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UV–vis light responsive Bi2WO6 nanosheet/TiO2 nanobelt heterojunction photo-catalyst for CO2 reduction
Catalysis Communications, Volume: 179, Start page: 106681
Swansea University Author:
Mary Larimi
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© 2023 The Authors. This is an open access article under the CC BY license.
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DOI (Published version): 10.1016/j.catcom.2023.106681
Abstract
A series of Bi2WO6/TiO2 composite photocatalysts with different ratios of Bi2WO6 nanosheets to TiO2 nanobelts (1, ½, ⅓ and ¼) were synthesized by hydrothermal method and evaluated for CO2 photoreduction. The structural and optical properties of these photocatalysts were investigated by XRD, N2-physi...
| Published in: | Catalysis Communications |
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| ISSN: | 1566-7367 |
| Published: |
Elsevier BV
2023
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa67228 |
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| Abstract: |
A series of Bi2WO6/TiO2 composite photocatalysts with different ratios of Bi2WO6 nanosheets to TiO2 nanobelts (1, ½, ⅓ and ¼) were synthesized by hydrothermal method and evaluated for CO2 photoreduction. The structural and optical properties of these photocatalysts were investigated by XRD, N2-physisorption, EDX, FESEM, Raman, TPD, DRS and PL. Bi2WO6/TiO₂ composite photocatalysts show enhanced CO2 adsorption capacity and coversion performance compared to both pure TiO₂ and bulk Bi2WO6. Loading Bi2WO6 nanosheets on TiO2 nanobelts leads to formation a heterojunction, which enhances the photocatalytic visible light performance by decreasing the recombination rate of photoinduced electron-hole pairs. The maximum CH4 production of 18.95 μmol/gcat in 8 h has been reported for composite with Bi2WO6/TiO₂ ratio of ½, which is 3 times higher than that of bulk Bi2WO6 and pure TiO2. |
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| Keywords: |
Bi2WO6; TiO2; Photocatalyst; CO2 conversion |
| College: |
Faculty of Science and Engineering |
| Start Page: |
106681 |