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现代化工  2020, Vol. 40 Issue (3): 152-156,161    DOI: 10.16606/j.cnki.issn0253-4320.2020.03.033
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
(NH4)3PW11O39Sn/TiO2复合材料光催化降解染料废水的研究
岳琳1, 张迎2, 蒋永丰2, 孙文会1, 李再兴1, 廉静1, 罗晓1
1. 河北科技大学环境科学与工程学院, 河北省污染防治生物技术实验室, 河北 石家庄 050018;
2. 河北科技大学建筑工程学院, 河北 石家庄 050018
Study on application of (NH4)3PW11O39Sn/TiO2 composites in photocatalytic degradation of dye-containing wastewater
YUE Lin1, ZHANG Ying2, JIANG Yong-feng2, SUN Wen-hui1, LI Zai-xing1, LIAN Jing1, LUO Xiao1
1. Pollution Prevention Biotechnology Laboratory of Hebei Province, School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China;
2. School of Civil Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
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摘要 利用生物模板法制备TiO2,将(NH43PW11O39Sn负载于TiO2上,制备具有多孔结构的(NH43PW11O39Sn/TiO2复合材料。采用XRD、DRS、SEM、TEM和XPS等手段表征了(NH43PW11O39Sn/TiO2的微观形貌和结构。采用Tauc Plot法计算(NH43PW11O39Sn/TiO2的禁带宽度为2.45 eV,吸收波长达到506 nm。通过可见光催化性能实验考察了(NH43PW11O39Sn和TiO2的质量添加比对AR3R降解效果的影响。结果表明,当(NH43PW11O39Sn和TiO2的质量比为1:1时对AR3R的降解效果较好,可见光下反应30 min,降解率可达100%左右。自由基捕获实验结果表明,降解过程中h+和·OH起主要的氧化作用,·O-2起辅助作用。
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岳琳
张迎
蒋永丰
孙文会
李再兴
廉静
罗晓
关键词:  多金属氧酸盐  二氧化钛  光催化  染料废水    
Abstract: (NH4)3PW11O39Sn is loaded on TiO2 that is prepared through bio-template method,and the product (NH4)3PW11O39Sn/TiO2 composite with porous structure is obtained.The microstructure and morphology of the composite are characterized by XRD,DRS,SEM,TEM and XPS.Calculated by means of Tauc Plot method,the energy gap and absorption wavelength of (NH4)3PW11O39Sn/TiO2 are 2.45 eV and 506 nm,respectively.The effects of the dosage ratio of (NH4)3PW11O39Sn/TiO2,initial pH and the solution concentration on the photocatalytic degradation of AR3R are investigated by the visible light photocatalytic performance experiments.The results show that the degradation efficiency of AR3R reaches the best over the composite that the mass ratio of (NH4)3PW11O39Sn and TiO2 is 1:1.The degradation rate of AR3R can reach around 100% after reacting for 30 min under visible light.It is demonstrated by free radical capture experiments that h+ and·OH are the key active radicals while·O2- plays a supplementary role during the photocatalytic degradation process.
Key words:  polyoxometalates    TiO2    photocatalysis    dye-containing wastewater
收稿日期:  2019-05-13      修回日期:  2020-01-15          
ZTFLH:  X703.1  
基金资助: 天津市水质科学与技术重点实验室开放研究基金资助项目(TJKLAST-ZD-2016-02);河北省重点研发计划自筹项目(17273612)
通讯作者:  李再兴(1972-),男,博士,教授,研究方向为水处理,通讯联系人,li_zaixing@163.com。    E-mail:  li_zaixing@163.com
作者简介:  岳琳(1980-),女,博士,副教授,主要从事水污染控制工程方向的研究,yuelintj@126.com
引用本文:    
岳琳, 张迎, 蒋永丰, 孙文会, 李再兴, 廉静, 罗晓. (NH4)3PW11O39Sn/TiO2复合材料光催化降解染料废水的研究[J]. 现代化工, 2020, 40(3): 152-156,161.
YUE Lin, ZHANG Ying, JIANG Yong-feng, SUN Wen-hui, LI Zai-xing, LIAN Jing, LUO Xiao. Study on application of (NH4)3PW11O39Sn/TiO2 composites in photocatalytic degradation of dye-containing wastewater. Modern Chemical Industry, 2020, 40(3): 152-156,161.
链接本文:  
https://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2020.03.033  或          https://www.xdhg.com.cn/CN/Y2020/V40/I3/152
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