Engineering the Interfacial Contact between Bi2WO6 and WO3 Heterojunction Photoanode for Improved Charge Transportation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

7 Scopus Citations
View graph of relations

Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)11550–11558
Journal / PublicationEnergy & Fuels
Volume36
Issue number19
Online published28 Jul 2022
Publication statusPublished - 6 Oct 2022

Abstract

Bi2WO6/WO3 heterojunction thin films with low or high interfacial contact between the Bi2WO6 and WO3 photo-catalyst were employed as the photoanode for photoelectrochem-ical (PEC) reactions. By modulation of the transformation of WO3 to Bi2WO6 via a combined electrodeposition and hydrothermal reaction, a controlled degree of interfacial contact between Bi2WO6 and WO3 was achieved. An increase in the anodic photocurrent was observed from the PEC measurement, which was further supported by the conductive atomic force microscopy analysis under a low applied bias when the higher Bi2WO6/WO3 interfacial contact photoelectrode was examined. Experiment results suggested that the improvement was ascribed to a lower density of surface trap of the photoelectrons that reduced the charge recombination rate within the bulk photocatalyst.

Research Area(s)

  • P-N HETEROJUNCTION, PHOTOELECTROCHEMICAL PERFORMANCE, WATER OXIDATION, FILMS

Citation Format(s)

Engineering the Interfacial Contact between Bi2WO6 and WO3 Heterojunction Photoanode for Improved Charge Transportation. / Chung, Hoi Ying; Wong, Roong Jien; Amal, Rose et al.
In: Energy & Fuels, Vol. 36, No. 19, 06.10.2022, p. 11550–11558.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review