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| Surface hydrogen bonds assisted meso-porous WO3 photocatalysts for high selective oxidation of benzylalcohol to benzylaldehyde | |
| Su, Y; Han, ZK; Zhang, L; Wang, WZ; Duan, MY; Li, XM; Zheng, YL; Wang, YG; Lei, XL | |
| 2017 | |
| 发表期刊 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| ISSN | 0926-3373 |
| 卷号 | 217期号:-页码:108-114 |
| 文章类型 | 期刊论文 |
| 摘要 | Selective photo:oxidation of alcohols displays high potential in solar energy conversion and reducing environmental pollution, yet its selectivity and conversion in aqueous phase is still far from expectation. Here we report a fluorinated meso-porous WO3 photocatalyst (Fm-WO3) exhibits significant selectivity (similar to 99%) and conversion (similar to 57%) in transforming benzylalcohol to benzaldehyde in the aqueous solution under the simulated sunlight irradiation. This high reactivity is attributed to the synergistic effect between meso-porous nanostructure and surface fluorination, where meso-porous structure supplies, active sites to promote the multi electron reduction of O-2 and the surface fluorination assists the transmission of photogenerated holes. First principles calculations further suggest that surface fluorination brings in an unoccupied impurity state in the band structure of WO3, which exhibits a strong correlation with the hydroxyl group of benzyalcohol and thus bridges the interaction between surfaces and alcohols. Meanwhile, the fluorination promotes the generation of (OH)-O-center dot by holes which can be considered as another way to oxidize benzyalcohol. Finally, a generalized reaction mechanism for selective photo-oxidation has been proposed. (C) 2017 Elsevier B.V. All rights reserved. |
| 关键词 | Visible-light Irradiation Benzyl Alcohol Catalytic-activity Water Oxidation Benzaldehyde Methanol Oxide Tio2 Photooxidation Glutaraldehyde |
| DOI | 10.1016/j.apcatb.2017.05.075 |
| 关键词[WOS] | VISIBLE-LIGHT IRRADIATION ; BENZYL ALCOHOL ; CATALYTIC-ACTIVITY ; WATER OXIDATION ; BENZALDEHYDE ; METHANOL ; OXIDE ; TIO2 ; PHOTOOXIDATION ; GLUTARALDEHYDE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000405158000012 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.sinap.ac.cn/handle/331007/28839 |
| 专题 | 中科院上海应用物理研究所2011-2018年 |
| 推荐引用方式 GB/T 7714 | Su, Y,Han, ZK,Zhang, L,et al. Surface hydrogen bonds assisted meso-porous WO3 photocatalysts for high selective oxidation of benzylalcohol to benzylaldehyde[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2017,217(-):108-114. |
| APA | Su, Y.,Han, ZK.,Zhang, L.,Wang, WZ.,Duan, MY.,...&Lei, XL.(2017).Surface hydrogen bonds assisted meso-porous WO3 photocatalysts for high selective oxidation of benzylalcohol to benzylaldehyde.APPLIED CATALYSIS B-ENVIRONMENTAL,217(-),108-114. |
| MLA | Su, Y,et al."Surface hydrogen bonds assisted meso-porous WO3 photocatalysts for high selective oxidation of benzylalcohol to benzylaldehyde".APPLIED CATALYSIS B-ENVIRONMENTAL 217.-(2017):108-114. |
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