WS2/g-C3N4 composite as an efficient heterojunction photocatalyst for biocatalyzed artificial photosynthesis | |
Zeng, Peng1,2; Ji, Xiaoyuan1,3; Su, Zhiguo1; Zhang, Songping1 | |
刊名 | RSC ADVANCES |
2018 | |
卷号 | 8期号:37页码:20557-20567 |
ISSN号 | 2046-2069 |
DOI | 10.1039/c8ra02807a |
英文摘要 | A heterogeneous WS2/g-C3N4 composite photocatalyst was prepared by a facile ultrasound-assisted hydrothermal method. The WS2/g-C3N4 composite was used for photocatalytic regeneration of NAD(+) to NADH, which were coupled with dehydrogenases for sustainable bioconversion of CO2 to methanol under visible light irradiation. Compared with pristine g-C3N4 and the physical mixture of WS2 and g-C3N4, the fabricated WS2/g-C3N4 composite catalyst with 5 wt% of WS2 showed the highest activity for methanol synthesis. The methanol productivity reached 372.1 mol h(-1) g(cat)(-1), which is approximately 7.5 times higher than that obtained using pure g-C3N4. For further application demonstration, the activity of the WS2/g-C3N4 composite catalyst toward photodegradation of Rhodamine B (RhB) was evaluated. RhB removal ratio approaching 100% was achieved in 1 hour by using the WS2/g-C3N4 composite catalyst with 5 wt% of WS2, at an apparent degradation rate approximately 2.6 times higher than that of pure g-C3N4. Based on detailed investigations on physiochemical properties of the photocatalysts, the significantly enhanced reaction efficiency of the WS2/g-C3N4 composite was considered to be mainly benefiting from the formation of a heterojunction interface between WS2 and g-C3N4. Upon visible-light irradiation, the photo-induced electrons can transfer from the conduction band of g-C3N4 to WS2, thus recombination of electrons and holes was decreased and the photo-harvesting efficiency was enhanced. |
资助项目 | National Natural Science Foundation of China[21676276] ; National Natural Science Foundation of China[91534126] |
WOS关键词 | Carbon Nitride Nanosheets ; Visible-light Irradiation ; Boron-doped G-c3n4 ; Hydrogen Evolution ; Graphitic C3n4 ; Catalytic-activity ; Highly Efficient ; Performance ; Dioxide ; Regeneration |
WOS研究方向 | Chemistry |
语种 | 英语 |
出版者 | ROYAL SOC CHEMISTRY |
WOS记录号 | WOS:000434694300011 |
资助机构 | National Natural Science Foundation of China |
内容类型 | 期刊论文 |
源URL | [http://ir.ipe.ac.cn/handle/122111/24933] |
专题 | 过程工程研究所_多相复杂系统国家重点实验室 中国科学院过程工程研究所 |
通讯作者 | Zhang, Songping |
作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Sun Yat Sen Univ, Sch Pharmaceut Sci Shenzhen, Guangzhou 510275, Guangdong, Peoples R China |
推荐引用方式 GB/T 7714 | Zeng, Peng,Ji, Xiaoyuan,Su, Zhiguo,et al. WS2/g-C3N4 composite as an efficient heterojunction photocatalyst for biocatalyzed artificial photosynthesis[J]. RSC ADVANCES,2018,8(37):20557-20567. |
APA | Zeng, Peng,Ji, Xiaoyuan,Su, Zhiguo,&Zhang, Songping.(2018).WS2/g-C3N4 composite as an efficient heterojunction photocatalyst for biocatalyzed artificial photosynthesis.RSC ADVANCES,8(37),20557-20567. |
MLA | Zeng, Peng,et al."WS2/g-C3N4 composite as an efficient heterojunction photocatalyst for biocatalyzed artificial photosynthesis".RSC ADVANCES 8.37(2018):20557-20567. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论