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纳米TiO2混合晶体的制备及其光催化降解活性

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汤心虎, 谭淑英, 张辉龙, 金腊华. 纳米TiO2混合晶体的制备及其光催化降解活性[J]. 环境化学, 2005, 24(3): 311-314.
引用本文: 汤心虎, 谭淑英, 张辉龙, 金腊华. 纳米TiO2混合晶体的制备及其光催化降解活性[J]. 环境化学, 2005, 24(3): 311-314.
shu
TANG Xin-hu, TAN Shu-ying, ZHANG Hui-long, JIN La-hua. STUDY ON THE PREPARATION AND PHOTOCATALYTIC ACTIVITY OF MIXED-CRYSTALLINE NANO-TiO2[J]. Environmental Chemistry, 2005, 24(3): 311-314.
Citation: TANG Xin-hu, TAN Shu-ying, ZHANG Hui-long, JIN La-hua. STUDY ON THE PREPARATION AND PHOTOCATALYTIC ACTIVITY OF MIXED-CRYSTALLINE NANO-TiO2[J]. Environmental Chemistry, 2005, 24(3): 311-314.
shu

纳米TiO2混合晶体的制备及其光催化降解活性

  • 1.

    暨南大学理工学院环境工程系, 广州, 510632

  • 基金项目:

    国家自然科学基金资助项目(50478091)

STUDY ON THE PREPARATION AND PHOTOCATALYTIC ACTIVITY OF MIXED-CRYSTALLINE NANO-TiO2

  • 1.

    Department of Environmental Engineering, College of Science and Engineering, Jinan University, Guangzhou, 510632

  • Fund Project:

  • 摘要: 以乙酸为水解抑制剂,采用sol-gel法制备纳米TiO2混合晶体催化剂,考察了抑制剂用量、煅烧温度、粒径等对催化性能的影响.结果表明,乙酸的用量影响催化剂的活性,当CH3COOH：Ti(OBu)4=0.8—1.0：1时效果较好;煅烧温度直接影响混合晶体的组成,580℃时锐钛矿/金红石=20.62,650℃时锐钛型/金红石=2.46,混合晶体具有较高的催化性能,粒径大小对TiO2的催化性能影响很大,粒子尺寸愈小,则比表面积愈大,电子空穴愈难复合,有利于对活性艳红X-3B的降解.
    Abstract: Mixed-crystalline nano-TiO2 catalyst was prepared by sol-gel method, acetic acid as an inhibitor during hydrolyzation.The effects of inhibitor dosage, calcining temperature and particle size on the catalyst activity were investigated. The results showed that the optimum proportion of acetic acid and tetrabutyl titanate was (about) 0.8—1.0：1. The temperature of crystal changing decreased with the dosage of acetic acid increasing. The crystalline structure of TiO2 was affected drastically by calcining temperature. The proportion of anatase and rutile was 20.62 and 2.46 respectively, when gel was calcined at 580 Celsius degree and 650 Celsius (degree). The catalyst activity was affected drastically by particle size. The smaller the particle size was, the higher activity of catalyst was.
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  • [1] 汤心虎,谭淑英,李明玉,低强度紫外线催化降解活性艳红X-3B溶液研究[J] .环境污染治理技术与设备,2004,5(12):35-38
    [2] 刘粤惠,刘平安,X射线衍射分析原理与应用[M] .北京:化学工业出版社,2003,211
    [3] Debnath R, Chaudhuri J,Inhibiting Effect of AlPO4 and SiO2 on the Anatase-Rutile Transformation Reaction: an X-ray and Laser Raman Study [J] .J.Mater Res.,1992,7:3348-3351
    [4] Lee S K,Robertson P K J,Mills A et al.,Modification and Enhanced Photocatalytic Activity of TiO2 Following Exposure to Non-linear Irradiation Sources [J] . Journal of Photochemistry and Photobiology A:Chemistry ,1999,122(1):69-71
    [5] Tsai S J, Cheng S F,Effect of TiO2 Crystalline Structure in Photocatalytic Degradation of Phenolic Contaminants[J] .Catalysis Today,1997,33(1-3):227-237
    [6] 高伟,吴凤清,罗臻等,TiO2晶型与光催化活性关系的研究 [J] .高等学校化学学报,2001,22(4):660-662


    [7] Maira A J, Yeung K L, Soria J et al.,Gas-phase Photo-oxidation of Toluene Using Nanometer-Size TiO2 Catalysts,[J] .Applied Catalysis B:Environmental, 2001,29(4):327-336

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  • 收稿日期:  2004-08-13
汤心虎, 谭淑英, 张辉龙, 金腊华. 纳米TiO2混合晶体的制备及其光催化降解活性[J]. 环境化学, 2005, 24(3): 311-314.
引用本文: 汤心虎, 谭淑英, 张辉龙, 金腊华. 纳米TiO2混合晶体的制备及其光催化降解活性[J]. 环境化学, 2005, 24(3): 311-314.
shu
TANG Xin-hu, TAN Shu-ying, ZHANG Hui-long, JIN La-hua. STUDY ON THE PREPARATION AND PHOTOCATALYTIC ACTIVITY OF MIXED-CRYSTALLINE NANO-TiO2[J]. Environmental Chemistry, 2005, 24(3): 311-314.
Citation: TANG Xin-hu, TAN Shu-ying, ZHANG Hui-long, JIN La-hua. STUDY ON THE PREPARATION AND PHOTOCATALYTIC ACTIVITY OF MIXED-CRYSTALLINE NANO-TiO2[J]. Environmental Chemistry, 2005, 24(3): 311-314.
shu

纳米TiO2混合晶体的制备及其光催化降解活性

  • 1. 暨南大学理工学院环境工程系, 广州, 510632
  • 收稿日期:  2004-08-13
基金项目:

国家自然科学基金资助项目(50478091)

摘要: 以乙酸为水解抑制剂,采用sol-gel法制备纳米TiO2混合晶体催化剂,考察了抑制剂用量、煅烧温度、粒径等对催化性能的影响.结果表明,乙酸的用量影响催化剂的活性,当CH3COOH：Ti(OBu)4=0.8—1.0：1时效果较好;煅烧温度直接影响混合晶体的组成,580℃时锐钛矿/金红石=20.62,650℃时锐钛型/金红石=2.46,混合晶体具有较高的催化性能,粒径大小对TiO2的催化性能影响很大,粒子尺寸愈小,则比表面积愈大,电子空穴愈难复合,有利于对活性艳红X-3B的降解.

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