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Zhou X, Mukoyoshi M, Kusada K, Yamamoto T, Toriyama T, Murakami Y, Kitagawa H. Phase control of solid-solution RuIn nanoparticles and their catalytic properties. NANOSCALE 2024. [PMID: 38655766 DOI: 10.1039/d4nr00562g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
The properties of solids could be largely affected by their crystal structures. We achieved, for the first time, the phase control of solid-solution RuIn nanoparticles (NPs) from face-centred cubic (fcc) to hexagonal close-packed (hcp) crystal structures by hydrogen heat treatment. The effect of the crystal structure of RuIn alloy NPs on the catalytic performance in the hydrogen evolution reaction (HER) was also investigated. In the hcp RuIn NPs, enhanced HER catalytic performance was observed compared to the fcc RuIn NPs and monometallic Ru NPs. The intrinsic electronic structures of the NPs were investigated by valence-band X-ray photoelectron spectroscopy (VB-XPS). The d-band centre of hcp RuIn NPs obtained from VB-XPS was deeper than that of fcc RuIn NPs and monometallic Ru NPs, which is considered to enable the hcp RuIn NPs to exhibit enhanced HER catalytic performance.
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Affiliation(s)
- Xin Zhou
- Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan.
| | - Megumi Mukoyoshi
- Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan.
| | - Kohei Kusada
- Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan.
- The HAKUBI Center for Advanced Research, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
- JST-PRESTO, Honcho 4-1-8, Kawaguchi, Saitama 332-0012, Japan
| | - Tomokazu Yamamoto
- The Ultramicroscopy Research Center, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takaaki Toriyama
- The Ultramicroscopy Research Center, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yasukazu Murakami
- The Ultramicroscopy Research Center, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
- Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Hiroshi Kitagawa
- Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan.
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Kumar P, Maia G, Praserthdam S, Praserthdam P. Renovated FeCoP-NC nanospheres wrapped by CoP-NC nanopetals: As a tremendously effectual and robust MOF-assisted electrocatalyst for hydrogen energy production. ENVIRONMENTAL RESEARCH 2024; 246:118153. [PMID: 38191036 DOI: 10.1016/j.envres.2024.118153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 12/27/2023] [Accepted: 01/06/2024] [Indexed: 01/10/2024]
Abstract
The future of energy technology is significantly influenced by hydrogen (H2) energy. However, hydrogen energy production through water-splitting entirely depends on the catalyst's performance. Modifying the morphological structure and increasing the number of active sites by changing the metal composition are pivotal factors in enhancing the catalytic activity for the hydrogen evolution reaction (HER). In this context, we introduce the impact of metal-organic framework (MOF) strategies for decorating CoP petals onto α-Fe2O3 and FeCoP-NC (NC-nitrogen-doped carbon) nanoflowers. This method results in an excellent electrocatalyst for HER. The study demonstrated the influence of different MOF precursors, the impact of calcination temperatures, and the importance of composition percentages in Fe1-xCoxP-NC. As a result, FeCoP-NC shows excellent electrochemical performance potential (η) of 57 mV, a rapid kinetic Tafel value of 61 mV/dec, and remarkable electrochemical stability of around 2000 cycles and 20 h in stand potential. Additionally, the composite has numerous active surfaces at 4.7 mF/cm2 during the electrochemical reactions. This work concludes that MOF-assisted FeCoP-NC nanoflowers are an ideal electrocatalyst for HER in an alkaline medium.
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Affiliation(s)
- Premnath Kumar
- Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Gilberto Maia
- Institute of Chemistry, Federal University of Mato Grosso Do Sul, Av. Senador Filinto Muller, 1555, MS, Campo Grande, 79074-460, Brazil
| | - Supareak Praserthdam
- High-Performance Computing Unit (CECC-HCU), Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Chulalongkorn University, Bangkok, 10330, Thailand
| | - Piyasan Praserthdam
- Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand.
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He Q, Han L, Tao K. Oxygen vacancy modulated Fe-doped Co 3O 4 hollow nanosheet arrays for efficient oxygen evolution reaction. Chem Commun (Camb) 2024; 60:1116-1119. [PMID: 38189977 DOI: 10.1039/d3cc05581g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Herein, Fe-doped Co3O4 hollow nanosheet arrays with rich oxygen vacancies (Vo-Fe-Co3O4) are constructed using a facile strategy. Benefiting from the compositional and structural superiorities, Vo-Fe-Co3O4 exhibits a remarkable OER overpotential of 231 mV at 10 mA cm-2 and a Tafel slope of 57.45 mV dec-1 in an alkaline medium.
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Affiliation(s)
- Qianyun He
- School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China.
| | - Lei Han
- School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China.
| | - Kai Tao
- School of Materials Science & Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China.
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Yang S, Wen H, Liu Z, Zhai J, Yu Y, Li K, Huang Z, Sun D. Engineering Double Sulfur-Vacancy in CoS 1.097@MoS 2 Core-Shell Heterojunctions for Hydrogen Evolution in a Wide pH Range. Inorg Chem 2023; 62:17401-17408. [PMID: 37805930 DOI: 10.1021/acs.inorgchem.3c02732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Heterostructured nanomaterials have arisen as electrocatalysts with great potential for hydrogen evolution reaction (HER), considering their superiority in integrating different active components but are plagued by their insufficient active site density in a wide pH range. In this report, double sulfur-vacancy-decorated CoS1.097@MoS2 core-shell heterojunctions are designed, which contain a primary structure of hollow CoS1.097 nanocubes and a secondary structure of ultrathin MoS2 nanosheets. Taking advantage of the core-shell type heterointerfaces and double sulfur-vacancy, the CoS1.097@MoS2 catalyst exhibits pH-universal HER performance, achieving the overpotentials at 10 mA cm-2 of 190, 139, and 220 mV in 0.5 M H2SO4, 1.0 M KOH, and 1.0 M PBS, respectively. Systematic theoretical results show that the double sulfur-vacancy can endow the CoS1.097@MoS2 core-shell heterojunctions with promoted electron/mass transfer and enhanced reactive kinetics, thus boosting HER performance. This work clearly demonstrates an indispensable role of double sulfur-vacancy in enhancing the electrocatalytic HER performance of core-shell type heterojunctions under a wide pH operating condition.
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Affiliation(s)
- Shuting Yang
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, P. R. China
| | - Hao Wen
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, P. R. China
| | - Zhengyang Liu
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, P. R. China
| | - Junsheng Zhai
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, P. R. China
| | - Yanze Yu
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, P. R. China
| | - Kaiwen Li
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, P. R. China
| | - Zhaodi Huang
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, P. R. China
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, Shandong, P. R. China
| | - Daofeng Sun
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, Shandong, P. R. China
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Recent Trends in Electrochemical Catalyst Design for Hydrogen Evolution, Oxygen Evolution, and Overall Water Splitting. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Xing Y, Li N, Qiu S, Zhao G, Hao S, Zhang B. I nterfacial coupling of sea urchin-like (Mo4O11-MoS2-VO2) promoted electron redistributions for significantly boosted hydrogen evolution reaction. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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