Effective degradation of tetracycline by mesoporous Bi2WO6 under visible light irradiation
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- 作者：Xiaolong Chu ; Guoqiang Shan ; Chun Chang…
- 关键词：Bi2WO6 ; hydrothermal synthesis ; tetracycline (TC) ; photocatalysis
- 刊名：Frontiers of Environmental Science & Engineering
- 出版年：2016
- 出版时间：April 2016
- 年：2016
- 卷：10
- 期：2
- 页码：211-218
- 全文大小：755 KB
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Guoqiang Shan (1)
Chun Chang (1)
Yu Fu (1)
Longfei Yue (1)
Lingyan Zhu (1)
1. College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China - 刊物主题：Environment, general;
- 出版者：Springer Berlin Heidelberg
- ISSN：2095-221X
文摘
Bi2WO6 was synthesized with a hydrothermal method at different pHs and used for the degradation of tetracycline (TC) in water. The mesoporous Bi2WO6 prepared at pH 1 (BWO-1) displayed the highest adsorption and degradation capacity to TC due to its large surface area and more efficient capacity to separate photogenerated electrons and holes. 97% of TC at 20 mg·L−1 was removed by BWO-1 at 0.5 g·L−1 after 120 min irradiation under simulated solar light. Only 31% of the total organic carbon (TOC) was removed after 360 min irradiation although the TC removal reached 100%, suggesting that TC was mainly transformed to intermediate products rather than completely mineralized. The intermediates were identified by high-performance liquid chromatography-time of flight-mass spectrometry (HPLC-TOF-MS) and possible photodegradation pathways were proposed. Keywords Bi2WO6 hydrothermal synthesis tetracycline (TC) photocatalysis