Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 16, 2020
Previous Article Next Article

An in situ assembled WO3–TiO2 vertical heterojunction for enhanced Z-scheme photocatalytic activity

Author affiliations

Abstract

The face-to-face contact of a vertical heterojunction is beneficial to charge interaction in photocatalysis. However, constructing a vertical heterojunction with uncompromised redox ability still remains a challenge. Herein, we report the successful synthesis of a WO3–TiO2 vertical heterojunction via establishing an internal electric field across the interface. Experimental investigation and computational simulations reveal that strong electric coupling occurs at the WO3–TiO2 interface forming an internal electric field. The internal electric field induces a Z-scheme charge-carrier transfer through the heterojunction under light irradiation, which leads to effective charge separation and maintains high reaction potentials of charge-carriers. The improved photocatalytic activity of the WO3–TiO2 heterojunction is proved by enhanced generation of reactive oxygen species and accelerated Escherichia coli (E. coli) disinfection. This study provides new insights into understanding and designing Z-scheme heterogeneous photocatalysts.

Graphical abstract: An in situ assembled WO3–TiO2 vertical heterojunction for enhanced Z-scheme photocatalytic activity

Back to tab navigation

Supplementary files

Article information


Submitted
25 Feb 2020
Accepted
31 Mar 2020
First published
09 Apr 2020

Nanoscale, 2020,12, 8775-8784
Article type
Paper

An in situ assembled WO3–TiO2 vertical heterojunction for enhanced Z-scheme photocatalytic activity

Y. Liu, X. Zeng, C. D. Easton, Q. Li, Y. Xia, Y. Yin, X. Hu, J. Hu, D. Xia, D. T. McCarthy, A. Deletic, C. Sun, J. Yu and X. Zhang, Nanoscale, 2020, 12, 8775
DOI: 10.1039/D0NR01611J

Social activity

Search articles by author

Spotlight

Advertisements