KMS Shanghai Institute of Ceramics，Chinese Academy of Sciences
| Surface hydrogen bonds assisted meso-porous WO3photocatalysts for high selective oxidation of benzylalcohol to benzylaldehyde | |
| Su, Yang1,2; Han, Zhongkang2,3; Zhang, Ling1; Wang, Wenzhong1; Duan, Manyi3; Li, Xiaoman1,2; Zheng, Yali1,2; Wang, Yanggang4; Lei, Xiaoling3 | |
| 2017 | |
| Source Publication | Applied Catalysis B: Environmental
 |
| ISSN | 09263373 |
| Volume | 217Pages:108-114 |
| Abstract | 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 WO3photocatalyst (Fm-WO3) exhibits significant selectivity (∼99%) and conversion (∼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 O2and 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 [rad]OH by holes which can be considered as another way to oxidize benzyalcohol. Finally, a generalized reaction mechanism for selective photo-oxidation has been proposed. © 2017 Elsevier B.V. |
| DOI | 10.1016/j.apcatb.2017.05.075 |
| EI Accession Number | 20172303731003 |
| EI Keywords | Hydrogen bonds |
| EI Classification Number | 525.5 Energy Conversion Issues - 657.1 Solar Energy and Phenomena - 801.4 Physical Chemistry - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sic.ac.cn/handle/331005/25934 |
| Collection | 中国科学院上海硅酸盐研究所 |
| Corresponding Author | Zhang, Ling |
| Affiliation | 1.State Key Laboratory of High Performance Ceramics and Super fine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai; 200050, China; 2.University of Chinese Academy of Sciences, Beijing; 100049, China; 3.Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 2019 JiaLuo Road, Shanghai; 200050, China; 4.Department of Chemistry, Tsinghua University, Beijing; 100084, China |
| Recommended Citation GB/T 7714 | Su, Yang,Han, Zhongkang,Zhang, Ling,et al. Surface hydrogen bonds assisted meso-porous WO3photocatalysts for high selective oxidation of benzylalcohol to benzylaldehyde[J]. Applied Catalysis B: Environmental,2017,217:108-114. |
| APA | Su, Yang.,Han, Zhongkang.,Zhang, Ling.,Wang, Wenzhong.,Duan, Manyi.,...&Lei, Xiaoling.(2017).Surface hydrogen bonds assisted meso-porous WO3photocatalysts for high selective oxidation of benzylalcohol to benzylaldehyde.Applied Catalysis B: Environmental,217,108-114. |
| MLA | Su, Yang,et al."Surface hydrogen bonds assisted meso-porous WO3photocatalysts for high selective oxidation of benzylalcohol to benzylaldehyde".Applied Catalysis B: Environmental 217(2017):108-114. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment