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SO42-/TiO2光催化还原Cr(Ⅵ)的研究

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江芳, 郑寿荣, 郑正, 郭照冰, 袁守军, 帖靖玺, 陈立强. SO42-/TiO2光催化还原Cr(Ⅵ)的研究[J]. 环境化学, 2005, 24(4): 389-393.
引用本文: 江芳, 郑寿荣, 郑正, 郭照冰, 袁守军, 帖靖玺, 陈立强. SO42-/TiO2光催化还原Cr(Ⅵ)的研究[J]. 环境化学, 2005, 24(4): 389-393.
shu
JIANG Fang, ZHENG Shou-rong, ZHENG Zheng, GUO Zhao-bing, YUAN Shou-jun, TIE Jing-xi, CHEN Li-qiang. STUDY ON PHOTO-REDUCTION OF Cr(Ⅵ) CATALYZED BY SO42-/TiO2[J]. Environmental Chemistry, 2005, 24(4): 389-393.
Citation: JIANG Fang, ZHENG Shou-rong, ZHENG Zheng, GUO Zhao-bing, YUAN Shou-jun, TIE Jing-xi, CHEN Li-qiang. STUDY ON PHOTO-REDUCTION OF Cr(Ⅵ) CATALYZED BY SO42-/TiO2[J]. Environmental Chemistry, 2005, 24(4): 389-393.
shu

SO42-/TiO2光催化还原Cr(Ⅵ)的研究

  • 1.

    南京大学环境学院, 污染控制与资源化研究国家重点实验室, 南京, 210093

  • 基金项目:

    国家自然科学基金(10275034)资助项目

STUDY ON PHOTO-REDUCTION OF Cr(Ⅵ) CATALYZED BY SO42-/TiO2

  • 1.

    State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210093

  • Fund Project:

  • 摘要: 将溶胶-凝胶法制备的SO42-/TiO2在不同温度下焙烧得到了具有不同特性的催化剂,用X射线衍射(XRD)、热重-差热分析(TG-DTA)、氨气程序升温脱附(NH3-TPD)、静态吸附等手段对催化剂进行了表征.研究了不同特性的SO42-/TiO2催化剂光催化还原Cr(Ⅵ)的行为,并对其影响因素进行了分析.结果表明:SO42-/TiO2在300-600℃下焙烧均具有较高的催化效率,而在700℃及800℃下焙烧其催化活性显著降低.SO42-/TiO2的这种催化特性是由其吸附性能、晶相组成及表面酸量决定的.
    Abstract: In this study, SO4 /TiO2 photocatalysts were prepared using the sol-gel method followed by calcination at different temperatures. The behavior of Cr (Ⅳ) photo-reduction catalyzed by these catalysts was studied. XRD, TG-DTA, NH3-TPD and static adsorption were used to characterize SO42-/TiO2 catalysts. Results revealed that SO42-/TiO2 catalysts calcined at 300℃ to 600℃ showed good photocatalytic efficiency. For catalysts calcined at 700℃ to 800℃, a decreased catalytic activity was observed. The catalytic efficiencies of the photocatalysts are related to their Cr(Ⅳ) adsorption capacities, crystalline phase content and surface acidity.
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  • [1] 徐自力,张家骅,杨秋景等, SO42-/TiO2对SO2-C7H16-TiO2复相光化学反应的影响.环境化学, 2003,22(5)∶450-453
    [2] Yamazaki S, Fujinaga N, Araki K,Effect of Sulfate Ions for Sol-gel Synthesis of Titania Photocatalyst.Appl. Catal.A,2001,210(3)∶97-102
    [3] Colo'n G, Hidalgo M C, Navio J A, Photocatalytic Behaviour of Sulphated TiO2 for Phenol Degradation.Appl. Catal.B,2003,45(1)∶39-50
    [4] Samantaray S K, Mohapatra P, Parida K,Physico-Chemical Characterisation and Photocatalytic Activity of Nanosized SO42-/TiO2 towards Degradation of 4-Nitrophenol.J.Mol. Catal.A,2003,198∶277-287
    [5] 胡恒亮,穆祥祺, X射线衍射技术. 北京:纺织工业出版社, 1988,74-77
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    [7] Chen H Y, Zahraa O, Bouchy M et al.,Adsorption Properties of TiO2 Related to the Photocatalytic Degradation of Organic Contaminants in Water.J. Photochem. Photobiol.A, 1995,85∶179-186
    [8] Ku Y, Jung I, Photocatalytic Reduction of Cr(Ⅵ) in Aqueous Solutions by UV Irradiation with the Presence of Titanium Dioxide.Water Res.,2001,35(1)∶135-142
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    [10] 苏文悦,傅贤智,魏可镁,SO42-/TiO2 固体酸的红外和拉曼光谱研究.光谱学与光谱分析, 2000,20(6)∶840-841
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  • 收稿日期:  2004-11-18
江芳, 郑寿荣, 郑正, 郭照冰, 袁守军, 帖靖玺, 陈立强. SO42-/TiO2光催化还原Cr(Ⅵ)的研究[J]. 环境化学, 2005, 24(4): 389-393.
引用本文: 江芳, 郑寿荣, 郑正, 郭照冰, 袁守军, 帖靖玺, 陈立强. SO42-/TiO2光催化还原Cr(Ⅵ)的研究[J]. 环境化学, 2005, 24(4): 389-393.
shu
JIANG Fang, ZHENG Shou-rong, ZHENG Zheng, GUO Zhao-bing, YUAN Shou-jun, TIE Jing-xi, CHEN Li-qiang. STUDY ON PHOTO-REDUCTION OF Cr(Ⅵ) CATALYZED BY SO42-/TiO2[J]. Environmental Chemistry, 2005, 24(4): 389-393.
Citation: JIANG Fang, ZHENG Shou-rong, ZHENG Zheng, GUO Zhao-bing, YUAN Shou-jun, TIE Jing-xi, CHEN Li-qiang. STUDY ON PHOTO-REDUCTION OF Cr(Ⅵ) CATALYZED BY SO42-/TiO2[J]. Environmental Chemistry, 2005, 24(4): 389-393.
shu

SO42-/TiO2光催化还原Cr(Ⅵ)的研究

  • 1. 南京大学环境学院, 污染控制与资源化研究国家重点实验室, 南京, 210093
  • 收稿日期:  2004-11-18
基金项目:

国家自然科学基金(10275034)资助项目

摘要: 将溶胶-凝胶法制备的SO42-/TiO2在不同温度下焙烧得到了具有不同特性的催化剂,用X射线衍射(XRD)、热重-差热分析(TG-DTA)、氨气程序升温脱附(NH3-TPD)、静态吸附等手段对催化剂进行了表征.研究了不同特性的SO42-/TiO2催化剂光催化还原Cr(Ⅵ)的行为,并对其影响因素进行了分析.结果表明:SO42-/TiO2在300-600℃下焙烧均具有较高的催化效率,而在700℃及800℃下焙烧其催化活性显著降低.SO42-/TiO2的这种催化特性是由其吸附性能、晶相组成及表面酸量决定的.

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