无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2019, Vol. 51 ›› Issue (6): 88-91.

• 催化材料 • 上一篇    

二氧化钛-钒酸铋复合材料光催化降解布洛芬的研究

高雅男   

  1. 河北化工医药职业技术学院化学与环境工程系,河北石家庄 050000
  • 收稿日期:2019-01-12 出版日期:2019-06-10 发布日期:2020-05-12
  • 作者简介:高雅男(1985— ),女,实验师/工程师,硕士,研究方向为有机合成、制药废水处理;E-mail:realgaoyanan@163.com。

Photo-catalyst degradation of ibuprofen by TiO2-BiVO4 composites

Gao Yanan   

  1. Department of Chemistry and Environmental Engineering,Hebei Chemical & Pharmaceutical College,Shijiazhuang 050000,China
  • Received:2019-01-12 Online:2019-06-10 Published:2020-05-12

摘要:

为综合二氧化钛、钒酸铋光催化剂的性能,制备了二氧化钛-钒酸铋复合光催化剂,并以布洛芬为目标降解物,与二氧化钛、钒酸铋光催化剂的光催化性能进行了对比。以钛酸丁酯为原料,加入无水乙醇、盐酸、去离子水,采用凝胶法制备了二氧化钛光催化剂;以五水硝酸铋、偏钒酸铵为原料,加入浓硝酸、氢氧化钠,制备了钒酸铋、二氧化钛-钒酸铋复合光催化剂。此制备方法简便、高效。在可见光照射下,使用二氧化钛、钒酸铋、二氧化钛-钒酸铋3种光催化剂对布洛芬进行光催化降解,并将3种光催化剂分别联合过氧化氢对布洛芬进行光催化降解,考察了3种光催化剂的光催化性能。结果表明,未加入过氧化氢条件下,3种光催化剂的光催化性能由大到小的顺序为二氧化钛-钒酸铋、二氧化钛、钒酸铋;加入电子捕获剂过氧化氢后,提高了光催化剂降解布洛芬的效率,减少了电子-空穴对的复合速度,并且3种光催化剂的光催化性能由大到小的顺序为二氧化钛-钒酸铋、钒酸铋、二氧化钛。

关键词: 二氧化钛, 钒酸铋, 二氧化钛-钒酸铋复合材料, 布洛芬, 光催化性能

Abstract:

In order to synthesize the performance of TiO2 and BiVO4 photo-catalysts,a TiO2-BiVO4 composite photo-catalyst was prepared.And using ibuprofen as the target degradation product,the performance of TiO2-BiVO4 composite photo-catalyst was compared with that of TiO2 and BiVO4 photo-catalysts.TiO2 photo-catalyst was prepared by gelatin method using butyl ti-tanate as raw material and adding anhydrous ethanol,hydrochloric acid and deionized water.BiVO4 photo-catalyst and TiO2-BiVO4composite photo-catalyst were prepared with five water bismuth nitrate[Bi(NO33·5H2O] and ammonium vanadate (NH4VO3) asraw material by adding concentrated nitric acid and sodium hydroxide.This preparation method was simple and efficient.Under visible light irradiation,the photo-catalytic degradation of ibuprofen was carried out by using three kinds pho to-catalysts of TiO2,BiVO4 and TiO2-BiVO4 composite,and the photo-catalytic degradation of ibuprofen was also carried out by combining three kinds of photo-catalysts with hydrogen peroxide respectively.The photo-catalytic properties of the three photo-catalysts were investigated.The results showed that under the condition of no hydrogen peroxide addition,the photo-catalytic properties of the three photo-catalysts were from TiO2-BiVO4 composite photo-catalyst,TiO2 photo-catalyst to BiVO4 photo-catalyst in descending order.After adding electron capture agent H2O2,the efficiency of photo-catalyst degradation of ibuprofen was improved,the recombination velocity of electron hole pair was reduced,and the photo-catalytic performance of the three photo-catalysts was TiO2-BiVO4 composite,BiVO4 and TiO2 in descending order.

Key words: TiO2, BiVO4, TiO2-BiVO4 composite, ibuprofen, photo-catalytic properties

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