Photocatalytic reduction of carbon tetrachloride by natural sphalerite under visible light irradiation

被引：39
作者：
Yang, Xinge [1 ]
Li, Yan [1 ]
Lu, Anhuai [1 ]
Yan, Yunhua [1 ]
Wang, Changqiu [1 ]
Wong, Po-Keung [2 ,3 ]
机构：
[1] Peking Univ, Sch Earth & Space Sci, Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China
[2] Chinese Univ Hong Kong, Sch Life Sci, Shatin, Hong Kong, Peoples R China
[3] Chinese Univ Hong Kong, Environm Sci Programme, Shatin, Hong Kong, Peoples R China
来源：
SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2011年 / 95卷 / 07期
基金：
美国国家科学基金会;
关键词：
Sphalerite; Photocatalytic reduction; CCl4; Visible light; N; N-dimethylformamide; CHAIN PHOTOREDUCTION; AZO-DYE; TIO2; DEGRADATION; TRANSFORMATION; WATER; CCL4; PHOTODEGRADATION; NANOCRYSTALLITES; DICHLOROMETHANE;
D O I：
10.1016/j.solmat.2011.02.020
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The photoreductive degradation of carbon tetrachloride (CT) in natural sphalerite ((Zn, Fe)S mineral) suspensions irradiated by visible light (VL) is studied in this paper. 92% of CT is degraded in N,N-dimethylformamide (DMF) organic solvent system after 8 h of VL irradiation. The effects of light source, sphalerite dosage, electron donors, dissolved oxygen and CT initial concentration on CT photocatalytic degradation efficiency are discussed. The degradation products are analyzed by gas chromatography-mass spectrometry (GC-MS), and the photocatalytic degradation mechanism is then proposed. (C) 2011 Elsevier B.V. All rights reserved.
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页码：1915 / 1921
页数：7
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