可见光照射下α-FeOOH光催化降解有机污染物的研究

姜利荣; 赵超; 黄应平; 李瑞萍

环境化学

, , ,

姜利荣, 赵超, 黄应平, 李瑞萍. 可见光照射下α-FeOOH光催化降解有机污染物的研究[J]. 环境化学, 2007, 26(4): 434-438.

引用本文:

姜利荣, 赵超, 黄应平, 李瑞萍. 可见光照射下α-FeOOH光催化降解有机污染物的研究[J]. 环境化学, 2007, 26(4): 434-438.

JIANG Li-rong, ZHAO Chao, HUANG Ying-ping, LI Rui-ping. PHOTOCATALYTIC DEGRADATION OF ORGANIC POLLUTANTS BY α-FeOOH UNDER VISIBLE LIGHT[J]. Environmental Chemistry, 2007, 26(4): 434-438.

Citation:

JIANG Li-rong, ZHAO Chao, HUANG Ying-ping, LI Rui-ping. PHOTOCATALYTIC DEGRADATION OF ORGANIC POLLUTANTS BY α-FeOOH UNDER VISIBLE LIGHT[J]. Environmental Chemistry, 2007, 26(4): 434-438.

可见光照射下α-FeOOH光催化降解有机污染物的研究

1.
华中师范大学化学学院, 武汉, 430079;
2.
三峡大学生态与环境科学研究中心, 宜昌, 443002
基金项目:
国家自然科学基金(50639070,20373074)

湖北省教育厅自然科学重大项目(2004Z001)

PHOTOCATALYTIC DEGRADATION OF ORGANIC POLLUTANTS BY α-FeOOH UNDER VISIBLE LIGHT

1.
Department of Chemistry, China Center Normal University, Wuhan, 430079, China;
2.
Center for Ecologic and Environmental Science, China Three Gorges University, Yichang, 443002, China
Fund Project:

摘要: 以α-FeOOH为光催化剂,酸性桃红(SRB)为目标化合物,研究了可见光照射下光催化剂对SRB的降解,结果表明:在可见光(λ>420nm)照射下,SRB浓度为1.2×10-5mol·l-1,H2O2浓度为1.5×10-3mol·l-1,α-FeOOH为0.16g·l-1,pH=7.05时,SRB的降解效果最好,红外光谱分析表明,SRB降解产物为羧酸及胺类化合物.另外,采用苯甲酸荧光分析法间接测定体系中自由基的含量,表明此光催化降解过程主要涉及·OH历程.
- 酸性桃红 /
- α-FeOOH /
- 光催化
Abstract: The photocatalytic degradation of sulforhodmine B(SRB)was investigated by goethite(α-FeOOH) under visible light.The results showed that the optimum operation parameters of degradation of SRB as follows:at neutral pH,SRB was 1.2×10-5 mol·l-1,H2O2was 1.5×10-3 mol·l-1,goethite was 0.16g·l-1 respectively under visible light.The final mineralized products were carboxyl acids and amine compounds identified by infrared spectrophotometry.·OH radical concentration was indirectly determined by benzoic acid in fluorescence analysis method,which illustrated α-FeOOH photocatalytic degradation irradiated by visible light mainly involved·OH radical mechanism.
- sulforhodmine B /
- goethite /
- photocatalysis

[1]

Ravikumar J X,Gurol M D,Chemical Oxidation of Chlorinated Organics by Hydrogen Peroxide in the Presence of Sand.Environ.Sci.Technol.,1994,28(3):394-400
[2] Wilson C L,Hinman N W,Cooper W J et al.,Hydrogen Peroxide CyCl^-ng in Surface Geothermal Waters of Yellowstone National Park.Environ.Sci.Technol.,2000,34(13):2655-2662
[3] Sugimoto T,Muramatsu A,Formation Mechanism of Monodispersed(α-Fe₂O₃ PartiCl^-s in Dilute FeCl^-sub>3 Solutions.Collids Interface Sci.,1996,184(2):626-628
[4] Leland J K,Bard A J,Photochemistry of Colloidal Semiconducting Iron Oxide Polymorphs.J.Phy.Chem.,1987,91:5076-5083
[5] Watts R J,Foget M K,Kong S H et al.,Hydrogen Peroxide Decomposition in Model Subsurface Systems.Hazard.Mater.B,1999,69:229-243
[6] Hoffmann M R,Martin S T,Choi W et al.,Environmental Applications of Semiconductor Photocatalysis.Chem.Rev.,1995,95:69-96
[7] Dhananjeyan M R,Mielczarski E,Thampi K R et al.,Photodynamics and Surface Characterization of TiO₂ and Fe₂O₃ Photocatalyst Immobilized on Modified Polyethylene Films.J.Phy.Chem.B,2001,105(45):12046-12055
[8] Sorokin A,Seris J L,Meunier B,Efficient Oxidative Dechlorination and Aromatic Ring Cl^-avage of Chlorinated Phenols Catalyzed by Iron Sulfophthalocyanine.Science,1995,268:1163-1166
[9] Sorokin A,Suzzoni-Dezard S D,Poullain D et al.,CO₂ as the Ultimate Degradation Product in the H₂O₂ Oxidation of 2,4,6-Trichlorophenol Catalyzed by Iron Tetrasulfophthalocyanine.J.Am.Chem.Soc.,1996,118:7410-7411
[10] Xie Y,Chen F,He J et al.,Photoassisted Degradation of Two Dyes in the Presence of Fe³⁺ and H₂O₂ under Visible Irradiation.J.Photochem.Photobiol.,2000,136:235-240
[11] Wu T X,Lin T,Zhao J C et al.,TiO₂-Assisted Photodegradation of dyes.9.Photooxidation of a Squarylium Cyanine Dye in Aqueous Dispersions under Visible Light Irradiation.Environ.Sci.Technol.,1999,33:1379-1387
[12] Makino K,Hagiwara T,Hagi A et al.,Cautionary Note for DMPO Spin Trapping in the Presence of Iron Ion.Biochem.Biophys.Res.Commun.,1990,172(5):1073-1080
[13] Berglund G I,Carisson G H,Smith A T et al.,The Catalytic Pathway of Heradish Peroxidase at High Resolution.Nature,2002,417(23):463-468

点击查看大图

计量

文章访问数: 774
HTML全文浏览数: 774
PDF下载数: 282
施引文献: 0

姜利荣, 赵超, 黄应平, 李瑞萍. 可见光照射下α-FeOOH光催化降解有机污染物的研究[J]. 环境化学, 2007, 26(4): 434-438.

引用本文:

姜利荣, 赵超, 黄应平, 李瑞萍. 可见光照射下α-FeOOH光催化降解有机污染物的研究[J]. 环境化学, 2007, 26(4): 434-438.

JIANG Li-rong, ZHAO Chao, HUANG Ying-ping, LI Rui-ping. PHOTOCATALYTIC DEGRADATION OF ORGANIC POLLUTANTS BY α-FeOOH UNDER VISIBLE LIGHT[J]. Environmental Chemistry, 2007, 26(4): 434-438.

Citation:

JIANG Li-rong, ZHAO Chao, HUANG Ying-ping, LI Rui-ping. PHOTOCATALYTIC DEGRADATION OF ORGANIC POLLUTANTS BY α-FeOOH UNDER VISIBLE LIGHT[J]. Environmental Chemistry, 2007, 26(4): 434-438.

可见光照射下α-FeOOH光催化降解有机污染物的研究

1. 华中师范大学化学学院, 武汉, 430079;
2. 三峡大学生态与环境科学研究中心, 宜昌, 443002

收稿日期: 2006-08-07

基金项目:

国家自然科学基金(50639070,20373074)

湖北省教育厅自然科学重大项目(2004Z001)

关键词:

酸性桃红 /
α-FeOOH /
光催化

摘要: 以α-FeOOH为光催化剂,酸性桃红(SRB)为目标化合物,研究了可见光照射下光催化剂对SRB的降解,结果表明:在可见光(λ>420nm)照射下,SRB浓度为1.2×10-5mol·l-1,H2O2浓度为1.5×10-3mol·l-1,α-FeOOH为0.16g·l-1,pH=7.05时,SRB的降解效果最好,红外光谱分析表明,SRB降解产物为羧酸及胺类化合物.另外,采用苯甲酸荧光分析法间接测定体系中自由基的含量,表明此光催化降解过程主要涉及·OH历程.

English Abstract

PHOTOCATALYTIC DEGRADATION OF ORGANIC POLLUTANTS BY α-FeOOH UNDER VISIBLE LIGHT

1. Department of Chemistry, China Center Normal University, Wuhan, 430079, China;
2. Center for Ecologic and Environmental Science, China Three Gorges University, Yichang, 443002, China

Received Date: 2006-08-07

Fund Project:

Keywords:

Abstract: The photocatalytic degradation of sulforhodmine B(SRB)was investigated by goethite(α-FeOOH) under visible light.The results showed that the optimum operation parameters of degradation of SRB as follows:at neutral pH,SRB was 1.2×10-5 mol·l-1,H2O2was 1.5×10-3 mol·l-1,goethite was 0.16g·l-1 respectively under visible light.The final mineralized products were carboxyl acids and amine compounds identified by infrared spectrophotometry.·OH radical concentration was indirectly determined by benzoic acid in fluorescence analysis method,which illustrated α-FeOOH photocatalytic degradation irradiated by visible light mainly involved·OH radical mechanism.

全文HTML

参考文献 (1)

下载: 全尺寸图片幻灯片

返回文章

用微信扫码二维码

分享至好友和朋友圈

可见光照射下α-FeOOH光催化降解有机污染物的研究

PHOTOCATALYTIC DEGRADATION OF ORGANIC POLLUTANTS BY α-FeOOH UNDER VISIBLE LIGHT

计量

出版历程

可见光照射下α-FeOOH光催化降解有机污染物的研究

English Abstract

PHOTOCATALYTIC DEGRADATION OF ORGANIC POLLUTANTS BY α-FeOOH UNDER VISIBLE LIGHT

全文HTML

目录