工业水处理 ›› 2019, Vol. 39 ›› Issue (2): 50-54. doi: 10.11894/1005-829x.2019.39(2).050

• 试验研究 • 上一篇    下一篇

TiO2-GR/MgO的制备及降解刚果红性能研究

饶砚迪1, 盛义平1, 周城2, 刘艳芳1, 张天虎3   

  1. 1. 燕山大学环境与化学工程学院, 河北秦皇岛 066004;
    2. 秦皇岛玻璃工业研究设计院, 河北秦皇岛 066001;
    3. 燕山大学建筑工程与力学学院, 河北秦皇岛 066004
  • 收稿日期:2018-11-30 出版日期:2019-02-20 发布日期:2019-03-15
  • 通讯作者: 张天虎,E-mail:thzhang@ysu.edu.cn。 E-mail:thzhang@ysu.edu.cn
  • 作者简介:饶砚迪(1989-),助理实验师。E-mail:ryd1989@ysu.edu.cn。
  • 基金资助:
    河北省自然科学基金资助项目(B2015203300);秦皇岛市科学技术研究与发展计划项目(201602A013);中国博士后科学基金项目(2017M611189)

Research on the preparation of a new type of composite photocatalyst TiO2-GR/MgO and its degradation capability for Congo red

Rao Yandi1, Sheng Yiping1, Zhou Cheng2, Liu Yanfang1, Zhang Tianhu3   

  1. 1. School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China;
    2. Qinhuangdao Glass Industry Research and Design Institute, Qinhuangdao 066001, China;
    3. School of Civil Engineering and Mechanics, Yanshan University, Qinhuangdao 066004, China
  • Received:2018-11-30 Online:2019-02-20 Published:2019-03-15

摘要: 采用超声溶胶-凝胶法制备了新型复合光催化剂TiO2-GR/MgO。采用XRD、SEM、PL、UV-Vis等手段对制备的催化剂进行了表征,并在太阳光下考察了TiO2-GR/MgO对刚果红的光催化降解性能。结果表明:在TiO2-GR/MgO中,TiO2只有锐钛矿型,石墨和MgO的加入有效阻碍了电子/空穴的复合速率,拓宽了复合光催化剂的光谱响应范围,提高了催化剂对可见光的吸收效率。当反应时间为80 min,TiO2-GR/MgO投加量为2.5 g/L时,在太阳光照射下刚果红去除率可达97.6%。

关键词: 光催化氧化, 掺杂, TiO2, MgO, 石墨, 刚果红

Abstract: A new composite photocatalyst TiO2-GR/MgO has been prepared by ultrasound sol-gel method,characterized by means of XRD,SEM,PL and UV-Vis,and the photocatalytic degradation capability of TiO2-GR/MgO for Congo red investigated under solar light. The results show that anatase is the only type of TiO2 in TiO2-graphite/MgO. The addition of graphite and MgO effectively hinders the electron/hole recombination rate,broadens the spectral response range of the composite photocatalyst,and improves the absorption efficiency for the visible light. When the reaction time is 80 min and TiO2-GR/MgO dosage 2.5 g/L,the removing rate of Cango red under solar light irradiation reaches 97.6%.

Key words: photocatalytic oxidation, doping, TiO2, MgO, graphite, Congo red

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