Enhanced photocatalytic performance of Ag@TiO2 for the gaseous acetaldehyde photodegradation under fluorescent lamp
文献类型：期刊论文
| 作者 | Zeng, Qinglong1; Xie, Xiaofeng; Wang, Xiao; Wang, Yan; Lu, Guanhong; Pui, David Y. H.; Sun, Jing |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2018 |
| 卷号 | 341页码:83 |
| 关键词 | Surface plasmon resonance Gaseous photocatalysis Ag@TiO2 core-shell heterostructure Reactive radicals Photocatalytic mechanism |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2018.02.015 |
| 英文摘要 | The ever increasing problem of air pollution has provoked the research and development of highly-efficient photocatalysts. Herein, Ag nanowires@TiO2 composite photocatalyst with improved photocatalytic performance was fabricated by a facile one-step solvothermal procedure. The formation of one-dimensional Ag nanowires@TiO2 core-shell nanostructures could not only broaden the light-absorbing range of TiO2 catalysts through the surface plasmon resonance effect of Ag nanowires, but also enable the effective separation of photoinduced electron-hole pairs. Under the irradiation of a 260 W fluorescent lamp, the composite with 0.5 wt % Ag nanowires exhibited the highest photocatalytic activity in short contact time (4.8 min), and the corresponding gaseous acetaldehyde removal ratio was 72%, which was much higher than that of bare TiO2 (37%). The photocatalyst also showed ultrastable activity in the 15 weeks usage, which ensured their practical applications in the air purification field. An in-depth mechanism of the photodecomposition of acetaldehyde was proposed on the basis of the electron spin resonance (ESR) tests and the scavenger experiments. O-center dot(2)- reactive radicals was found to play a predominant role in the oxidation and decomposition of acetaldehyde. The outstanding performance of the composite materials and the thoroughly understanding of the reaction mechanism would cast light on the purposively design and optimization of TiO2-based catalysts. |
| 学科主题 | Engineering, Environmental ; Engineering, Chemical |
| WOS记录号 | WOS:000445561100009 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | This work was financially supported by the National Key Research and Development Program of China (2016YFA0203000), the Key Project of International Cooperation of the Chinese Academy of Sciences (GJHZ1656), and the National Natural Science Foundation of China (No. 51702347). ; This work was financially supported by the National Key Research and Development Program of China (2016YFA0203000), the Key Project of International Cooperation of the Chinese Academy of Sciences (GJHZ1656), and the National Natural Science Foundation of China (No. 51702347). |
| 源URL | [http://ir.sic.ac.cn/handle/331005/24875]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China 2.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China 3.Pui, David Y. H.] Univ Minnesota, Coll Sci & Engn, Minneapolis, MN 55455 USA |
| 推荐引用方式 GB/T 7714 | Zeng, Qinglong,Xie, Xiaofeng,Wang, Xiao,et al. Enhanced photocatalytic performance of Ag@TiO2 for the gaseous acetaldehyde photodegradation under fluorescent lamp[J]. CHEMICAL ENGINEERING JOURNAL,2018,341:83, 92. |
| APA | Zeng, Qinglong.,Xie, Xiaofeng.,Wang, Xiao.,Wang, Yan.,Lu, Guanhong.,...&Sun, Jing.(2018).Enhanced photocatalytic performance of Ag@TiO2 for the gaseous acetaldehyde photodegradation under fluorescent lamp.CHEMICAL ENGINEERING JOURNAL,341,83. |
| MLA | Zeng, Qinglong,et al."Enhanced photocatalytic performance of Ag@TiO2 for the gaseous acetaldehyde photodegradation under fluorescent lamp".CHEMICAL ENGINEERING JOURNAL 341(2018):83. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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