NWIPB OpenIR
Enhanced visible-light-driven photocatalytic sterilization of tungsten trioxide by surface-engineering oxygen vacancy and carbon matrix
Wang, Rong ; Zhang, Wentao ; Zhu, Wenxin ; Yan, Lingzhi ; Li, Sihang ; Chen, Kai ; Hu, Na ; Suo, Yourui ; Wang, Jianlong
2018-09-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
AbstractDefect WO3-carbon hybrid nanosheets (D-WO3@C), synthesized by a facile hydrothermal method, is utilized as an effective visible-light driven photocatalyst for sustainable inactivation of bacteria. Detailed characterization through SEM-EDS, XRD, FT-IR, HRTEM, and XPS confirmed the formation of the nanohybrids. As a result, the as-synthesized D-WO3@C exhibited the best sterilization efficiency among all of the WO3 photocatalysts, and 7 log inactivation of E. coli or S. aureus was obtained after treating samples for 45 min with 1000 mu g/mL D-WO3@C. It was found that D-WO3@C exhibited enhanced visible-light-driven photocatalytic sterilization in killing bacteria compared with D-WO3 and P-WO3. The results show that the oxygen vacancies and carbon matrix were able to promote photocatalytic performance by triggering a faster interfacial transfer and a higher efficient separation of electron-hole pairs, which most likely is the reason behind the improved bactericidal effect. Furthermore, fluorescent-based cell viability/death tests and SEM technology were employed to demonstrate the lethal effect as well as the integrity of bacterial membranes during photocatalytic process. Photoelectrochemical techniques and UV-visible diffuse reflectance revealed the efficient separation of electron-hole pairs between D-WO3 and carbon matrix. More importantly, after being tested in four cycles, D-WO3@C showed good photocatalytic performance due to its chemical stability. The excellent properties associated with the novel D-WO3/C indicated that they could be considered as a promising light-visible driven photocatalyst to remove, in practice, microbial contamination of water.
PublisherELSEVIER SCIENCE SA
Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/39310
Collection中国科学院西北高原生物研究所
Recommended Citation
GB/T 7714
Wang, Rong,Zhang, Wentao,Zhu, Wenxin,et al. Enhanced visible-light-driven photocatalytic sterilization of tungsten trioxide by surface-engineering oxygen vacancy and carbon matrix[J]. CHEMICAL ENGINEERING JOURNAL,2018.
APA Wang, Rong.,Zhang, Wentao.,Zhu, Wenxin.,Yan, Lingzhi.,Li, Sihang.,...&Wang, Jianlong.(2018).Enhanced visible-light-driven photocatalytic sterilization of tungsten trioxide by surface-engineering oxygen vacancy and carbon matrix.CHEMICAL ENGINEERING JOURNAL.
MLA Wang, Rong,et al."Enhanced visible-light-driven photocatalytic sterilization of tungsten trioxide by surface-engineering oxygen vacancy and carbon matrix".CHEMICAL ENGINEERING JOURNAL (2018).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wang, Rong]'s Articles
[Zhang, Wentao]'s Articles
[Zhu, Wenxin]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang, Rong]'s Articles
[Zhang, Wentao]'s Articles
[Zhu, Wenxin]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang, Rong]'s Articles
[Zhang, Wentao]'s Articles
[Zhu, Wenxin]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.