KMS Shanghai Institute of Ceramics，Chinese Academy of Sciences
| Enhanced photocatalytic CO2 reduction to methane over WO(3)(.)0.33H(2)O via Mo doping | |
| Wang, Haipeng; Zhang, Ling; Wang, Kefu; Sun, Xiang; Wang, Wenzhong | |
| 2019-04-01 | |
| Source Publication | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| ISSN | 0926-3373 |
| Volume | 243Pages:771 |
| Subtype | Article |
| Abstract | Photocatalytic CO2 reduction is a promising strategy to address environmental and energy issues that are vexing the modem society. However, the efficiency of CO2 photoreduction into fuels such as methane (CH4) is substantially restricted by high CO2 activation barrier and inefficient proton supply. Here, Mo-doped WO(3)(.)0.33H(2)O nanorods have been synthesized and Mo doping in WO(3)(.)0.33H(2)O dramatically increased the CH4 production yield by 5.2 times from 1.02 to 5.3 mu mol g(cat)(-1) h(-1) under water vapor without the assistant of any sacrificial agent or noble metal. The Mo doping proves capable of facilitating CO2 activation by improving the ability to store and localize photogenerated electrons and boosting the transfer of photoexcited electrons to adsorbed CO2. In addition, proton and electron insertion converts WO(3)(.)0.33H(2)O into tungsten bronze (H(x)WO(3)(.)0.33H(2)O) under light irradiation, guaranteeing required electrons and protons for CO2 reduction. The enhanced water oxidation of Mo-doped WO(3)(.)0.33H(2)O promotes proton supply and insertion process, improving the hydrogenation process of the carbon intermediate to generate CH4. The combined action of the enhanced CO2 activation and water oxidation with efficient proton and electron insertion improves the performance of CO2 photoreduction to CH4. This work might help to shed light on deeper insights into the design of CO2 photoreduction catalysts. |
| Keyword | CO2 photoreduction Mo doping CO2 activation Water oxidation Proton insertion |
| DOI | 10.1016/j.apcatb.2018.11.021 |
| Language | 英语 |
| WOS Research Area | Chemistry ; Engineering |
| Publisher | ELSEVIER SCIENCE BV |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sic.ac.cn/handle/331005/27250 |
| Collection | 中国科学院上海硅酸盐研究所 |
| Recommended Citation GB/T 7714 | Wang, Haipeng,Zhang, Ling,Wang, Kefu,et al. Enhanced photocatalytic CO2 reduction to methane over WO(3)(.)0.33H(2)O via Mo doping[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2019,243:771. |
| APA | Wang, Haipeng,Zhang, Ling,Wang, Kefu,Sun, Xiang,&Wang, Wenzhong.(2019).Enhanced photocatalytic CO2 reduction to methane over WO(3)(.)0.33H(2)O via Mo doping.APPLIED CATALYSIS B-ENVIRONMENTAL,243,771. |
| MLA | Wang, Haipeng,et al."Enhanced photocatalytic CO2 reduction to methane over WO(3)(.)0.33H(2)O via Mo doping".APPLIED CATALYSIS B-ENVIRONMENTAL 243(2019):771. |
| 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