Effective degradation of tetracycline by mesoporous Bi2WO6 under visible light irradiation

被引：0
作者：
Xiaolong Chu
Guoqiang Shan
Chun Chang
Yu Fu
Longfei Yue
Lingyan Zhu
机构：
[1] Nankai University,College of Environmental Science and Engineering
来源：
Frontiers of Environmental Science & Engineering | 2016年 / 10卷
关键词：
Bi; WO; hydrothermal synthesis; tetracycline (TC); photocatalysis;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
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.
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页码：211 / 218
页数：7
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