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Hydrothermal synthesis and photocatalytic activities of stabilized bismuth vanadate/bismuth tungstate composites
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| Title: | Hydrothermal synthesis and photocatalytic activities of stabilized bismuth vanadate/bismuth tungstate composites |
| Authors: | Ketwong, Pradudnet Browse this author | | Takashima, Mai Browse this author | | Nitta, Akio Browse this author | | Pookmanee, Pusit Browse this author | | Ohtani, Bunsho Browse this author →KAKEN DB |
| Keywords: | Bismuth vanadate/bismuth tungstate | | Photocatalyst | | Stabilization | | Photoacoustic spectroscopy |
| Issue Date: | Apr-2018 |
| Publisher: | Elsevier |
| Journal Title: | Journal of environmental chemical engineering |
| Volume: | 6 |
| Issue: | 2 |
| Start Page: | 2048 |
| End Page: | 2054 |
| Publisher DOI: | 10.1016/j.jece.2018.01.062 |
| Abstract: | Bismuth vanadate/bismuth tungstate (BVO/BWO) composites in various BVO fractions (f(V)) were synthesized through hydrothermal reaction. Morphology analysis of the composites showed that rod-like BVO structures were partially deposited on flake-ball (FB) BWO particles. In addition, surface structures of BWO, BVO and BVO/BWO were studied in energy-resolved distribution of electron traps and conduction band-bottom (CBB) position by household reversed double-beam photoacoustic spectroscopy (PAS) and single-beam PAS, respectively. Apparent CBB of BVO/BWO was ca. 0.4 eV anodically shifted from BWO and almost similar to BVO. Moreover, photocatalytic oxygen liberation under irradiation of UV-vis and visible lights demonstrated that photocatalytic activities of the BVO/BWO composites were depended on f(V) and calcined BVO/BWO composites in which BVO was stabilized on BWO showed enhancement of photocatalytic activity comparing to a pristine BVO. The prolonged and the highest active photocatalyst under visible light was calcined 0.80 f(V) due to BVO stabilization on FB-BWO particles. |
| Rights: | © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/77191 |
| Appears in Collections: | 触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 高島 舞
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