化工进展

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磁控溅射制备非晶态WO3薄膜的光催化性能

黄佳木,李 璐,刘园园,赵 培,董思勤   

  1. 重庆大学材料科学与工程学院,重庆 400045
  • 出版日期:2010-10-05 发布日期:2010-10-05

Photocatalytic properties of amorphous WO3 thin films grown by magnetron sputtering

HUANG Jiamu,LI Lu,LIU Yuanyuan,ZHAO Pei,DONG Siqin   

  1. College of Materials Science and Engineering,Chongqing University,Chongqing 400045,China
  • Online:2010-10-05 Published:2010-10-05

摘要:

采用射频反应磁控溅射工艺在玻璃基片上沉积了非晶态WO3薄膜。通过光催化降解亚甲基蓝和罗丹明B溶液实验,研究了所制WO3薄膜的光催化活性和使用寿命。X射线衍射(XRD)分析表明:所制备的WO3薄膜为非晶态。光催化实验表明:紫外光照3 h后,薄膜对亚甲基蓝和罗丹明B溶液的最大降解率分别为83.26%72.73%。重复使用3次后,薄膜对亚甲基蓝的降解率保持在75%以上,7次使用后薄膜基本丧失光催化活性。采用去离子水超声处理30 min的方法可使已失活薄膜对亚甲基蓝的降解率从20% 恢复至81%

Abstract:

WO3 films were deposited on glass substrates by reactive magnetron sputteringtheir catalytic activity and service life were studied via photodegradation for methylene blue and rhodamine B solutions. Experimental results showed that the prepared WO3 films are amorphous as characterized by X-ray diffractionXRD. Being irradiated for 3 h by ultraviolet lightthe maximum degradation rate of methylene blue and rhodamine B solutions were 83.36% and 72.73%respectively. The photodegradation rate of methylene blue remained at 75% after reused for three times of the WO3 films. The photocatalytic activity of the WO3 films almost disappeared after using for seven times. The deactivated WO3 films could be regenerated by ultrasonic treatment in deionized water for 30 minwith which the photodegradation rate of methylene blue could be improved from 20% to 81%.

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