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Xi Q, Xie F, Sun Z, Liu J, Zhang X, Wang Y, Zhou A, Ma X, Gao X, Yue X, Ren J, Fan C, Jian X, Li R. NiRu-Mo 2Ti 2C 3O 2 as an efficient catalyst for alkaline hydrogen evolution reactions: the role of bimetallic site interactions in promoting Volmer-step kinetics. Phys Chem Chem Phys 2024; 26:7166-7176. [PMID: 38349087 DOI: 10.1039/d3cp05892a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
The Volmer step in alkaline hydrogen evolution reactions (HERs), which supplies H* to the following steps by cleaving H-O-H bonds, is considered the rate-determining step of the overall reaction. The Volmer step involves water dissociation and adsorbed hydroxyl (*OH) desorption; Ru-based catalysts display a compelling water dissociation process in an alkaline HER. Unfortunately, the strong affinity of Ru for *OH blocks the active sites, resulting in unsatisfactory performance during HER processes. Hence, this study investigates a series of key descriptors (ΔG*H2O, ΔG*H-OH, ΔG*H, and ΔG*OH) of TM (Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, or Pt)-Ru/Mo2Ti2C3O2 to systematically explore the effects of bimetallic site interactions on the kinetics of the Volmer step. The results indicate that bimetallic catalysts effectively reduced the strong adsorption of *OH on Ru sites; especially, the NiRu diatomic state shows the highest electron-donating ability, which promoted the smooth migration of *OH from Ru sites to Ni sites. Therefore, Ru, Ni and MXenes are suitable to serve as water adsorption and dissociation sites, *OH desorption sites, and H2 release sites, respectively. Ultimately, NiRu/Mo2Ti2C3O2 promotes Volmer kinetics and has the potential to improve alkaline HERs. This work provides theoretical support for the construction of synergistic MXene-based diatomic catalysts and their wide application in the field of alkaline HERs.
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Affiliation(s)
- Qing Xi
- Shanxi Key Laboratory of Compound Air Pollutions Identification and Control, College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China.
- Key Laboratory of Coal Science and Technology, Ministry of Education, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Fangxia Xie
- Shanxi Key Laboratory of Compound Air Pollutions Identification and Control, College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China.
- Key Laboratory of Coal Science and Technology, Ministry of Education, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Zijun Sun
- Xi'an North Huian Chemical Industries Co. Ltd, Xi'an 710302, P. R. China
| | - Jianxin Liu
- Key Laboratory of Coal Science and Technology, Ministry of Education, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Xiaochao Zhang
- Key Laboratory of Coal Science and Technology, Ministry of Education, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Yawen Wang
- Key Laboratory of Coal Science and Technology, Ministry of Education, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Aijuan Zhou
- Shanxi Key Laboratory of Compound Air Pollutions Identification and Control, College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China.
| | - Xiaoli Ma
- Shanxi Key Laboratory of Compound Air Pollutions Identification and Control, College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China.
| | - Xiaoming Gao
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an University, Yan'an 716000, P. R. China
| | - Xiuping Yue
- Shanxi Key Laboratory of Compound Air Pollutions Identification and Control, College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China.
| | - Jun Ren
- Key Laboratory of Coal Science and Technology, Ministry of Education, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Caimei Fan
- Shanxi Key Laboratory of Compound Air Pollutions Identification and Control, College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China.
- Key Laboratory of Coal Science and Technology, Ministry of Education, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Xuan Jian
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an University, Yan'an 716000, P. R. China
| | - Rui Li
- Shanxi Key Laboratory of Compound Air Pollutions Identification and Control, College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China.
- Key Laboratory of Coal Science and Technology, Ministry of Education, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, P. R. China
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Xi Q, Xie F, Liu J, Zhang X, Wang J, Wang Y, Wang Y, Li H, Yu Z, Sun Z, Jian X, Gao X, Ren J, Fan C, Li R. In Situ Formation ZnIn 2 S 4 /Mo 2 TiC 2 Schottky Junction for Accelerating Photocatalytic Hydrogen Evolution Kinetics: Manipulation of Local Coordination and Electronic Structure. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2300717. [PMID: 36919813 DOI: 10.1002/smll.202300717] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/18/2023] [Indexed: 06/15/2023]
Abstract
Regulating electronic structures of the active site by manipulating the local coordination is one of the advantageous means to improve photocatalytic hydrogen evolution (PHE) kinetics. Herein, the ZnIn2 S4 /Mo2 TiC2 Schottky junctions are designed to be constructed through the interfacial local coordination of In3+ with the electronegative O terminal group on Mo2 TiC2 based on the different work functions. Kelvin probe force microscopy and charge density difference reveal that an electronic unidirectional transport channel across the Schottky interface from ZnIn2 S4 to Mo2 TiC2 is established by the formed local nucleophilic/electrophilic region. The increased local electron density of Mo2 TiC2 inhibits the backflow of electrons, boosts the charge transfer and separation, and optimizes the hydrogen adsorption energy. Therefore, the ZnIn2 S4 /Mo2 TiC2 photocatalyst exhibits a superior PHE rate of 3.12 mmol g-1 h-1 under visible light, reaching 3.03 times that of the pristine ZnIn2 S4 . This work provides some insights and inspiration for preparing MXene-based Schottky catalysts to accelerate PHE kinetics.
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Affiliation(s)
- Qing Xi
- Shanxi Key Laboratory of Compound Air Pollutions Identification and Control College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
- College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
- Key Laboratory of Coal Science and Technology, Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Fangxia Xie
- Shanxi Key Laboratory of Compound Air Pollutions Identification and Control College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
- College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Jianxin Liu
- Shanxi Key Laboratory of Compound Air Pollutions Identification and Control College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
- College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Xiaochao Zhang
- College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Jiancheng Wang
- Shanxi Key Laboratory of Compound Air Pollutions Identification and Control College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
- Key Laboratory of Coal Science and Technology, Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Yawen Wang
- College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Yunfang Wang
- College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Houfen Li
- Shanxi Key Laboratory of Compound Air Pollutions Identification and Control College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Zhuobin Yu
- Shanxi Key Laboratory of Compound Air Pollutions Identification and Control College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Zijun Sun
- College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Xuan Jian
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an University, Yan'an, 716000, P. R. China
| | - Xiaoming Gao
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an University, Yan'an, 716000, P. R. China
| | - Jun Ren
- Key Laboratory of Coal Science and Technology, Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Caimei Fan
- College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Rui Li
- Shanxi Key Laboratory of Compound Air Pollutions Identification and Control College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
- College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
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