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.
引用
收藏
页码：1915 / 1921
页数：7
相关论文
共 54 条
  • [1] Degradation of 4-chlorophenol by a microwave assisted photocatalysis method
    Ai, ZH
    Yang, P
    Lu, XH
    [J]. JOURNAL OF HAZARDOUS MATERIALS, 2005, 124 (1-3) : 147 - 152
  • [2] Characterization and photocatalytic activity of Au/TiO2 thin films for azo-dye degradation
    Arabatzis, IM
    Stergiopoulos, T
    Andreeva, D
    Kitova, S
    Neophytides, SG
    Falaras, P
    [J]. JOURNAL OF CATALYSIS, 2003, 220 (01) : 127 - 135
  • [3] Photocatalytic degradation for environmental applications - a review
    Bhatkhande, DS
    Pangarkar, VG
    Beenackers, AACM
    [J]. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, 2002, 77 (01) : 102 - 116
  • [4] TiO2 photocatalytic degradation of dichloromethane:: An FTIR and solid-state NMR study
    Borisch, J
    Pilkenton, S
    Miller, ML
    Raftery, D
    Francisco, JS
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (18) : 5640 - 5646
  • [5] Chain photoreduction of CCl3F induced by TiO2 particles
    Calhoun, RL
    Winkelmann, K
    Mills, G
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (40) : 9739 - 9746
  • [6] Photocatalytically assisted hydrolysis of chlorinated methanes under anaerobic conditions
    Calza, P
    Minero, C
    Pelizzetti, E
    [J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1997, 31 (08) : 2198 - 2203
  • [7] PHOTO-DECHLORINATION OF PCBS IN PRESENCE OF TITANIUM-DIOXIDE IN AQUEOUS SUSPENSIONS
    CAREY, JH
    LAWRENCE, J
    TOSINE, HM
    [J]. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, 1976, 16 (06) : 697 - 701
  • [8] Visible light activity of TiO2 for the photoreduction of CCl4 and Cr(VI) in the presence of nonionic surfactant (Brij)
    Cho, YM
    Kyung, H
    Choi, W
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2004, 52 (01) : 23 - 32
  • [9] Visible light-induced degradation of carbon tetrachloride on dye-sensitized TiO2
    Cho, YM
    Choi, WY
    Lee, CH
    Hyeon, T
    Lee, HI
    [J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2001, 35 (05) : 966 - 970
  • [10] Kinetics and mechanism of CCl4 photoreductive degradation on TiO2: The role of trichloromethyl radical and dichlorocarbene
    Choi, WY
    Hoffmann, MR
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (06) : 2161 - 2169
123456