期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 810, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.151839
关键词
Bismuth silicate; Photonic crystal; Photon localization; Pholocatalyst
资金
- Industrial Research Project of Science and Technology Department, Shaanxi Province [2018GY-106]
- National Natural Science Foundation of China [51302161, 51702194]
Bismuth silicate (Bi2SiO5 and Bi12SiO20, BSO) films were aimed to grow uniformly on SiO2 photonic crystal (SPC) via spin-coating. The as-prepared BSO-SPC exhibited better photocatalytic decomposition of Rhodamine B (RhB) than that of the ordinary BSO film under ultraviolet (UV) irradiation. The improvement of photocatalytic activity of BSO can be attributed to the enhancement of light harvesting efficiency by SPC. The results show that the photon localization of SPC plays an important role in enhancing the light absorption of BSO. The influences of the particle diameter of SiO2, the thickness of both SPC and BSO layer on the photon localization of SPC were investigated. This work provides a simple method to improve the light harvesting efficiency of photocatalyst and extends the application of photonic crystal. In addition, the recovery and reuse of immobilized BSO-SPC photocatalyst make it more suitable for practical application. (C) 2019 Elsevier B.V. All rights reserved.
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