期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 284, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.seppur.2021.120241
关键词
-Fe2O3-Bi2S3 heterojunction; Graphene co-catalyst; Hydrothermal; Photo-Fenton reaction; Benzotriazole; Photocatalysis
资金
- [38881]
An alpha-Fe2O3-Bi2S3 nanorod with graphene was successfully synthesized and showed high catalytic activity in the degradation of benzotriazole (BTA) under LED-visible light. Hydroxyl radicals were found to contribute to the degradation reaction. The catalyst also exhibited good reusability over multiple cycles.
alpha-Fe2O3-Bi2S3 nanorods was successfully synthesized via a hydrothermal route with incorporation of graphene obtained from the pyrolysis of alginate, and was employed as a catalyst of the degradation of benzotriazole (BTA) in a photo-Fenton process. Due to the unique combination of graphene and the binary alpha-Fe2O3-Bi2S3 nanorod, the sample with 3 wt% graphene loading shows a high catalytic activity of 98% of BTA conversion under LED-visible light. The quenched free radicals are detected with an Electron Spin Resonance (ESR) technique, and the results indicate that hydroxyl radical center dot & nbsp;OH contributed to the BTA degradation reaction. A mechanism is proposed. Furthermore, the reusability of the catalyst was examined and the catalyst showed high activity over four cyclic runs.
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