高等学校化学学报

高等学校化学学报

• 研究简报 • 上一篇    下一篇

高活性低失活In(OH)3纳米晶光催化剂的制备和表征

陈友三, 王绪绪, 李旦振, 付贤智   

  1. 福州大学光催化研究所,福建省光催化重点实验室, 福州 350002
  • 收稿日期:2006-02-27 修回日期:1900-01-01 出版日期:2007-02-10 发布日期:2007-02-10
  • 通讯作者: 王绪绪

Preparation and Characterization of In(OH)3 Nanocrystal with High Photocatalytic Activity and Stability

CHEN You-San, WANG Xu-Xu, LI Dan-Zhen, FU Xian-Zhi   

  1. Key Laboratory of Photocatalysis of Fujian Province, Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China
  • Received:2006-02-27 Revised:1900-01-01 Online:2007-02-10 Published:2007-02-10
  • Contact: WANG Xu-Xu

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摘要： 采用超声沉淀法从In(NO3)3制备出了In(OH)3纳米晶体, 发现其在254 nm紫外光照射下对苯催化活性和活性稳定性比P25-TiO2高得多.

关键词: In(OH)3, P25-TiO2, 光催化, 苯

Abstract: In(OH)3 photocatalyst was prepared using ultrasonic hydrolysis precipitation followed by calcining at temperature lower than 160 ℃. The characterizations by XRD, DRS, TG-DSC, TEM and FTIR show that the solid is a cubic crystal with 10—15 nm size, and has two band gaps, direct band gap 5.48 and indirect gap 5.02 eV. Evaluation of the photocatalytic activity toward oxidation reactions of benzene under UV irradiation (λmax=254 nm) showed that In(OH)3 presented much higher photoactivity and active stability than commercial Degussa-P25 TiO2. FTIR characterization for the samples before and after the photocatalytic reaction suggested that the better photocatalytic behavior of In(OH)3 than the TiO2 is due to lower aggradations of the intermediate species on its surface in photocatalytic process.

Key words: In(OH)3, P25-TiO2, Photocatalysis, Benzene

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