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现代化工  2021, Vol. 41 Issue (12): 79-82,87    DOI: 10.16606/j.cnki.issn0253-4320.2021.12.016
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
Zn改性TiO2催化臭氧氧化降解溶液中p-CBA的研究
孟一帆1,2, 孙时1,3, 乔函1, 李薇4, 禹耕之1, 杨忆新1, 罗明生1
1. 燃料清洁化及高效催化减排技术北京市重点实验室, 北京石油化工学院, 北京 102617;
2. 北京工业大学环境与能源工程学院, 北京 100124;
3. 中国原子能科学研究院, 北京 102413;
4. 深圳市城市空间规划建筑设计有限公司, 广东 深圳 518035
Modification of TiO2 by Zn for catalytic ozonation of p-CBA in aqueous solution
MENG Yi-fan1,2, SUN Shi1,3, QIAO Han1, LI Wei4, YU Geng-zhi1, YANG Yi-xin1, LUO Ming-sheng1
1. National Chemical and Chemical Demonstration Center, Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, Beijing Institute of Petrochemical Technology, Beijing 102617, China;
2. College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China;
3. China Institute of Atomic Energy, Beijing 102413, China;
4. Shenzhen Urbanspace Planning and Architectural Design Co., Ltd., Shenzhen 518035, China
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摘要 采用浸渍法制备Zn掺杂改性TiO2催化剂,以对氯苯甲酸(p-CBA)为目标污染物,考察Zn/TiO2的催化臭氧氧化效能,结果发现Zn掺杂比为0.5%的催化剂具有最佳活性。利用SEM、XRD、FT-IR、BET和等电点性质对改性催化剂进行表征,结果表明,随着Zn掺杂比的增大,催化剂的比表面积急剧降低,但等电点、表面羟基明显增多,推测等电点和表面羟基等性质的改变是导致催化剂活性增强的重要因素。另外,当溶液pH在催化剂的等电点附近时,Zn/TiO2的催化臭氧氧化效率较高。
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孟一帆
孙时
乔函
李薇
禹耕之
杨忆新
罗明生
关键词:  催化  臭氧  TiO2  Zn  p-CBA    
Abstract: Zn-doped TiO2 is prepared via the impregnation method and used in the catalytic ozonation process for the removal of p-chlorobenzoic acid (p-CBA) from aqueous solution.It is shown that Zn/TiO2 catalyst with a Zn doping ratio of 0.5% has the best activity.The modified catalysts are characterized by SEM, XRD, FT-IR, BET and pHPZC.It is found that specific surface area of Zn/TiO2 decreases sharply with the increase of Zn doping ratio.By contrast, the pHPZC value and the surface hydroxyl groups of catalysts are increased by the modification process, which may be the reason for the enhanced catalytic activity.In addition, Zn/TiO2 catalytic ozonation process runs more efficiently when the solution pH is close to the pHPZC of catalysts.
Key words:  catalysis    ozone    TiO2    Zn    p-CBA
收稿日期:  2021-01-19      修回日期:  2021-09-29           出版日期:  2021-12-20
ZTFLH:  X703  
基金资助: 国家自然科学基金(51508353;21676027);北京市属高校高水平教师队伍建设支持计划高水平创新团队建设计划项目(IDHT20180508)
通讯作者:  杨忆新(1979-),女,博士,副教授,研究方向为高级氧化技术,通讯联系人,young_wst@163.com。    E-mail:  young_wst@163.com
作者简介:  孟一帆(1996-),女,硕士研究生,研究方向为催化臭氧氧化技术(工业水处理),meng_ifan@163.com
引用本文:    
孟一帆, 孙时, 乔函, 李薇, 禹耕之, 杨忆新, 罗明生. Zn改性TiO2催化臭氧氧化降解溶液中p-CBA的研究[J]. 现代化工, 2021, 41(12): 79-82,87.
MENG Yi-fan, SUN Shi, QIAO Han, LI Wei, YU Geng-zhi, YANG Yi-xin, LUO Ming-sheng. Modification of TiO2 by Zn for catalytic ozonation of p-CBA in aqueous solution. Modern Chemical Industry, 2021, 41(12): 79-82,87.
链接本文:  
https://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2021.12.016  或          https://www.xdhg.com.cn/CN/Y2021/V41/I12/79
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