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›› 2007, Vol. 7 ›› Issue (2): 342-346.

• 过程与工艺 • 上一篇    下一篇

二氧化钛合成与表征及其在光催化降解酸性红B中的应用

崔玉民,孙文中   

  1. 阜阳师范学院化学系
  • 出版日期:2007-04-20 发布日期:2007-04-20

Synthesis and Characterization of TiO2 Particles and Their Application in the Field of Photocatalytic Degradation of Acid Red B

CUI Yu-min,SUN Wen-zhong   

  1. Chemistry Department of Fuyang Teacher ,s College
  • Online:2007-04-20 Published:2007-04-20

摘要: 采用溶胶-凝胶法制备纳米粉末TiO2,并用XRD等技术对样品进行了表征.讨论了影响酸性红B光催化降解率的主要因素,实验结果表明,以600℃煅烧的TiO2为光催化剂,当催化剂用量为2.00 g,通入空气的流量为10.0 L/min,试液的起始浓度80 mg/L(试液体积600 mL),pH=6.5时,光照140 min,酸性红B的降解率达到99.2%.

关键词: 溶胶-凝胶法, 纳米微粒, TiO2, 酸性红B, 光催化降解

Abstract: TiO2 nanometer particles are prepared by a sol-gel process. XRD technique is used for the characterization of samples. The primary factors which influence the photocatalytic degradation of acid red B are discussed. The results show that the photodegradation rate of acid red B can reach 99.2% by using TiO2 powder calcined at 600℃ as photocatalyst under the conditions of TiO2 2.00 g, air flow rate 10.0 L/min, starting concentration of acid red B 80 mg/L, pH 6.5, and illumination time 140 min.

Key words: sol-gel process, nanometer particles, TiO2, acid red B, photocatalytic degradation