisted overall water splitting.
Article
Chemistry, Physical
Peishu Yang, Zhenyu Jiang, Yongzhi Shi, Xinyu Ren, Lisha Liang, Qingyi Shao, Kaigui Zhu
Summary: High entropy alloy thin film electrodes prepared by magnetron sputtering have a large number of defects and high entropy properties, which are beneficial for electrocatalytic oxygen evolution reaction (OER). However, their OER performance is limited without activation. In this study, in-situ reconstruction (chloride corrosion) is used to activate FeCoNiCrMn high entropy alloy thin film electrodes and improve their OER performance. The research shows that high entropy hydroxides and high entropy (oxy)hydroxides are generated on the surface of the electrodes during in-situ reconstruction, which are the real active centers of OER electrocatalysts. Moreover, there is a clear quantitative relationship among the elements on the surface of the high entropy alloy thin film electrodes after complex chloride corrosion reaction: Ni > Mn > Fe > Co > Cr. Additionally, the OER performance of the electrodes with in-situ reconstruction achieves an overpotential of 263 mV and a Tafel slope of 50.9 mVdec1. The sponge-like structures created by in-situ reconstitution increase the surface active areas, and the increased contents of high-valence elements after in-situ reconstruction contribute to the enhanced electrocatalytic OER activity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Qilong Liu, Wentuan Bi, Jiaqi Guan, Chong Xiao, Yi Xie
Summary: The research aims to address the rapid decay of high-performance catalysts for the hydrogen evolution reaction (HER) under intermittent working conditions. By depositing an NbOx overlayer on the NiMo electrode, the leaching of Mo species is effectively suppressed, improving the stability of the HER.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Hoyoung Kim, Hyanjoo Park, Dinh Son Tran, Soo-Kil Kim
Summary: Ni62Mo38 catalyst exhibits the highest HOR activity in 0.1 M KOH solution and shows improved performance after stability testing compared to previously reported non-precious HOR catalysts. This superior performance, attributed to structural properties and modified electronic structure, indicates its potential applicability to AEMFC.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Review
Chemistry, Applied
Yujing Liu, Guoyuan Sun, Xiaohan Cai, Fan Yang, Cong Ma, Min Xue, Xinyong Tao
Summary: Organic electrode materials have shown great potential for lithium-ion batteries, but face intrinsic problems such as poor electronic conductivity, high dissolution, and unstable chemical characteristics. Nanostructured strategies have been employed to enhance electron and ion transport and stability, gaining increasing attention and application in organic lithium-ion based energy storage.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Biotechnology & Applied Microbiology
Adnan Kadic, Aniko Varnai, Vincent G. H. Eijsink, Svein Jarle Horn, Gunnar Liden
Summary: Biochemical conversion of lignocellulosic biomass to sugars is hindered by high saccharifying enzyme costs. LPMOs offer potential solutions, but overdosing H2O2 can lead to enzyme inactivation. In this study, real-time monitoring of oxidation-reduction potential and H2O2 concentration allowed for predicting LPMO inactivation during enzymatic saccharification, potentially improving overall yields.
BIOTECHNOLOGY FOR BIOFUELS
(2021)
Article
Chemistry, Multidisciplinary
Xiao Lin, Yu-Cheng Huang, Zhiwei Hu, Lili Li, Jing Zhou, Qingyun Zhao, Haoliang Huang, Jian Sun, Chih-Wen Pao, Yu-Chung Chang, Hong-Ji Lin, Chien-Te Chen, Chung-Li Dong, Jian-Qiang Wang, Linjuan Zhang
Summary: This study reports a new class of catalyst, UO4, which enhances the electrocatalytic oxygen evolution reaction (OER) activity through electronic structure modulation among multiple metal sites. Experimental and theoretical calculations confirm that the active site of UO4 is Co, and the activity of Co3+/4+ is synergistically enhanced by the covalent bonding of U6+-5f in the U 5f-O 2p-Co 3d network.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Li Wang, Yutai Wu, Chaoyang Sun, Hui Wang, Jianwei Ren
Summary: The controlled growth of Cu2O crystals from nanocubes to nanopolyhedrons and then nanospheres was achieved in this study, with Cu2O nanospheres showing the best catalytic performance. The nanosphere-assembled electrode exhibited high sensitivity, a linear detection range, a low detection limit, and good selectivity for glucose oxidation, as well as a low onset potential, high energy density, and good stability for N2H4 oxidation. The characterization results suggested that the growth rate along the (111) facet in nanosphere Cu2O crystals favored their catalytic activities.
Article
Chemistry, Multidisciplinary
Wei Du, Yanmei Shi, Wei Zhou, Yifu Yu, Bin Zhang
Summary: It has been found that the Mo element in Ni4Mo alloy exhibits instability in alkaline water electrolyzer, enhancing the hydrogen evolution activity of metal Ni. Theoretical calculations and experimental results have shown that adding MoO42- to the electrolyte can repair the durability of the alloy and enhance the activity of cathodic materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Wei Du, Yanmei Shi, Wei Zhou, Yifu Yu, Bin Zhang
Summary: It has been found that the Mo element in Ni4Mo alloy exhibits instability in alkaline water electrolyzer, enhancing the hydrogen evolution activity of metal Ni. Theoretical calculations and experimental results have shown that adding MoO42- to the electrolyte can repair the durability of the alloy and enhance the activity of cathodic materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Bohang Zhao, Mengyao Sun, Fanpeng Chen, Yanmei Shi, Yifu Yu, Xingang Li, Bin Zhang
Summary: Fe2N@C nanoparticles show excellent performance in selective hydrogenation of CO2 to C2+ hydrocarbons, with in situ conversion to highly active iron carbides identified as the real active species. Experimental results suggest that carbonyl iron mediates the conversion mechanism from iron nitrides to iron carbides.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Shanshan Lu, Yanmei Shi, Wei Zhou, Zhipu Zhang, Fan Wu, Bin Zhang
Summary: The structural evolution of heteroatom-doped carbon materials during electrocatalysis, particularly under harsh oxygen evolution reaction (OER) conditions, has been neglected in previous research. This study reveals the dissolution of heteroatoms in N-, P-, and Se-doped carbon materials as high-valence oxoanions during OER, and identifies the ortho-quinone moieties in the oxygen-abundant residues as the active sites. Furthermore, the transformation of heteroatom-doped carbon materials as supporting substrates for metal-based composites leads to unexpectedly different activity origins.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Review
Chemistry, Physical
Jingfang Zhang, Hongjuan Zhang, Yongmeng Wu, Cuibo Liu, Yi Huang, Wei Zhou, Bin Zhang
Summary: The review introduces the unique properties of single-atom catalysts (SACs) and their applications in chemical transformations, focusing on thermal catalytic hydrogenation of organic compounds and electrocatalytic hydrogenation reactions. Future trends in the development of SACs in the fields of chemical engineering, energy, and environmental protection are also discussed.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Shanshan Lu, Wei Zhou, Yanmei Shi, Cuibo Liu, Yifu Yu, Bin Zhang
Summary: This study successfully develops a cheap and efficient acidic OER material by transforming inexpensive graphite flakes into functionalized graphite MEO-GP through MEO treatment. Multiple characterizations reveal that PQ-like moiety is the most active species for acidic OER.
Article
Multidisciplinary Sciences
Shuoshuo Guo, Yongmeng Wu, Changhong Wang, Ying Gao, Mengyang Li, Bin Zhang, Cuibo Liu
Summary: This article reports a method for the quinoline hydrogenation reaction using a fluorine-modified cobalt catalyst and water as the hydrogen source. The method achieves selective hydrogenation of quinolines at room temperature, with high yield and ease of operation. The fluorine-modified cobalt catalyst enhances the adsorption of quinolines and the activation of water, enabling the hydrogenation reaction through an addition pathway involving active hydrogen species (H*). The method has promising applications in various fields.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Fan Wu, Rong Yang, Shanshan Lu, Wei Du, Bin Zhang, Yanmei Shi
Summary: This work investigates the structural evolution of vacancies in electrocatalysts during electrocatalysis. Co9S8 nanosheets with abundant sulfur vacancies (SVs) were fabricated and characterized for enhanced alkaline hydrogen evolution reaction (HER). It was found that SVs can induce the formation of Co(OH)2, which synergistically enhances the HER activity in combination with residual SVs. The water dissociation promoted by Co(OH)2 and the favorable conductivity from the remaining SVs contribute to the high HER activity.
ACS ENERGY LETTERS
(2022)
Article
Multidisciplinary Sciences
Bingyi Lu, Biao Chen, Dashuai Wang, Chuang Li, Runhua Gao, Yingqi Liu, Rui Mao, Jinlong Yang, Guangmin Zhou
Summary: A bidirectional catalyst V-MoS2/Co9S8@CP has been designed, which vertically grows MoS2 and Co9S8 on carbon paper to provide abundant edge active sites, improve interfacial conductivity, and modulate electron transport along the basal planes. This catalyst shows superior performance in CO2RR and CO2ER compared to other catalysts. This work not only provides insights into the rational design of electronic contact in transition metal dichalcogenides with specified crystal facets, but also guides the design of high-performance cathodic catalysts in Li-CO2 batteries.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Multidisciplinary Sciences
Shanshan Lu, Chuanqi Cheng, Yanmei Shi, Yongmeng Wu, Zhipu Zhang, Bin Zhang
Summary: Heteroatom-doped carbon materials are widely used in electrocatalytic reduction reactions. However, their structural evolution and active origins are often ignored.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Biochemical Research Methods
Shanshan Lu, Bin Zhang, Yanmei Shi
Summary: The electrocatalytic behavior of carbon materials is closely related to the oxygen-containing groups, especially the phenanthrenequinone (PQ) moieties functionalized carbon materials, which are critical in the field of catalysis.
Article
Chemistry, Applied
Mengyang Li, Cuibo Liu, Yi Huang, Shuyan Han, Bin Zhang
Summary: A room-temperature electrochemical strategy using a bifunctional MoNi4 electrode has been developed for the hydrogenation and reverse dehydrogenation of N-heterocycles, achieving high efficiency and selectivity. The MoNi4 alloy exhibits superior water dissociation ability in alkaline media, enabling efficient hydrogenation reactions.
CHINESE JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Shuyan Han, Changhong Wang, Yanmei Shi, Cuibo Liu, Yifu Yu, Siyu Lu, Bin Zhang
Summary: The study developed a membrane-free oxidation reaction using nickel phosphide hollow nano-cubes as catalyst, enabling selective oxidation of thioethers to sulfoxides and sulfones with water as the oxygen source. In situ Raman data showed surface reconstruction of Ni2P to NiOOH, promoting the transformation via Ni-II/Ni-III redox couple. O-18-labeling experiments confirmed water as the source of oxygen, with a proposed cross-coupling mechanism of sulfur and hydroxyl radicals.
CELL REPORTS PHYSICAL SCIENCE
(2021)
