Decoration of Au nanoparticles onto BiOCl sheets for enhanced photocatalytic performance under visible irradiation for the degradation of RhB dye
- Title
- Decoration of Au nanoparticles onto BiOCl sheets for enhanced photocatalytic performance under visible irradiation for the degradation of RhB dye
- Author
- 이선영
- Keywords
- Bismuth oxychloride; Au nanoparticles; photocatalysis; exposed facets; surface plasmon resonance effect
- Issue Date
- 2016-05
- Publisher
- TAYLOR & FRANCIS LTD
- Citation
- JOURNAL OF EXPERIMENTAL NANOSCIENCE, v. 11, No. 11, Page. 853-871
- Abstract
- Plasmonic photocatalysts are promising candidates for use in the degradation of pollutants. Their ability to degrade a wide range of organic pollutants stems from key properties such as high visible light absorption, the ability to generate hot electrons and the formation of a Schottky barrier that facilitates effective separation of charge carriers. In the present work, we synthesised bismuth oxychloride sensitised with gold nanoparticles (NPs, 20-50 nm) via a two-step chemical process at low temperature. The fabricated Au/BiOCl powder was evaluated in the degradation of Rhodamine B (RhB) dye under visible light irradiation. The photocatalytic performance of the Au/BiOCl hybrid was almost double that of pristine BiOCl. This enhanced performance was attributed to electron transfer from BiOCl to Au via the formation of heterojunctions at the BiOCl/Au interface. Additionally, the surface plasmon resonance effect of the Au NPs provided high optical absorbance in the visible spectrum. TEM (transmission electron microscopy) analysis indicated the presence of polar (010) facets on the BiOCl sheets, which also contributed to dramatically improving their photocatalytic performance. The degradation time of the Au/BiOCl hybrid was 200min compared with 320min for pure BiOCl.
- URI
- https://www.tandfonline.com/doi/abs/10.1080/17458080.2016.1174891http://hdl.handle.net/20.500.11754/53843
- ISSN
- 1745-8080; 1745-8099
- DOI
- 10.1080/17458080.2016.1174891
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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