Difference of photodegradation characteristics between single and mixed VOC pollutants under simulated sunlight irradiation
文献类型：期刊论文
| 作者 | Wang, Zhuang; Xie, Xiaofeng; Wang, Xiao; Mahmood, Asad; Qiu, Hanxun; Sun, Jing |
| 刊名 | JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
 |
| 出版日期 | 2019-11-01 |
| 卷号 | 384 |
| 关键词 | Photocatalysis rGO@TiO2 VOC mixture removal P-xylene Benzene derivatives |
| ISSN号 | 1010-6030 |
| DOI | 10.1016/j.jphotochem.2019.112029 |
| 文献子类 | Article |
| 英文摘要 | In realistic Volatile organic compounds (VOC)-containing polluted air, VOCs often do not exist alone, but different VOCs coexist. The interaction between different VOCs affects their photodegradation. However, few studies have focused on the photodegradation of mixed VOCs. Herein, rGO-TiO2 photocatalysts were synthesized by a modified refluxing-solvothermal method, and applied to photocatalytic degradation of single VOC (p-xylene and ethylene) and VOC mixture (containing benzene, toluene, p-xylene). It was found that rGO-TiO2 possessed higher photocatalytic degradation activity for single VOC and VOC mixture than pure TiO2. The increased single VOC adsorption capacity, more efficient light harvesting ability, and enhanced separation efficiency of electron-hole were responsible for improved degradation performance of rGO-TiO2. In addition, superoxide radicals played a more important role than hydroxyl radicals for removing both p-xylene and ethylene. Interestingly, commercial TiO2 (P25) underwent decreased efficiency (80.0% to 63.8%) in photodegrading from single p-xylene to p-xylene in VOC mixture, while it was remained unchanged (93.5%-93.0%) for T0.2G (0.2% mass ratio of reduced graphene oxide to TiO2). This could be mainly attributed to sufficient adsorption sites provided by rGO sheets to mitigate competitive adsorption. Simultaneously, its photocatalytic activity showed no obvious decrease after five photodegradation cycles of mixed VOCs. These results suggested great potential of efficient photodegradation of VOC mixture by rGO-TiO2. |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| 源URL | [http://ir.sic.ac.cn/handle/331005/26748]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Wang, Zhuang,Xie, Xiaofeng,Wang, Xiao,et al. Difference of photodegradation characteristics between single and mixed VOC pollutants under simulated sunlight irradiation[J]. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY,2019,384. |
| APA | Wang, Zhuang,Xie, Xiaofeng,Wang, Xiao,Mahmood, Asad,Qiu, Hanxun,&Sun, Jing.(2019).Difference of photodegradation characteristics between single and mixed VOC pollutants under simulated sunlight irradiation.JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY,384. |
| MLA | Wang, Zhuang,et al."Difference of photodegradation characteristics between single and mixed VOC pollutants under simulated sunlight irradiation".JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY 384(2019). |
入库方式： OAI收割
来源：上海硅酸盐研究所
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