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Liu C, Zhang Y, Yin G, Shi T, Zhang Y, Chen Z. Fabricating BiVO 4/FeOOH/ZnFe-LDH hierarchical core–shell nanorod arrays for visible-light-driven photoelectrochemical water oxidation. Inorg Chem Front 2022. [DOI: 10.1039/d2qi01165d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
In this paper, porous BiVO4 nanorod arrays were encapsulated with FeOOH and ZnFe layered double hydroxide (ZnFe LDH) for the construction of hierarchical structures to achieve excellent transfer and separation of photogenerated electron–hole pairs.
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Affiliation(s)
- Changhai Liu
- School of Materials Science and Engineering, Jiangsu Key Laboratory of Materials Surface Science and Technology, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou, 213164, Jiangsu, China
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren'ai Road, Suzhou, 215123, Jiangsu, PR China
| | - Yue Zhang
- School of Materials Science and Engineering, Jiangsu Key Laboratory of Materials Surface Science and Technology, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou, 213164, Jiangsu, China
| | - Ge Yin
- School of Materials Science and Engineering, Jiangsu Key Laboratory of Materials Surface Science and Technology, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou, 213164, Jiangsu, China
| | - Tiantian Shi
- School of Materials Science and Engineering, Jiangsu Key Laboratory of Materials Surface Science and Technology, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou, 213164, Jiangsu, China
| | - Yue Zhang
- School of Materials Science and Engineering, Jiangsu Key Laboratory of Materials Surface Science and Technology, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou, 213164, Jiangsu, China
| | - Zhidong Chen
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, Jiangsu, China
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Lee H, Wu X, Sun L. Homogeneous Electrochemical Water Oxidation at Neutral pH by Water-Soluble Ni II Complexes Bearing Redox Non-innocent Tetraamido Macrocyclic Ligands. CHEMSUSCHEM 2020; 13:3277-3282. [PMID: 32233069 DOI: 10.1002/cssc.202000153] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 03/13/2020] [Indexed: 06/10/2023]
Abstract
Water oxidation is the bottleneck reaction in artificial photosynthesis. Exploring highly active and stable molecular water oxidation catalysts (WOCs) is still a great challenge. In this study, a water-soluble NiII complex bearing a redox non-innocent tetraamido macrocyclic ligand (TAML) is found to be an efficient electrocatalyst for water oxidation in neutral potassium phosphate buffer. Controlled-potential electrolysis experiments show that it can sustain at a steady current of approximately 0.2 mA cm-2 for >7 h at 1.75 V versus normal hydrogen electrode (NHE) without the formation of NiOx . Electrochemical and spectroelectrochemical tests show that the redox-active ligand, as well as HPO4 2- in the buffer, participate in the catalytic cycle. More importantly, catalytically active intermediate [NiIII (TAML2- )-O. ] is formed via several proton-coupled electron transfer processes and reacts with H2 O with the assistance of base to release molecular oxygen. Thus, the employment of redox non-innocent ligands is a useful strategy for designing effective molecular WOCs.
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Affiliation(s)
- Husileng Lee
- State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), 116024, Dalian, P. R. China
| | - Xiujuan Wu
- State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), 116024, Dalian, P. R. China
| | - Licheng Sun
- State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), 116024, Dalian, P. R. China
- Department of Chemistry, School of Chemical Science and Engineering, KTH Royal Institute of Technology, 10044, Stockholm, Sweden
- Institute for Energy Science and Technology, Dalian University of Technology, Dalian, 116024, P. R. China
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