|
1
|
Sun Z, Xu C, Li Z, Guo F, Liu B, Liu J, Zhou J, Yu Z, He X, Jiang D. Construction of organic–inorganic hybrid photoanodes with metal phthalocyanine complexes to improve photoelectrochemical water splitting performance. NEW J CHEM 2022. [DOI: 10.1039/d2nj00762b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The modification of cobalt phthalocyanine complexes on BiVO4 could promote the charge carrier migration and accelerate the water oxidation kinetics, thus significantly enhancing the photoelectrochemical water splitting.
Collapse
Affiliation(s)
- Zijun Sun
- Research Centre of Materials Science and Engineering, School of Electrical and Information Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
- Liuzhou key laboratory for new energy vehicle power lithium battery, Liuzhou 545006, China
| | - Chengwen Xu
- Research Centre of Materials Science and Engineering, School of Electrical and Information Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
- Liuzhou key laboratory for new energy vehicle power lithium battery, Liuzhou 545006, China
| | - Zhen Li
- Research Centre of Materials Science and Engineering, School of Electrical and Information Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
- Liuzhou key laboratory for new energy vehicle power lithium battery, Liuzhou 545006, China
| | - Fei Guo
- Research Centre of Materials Science and Engineering, School of Electrical and Information Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
- Liuzhou key laboratory for new energy vehicle power lithium battery, Liuzhou 545006, China
| | - Baosheng Liu
- Research Centre of Materials Science and Engineering, School of Electrical and Information Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
- Liuzhou key laboratory for new energy vehicle power lithium battery, Liuzhou 545006, China
| | - Jinghua Liu
- Research Centre of Materials Science and Engineering, School of Electrical and Information Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
- Liuzhou key laboratory for new energy vehicle power lithium battery, Liuzhou 545006, China
| | - Jin Zhou
- Research Centre of Materials Science and Engineering, School of Electrical and Information Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
| | - Zhiqiang Yu
- Research Centre of Materials Science and Engineering, School of Electrical and Information Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
| | - Xiong He
- Research Centre of Materials Science and Engineering, School of Electrical and Information Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
- Liuzhou key laboratory for new energy vehicle power lithium battery, Liuzhou 545006, China
| | - Daochuan Jiang
- School of Materials Science and Engineering, Anhui University, Hefei, 230601, China
| |
Collapse
|
|
2
|
Güttinger R, Wiprächtiger G, Blacque O, Patzke GR. Co/Ni-polyoxotungstate photocatalysts as precursor materials for electrocatalytic water oxidation. RSC Adv 2021; 11:11425-11436. [PMID: 35423616 PMCID: PMC8695939 DOI: 10.1039/d0ra10792a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 03/04/2021] [Indexed: 01/22/2023] Open
Abstract
An open-core cobalt polyoxometalate (POM) [(A-α-SiW9O34)Co4(OH)3(CH3COO)3]8-Co(1) and its isostructural Co/Ni-analogue [(A-α-SiW9O34)Co1.5Ni2.5(OH)3(CH3COO)3]8-CoNi(2) were synthesized and investigated for their photocatalytic and electrocatalytic performance. Co(1) shows high photocatalytic O2 yields, which are competitive with leading POM water oxidation catalysts (WOCs). Furthermore, Co(1) and CoNi(2) were employed as well-defined precursors for heterogeneous WOCs. Annealing at various temperatures afforded amorphous and crystalline CoWO4- and Co1.5Ni2.5WO4-related nanoparticles. CoWO4-related particles formed at 300 °C showed substantial electrocatalytic improvements and were superior to reference materials obtained from co-precipitation/annealing routes. Interestingly, no synergistic interactions between cobalt and nickel centers were observed for the mixed-metal POM precursor and the resulting tungstate catalysts. This stands in sharp contrast to a wide range of studies on various heterogeneous catalyst types which were notably improved through Co/Ni substitution. The results clearly demonstrate that readily accessible POMs are promising precursors for the convenient and low-temperature synthesis of amorphous heterogeneous water oxidation catalysts with enhanced performance compared to conventional approaches. This paves the way to tailoring polyoxometalates as molecular precursors with tuneable transition metal cores for high performance heterogeneous electrocatalysts. Our results furthermore illustrate the key influence of the synthetic history on the performance of oxide catalysts and highlight the dependence of synergistic metal interactions on the structural environment.
Collapse
Affiliation(s)
- Robin Güttinger
- Department of Chemistry, University of Zurich Winterthurerstrasse 190 CH-8057 Zurich Switzerland http://www.patzke.ch
| | - Giann Wiprächtiger
- Department of Chemistry, University of Zurich Winterthurerstrasse 190 CH-8057 Zurich Switzerland http://www.patzke.ch
| | - Olivier Blacque
- Department of Chemistry, University of Zurich Winterthurerstrasse 190 CH-8057 Zurich Switzerland http://www.patzke.ch
| | - Greta R Patzke
- Department of Chemistry, University of Zurich Winterthurerstrasse 190 CH-8057 Zurich Switzerland http://www.patzke.ch
| |
Collapse
|
|
3
|
Li Z, Zhang Q, Chen X, Yang F, Wang D, Liu L, Ye J. Cl - modification for effective promotion of photoelectrochemical water oxidation over BiVO 4. Chem Commun (Camb) 2020; 56:13153-13156. [PMID: 33016292 DOI: 10.1039/d0cc05334a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Postsynthetic treatment is an attractive method to enhance photoelectrochemical water splitting. The facile Cl- modification approach developed in this work remarkably promotes the photocurrent density of BiVO4 up to 2.7 mA cm-2 by facilitating carrier transfer in addition to a charge carrier separation efficiency enhancement.
Collapse
Affiliation(s)
- Zhe Li
- TJU-NIMS International Collaboration Laboratory, Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education) and Tianjin Key Laboratory of Composite and Functional Materials, School of Material Science and Engineering, Tianjin University, Tianjin 300072, China.
| | | | | | | | | | | | | |
Collapse
|