雾封层型氮掺杂二氧化钛尾气降解性能研究

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英文篇名：Evaluation of exhaust degradation performance for photocatalytic fog seal containing nitrogen-doped titanium dioxide 作者：何建彬 ; 孙德环 ; 刘思铨 ; 丑志静 ; 许鹰 英文作者：He Jianbin;Sun Dehuan;Liu Siquan;Chou Zhijing;Xu Ying;School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architechture;China Communications One Public Bureau Group Third Engineering Co.,Ltd.;Beijing Urban Transportation Infrastructure Engineering Technology Research Center; 关键词：氮掺杂二氧化钛 ; 雾封层 ; 降解效能 英文关键词：N-TiO_2;;fog seal;;degradation efficiency 中文刊名：山西建筑 英文刊名：Shanxi Architecture 机构：北京建筑大学土木与交通工程学院;中交一公局集团第三工程有限公司;北京市城市交通基础设施建设工程技术研究中心; 出版日期：2019-01-01 出版单位：山西建筑 年：2019 期：01 基金：长江学者和创新团队发展计划资助(IRT_17R06) 语种：中文; 页：120-121 页数：2 CN：14-1279/TU ISSN：1009-6825 分类号：X734.2;U416.2

摘要

将纳米TiO_2掺加于雾封层中喷涂在道路表面,不仅可用于道路预防性养护,还可降解汽车尾气,具有重要的应用价值。选择氮掺杂二氧化钛与50 nm锐钛矿二氧化钛,应用方式采用水溶液型和雾封层型,基于室外尾气降解试验与车轮磨耗试验,研究两种纳米TiO_2对NO_X与CO的降解效能并进行降解耐久性分析。结果表明:相较普通纳米TiO_2,雾封层型氮掺杂二氧化钛对NO_X与CO降解效能分别提高44. 8%和38. 8%;车轮磨耗试验后,雾封层型对NO_X与CO降解效能比水溶液型高4. 0%和3. 7%,说明雾封层型氮掺杂二氧化钛的降解效能优良且降解耐久性较好。
        Photocatalytic fog sealsare prepared by adding the nano titanium dioxide in fog seal emulsions. It can not only be used for road preventive maintenance,but also degrade automobile exhaust gas,so it has important application value. Two types of TiO_2,N-TiO_2 and 50 nm anatase TiO_2 particles were selected and suspended in water and emulsified asphalt. Based on the outdoor exhaust gas degradation test and wheel wear test,the degradation performance of NO_X and CO was tested and the degradation durability was analyzed. The results indicated that the degradation efficiency of photocatalytic fog seal containing N-doped TiO_2 for NO_X and CO were increased by 44. 8% and 38. 8% compared with anatase TiO_2. After the wearing test,its degradation efficiency of NO_X and CO were 4. 0% and 3. 7% higher than that of aqueous solution. It showed the durability of degradation efficiency for fog seal was significantly better than that of the aqueous solution.

引文

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