不同金属离子改性下纳米TiO2对HC降解效果影响
Effect of Nano-TiO2 on the Degradation of HC Modified by Different Metal Ions
席典亮 1王帅宇1
作者信息
- 1. 安徽理工大学 土木建筑学院,安徽 淮南 232000
- 折叠
摘要
为了降低尾气对道路周边环境的影响,光催化降解技术作为新型处理技术已成为研究热点.为了提高尾气的降解效率,采用溶胶-凝胶法对纳米TiO2 和不同浓度金属离子Fe3+、Ag+、La3+掺杂,并使用自制尾气降解反应装置进行尾气降解实验.结果表明:在Fe3+、Ag+、La3+掺杂下提高了纳米TiO2 对HC的催化效率,且在La3+的掺杂量在1%时,对HC的降解效率最明显,可达10.9%;Fe3+掺量在1%时,尾气的降解速率最高可达25%.
Abstract
In order to reduce the impact of exhaust gas on the surrounding environment of the road,as a new treatment technology,photocatalytic degradation technology has become a research hotspot.In order to improve the degradation efficiency of exhaust gas,nano-TiO2 and different concentrations of metal ions Fe3+,Ag+,La3+are doped by sol-gel method,and the self-made exhaust gas degradation reaction de-vice is used to open the exhaust gas degradation experiment.The results show that the catalytic efficiency of nano-TiO2 on HC is improved under the doping of Fe3+,Ag+and La3+,and the degradation efficien-cy of HC is the most obvious when the doping amount of La3+is1%,which can reach 10.9%.When the content of Fe3+is 1%,the degradation rate of exhaust gas can reach up to 25%.
关键词
光催化/尾气降解/改性纳米TiO2/路面材料Key words
photocatalysis/degradation of exhaust gas/modified nano-TiO2/pavement materials引用本文复制引用
出版年
2025
NETL
NSTL
万方数据