Band offsets of novel CoTiO3/Ag3VO4 heterojunction measured by X-ray photoelectron spectroscopy

© 2014 Elsevier B.V. All rights reserved. The energy band diagram and band offsets of the novel CoTiO3/Ag3VO4 heterojunction photocatalyst are investigated by X-ray photoelectron spectroscopy for the first time. Excluding the strain effect, the valence-band and conduction-band offsets are determined...

Full description

Saved in:
Bibliographic Details
Main Authors: Wangkawong,K., Tantraviwat,D., Phanichphant,S., Inceesungvorn,B.
Format: Article
Published: Elsevier 2015
Subjects:
Online Access:http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84920682981&origin=inward
http://cmuir.cmu.ac.th/handle/6653943832/38851
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Chiang Mai University
id th-cmuir.6653943832-38851
record_format dspace
spelling th-cmuir.6653943832-388512015-06-16T07:54:24Z Band offsets of novel CoTiO3/Ag3VO4 heterojunction measured by X-ray photoelectron spectroscopy Wangkawong,K. Tantraviwat,D. Phanichphant,S. Inceesungvorn,B. Surfaces, Coatings and Films © 2014 Elsevier B.V. All rights reserved. The energy band diagram and band offsets of the novel CoTiO3/Ag3VO4 heterojunction photocatalyst are investigated by X-ray photoelectron spectroscopy for the first time. Excluding the strain effect, the valence-band and conduction-band offsets are determined to be 0.2 ± 0.3 eV and -0.6 ± 0.3 eV, respectively. The CoTiO3/Ag3VO4 composite forms a type-II heterojunction, for which the photogenerated charge carriers could be effectively separated. The results suggest that determination of the energy band structure is crucial for understanding the photogenerated charge transfer mechanism at the interfaces, hence the corresponding photocatalytic activity and would also be beneficial to the design of new and efficient heterostructure-based photocatalysts. 2015-06-16T07:54:24Z 2015-06-16T07:54:24Z 2015-01-01 Article 01694332 2-s2.0-84920682981 10.1016/j.apsusc.2014.11.020 http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84920682981&origin=inward http://cmuir.cmu.ac.th/handle/6653943832/38851 Elsevier
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Surfaces, Coatings and Films
spellingShingle Surfaces, Coatings and Films
Wangkawong,K.
Tantraviwat,D.
Phanichphant,S.
Inceesungvorn,B.
Band offsets of novel CoTiO3/Ag3VO4 heterojunction measured by X-ray photoelectron spectroscopy
description © 2014 Elsevier B.V. All rights reserved. The energy band diagram and band offsets of the novel CoTiO3/Ag3VO4 heterojunction photocatalyst are investigated by X-ray photoelectron spectroscopy for the first time. Excluding the strain effect, the valence-band and conduction-band offsets are determined to be 0.2 ± 0.3 eV and -0.6 ± 0.3 eV, respectively. The CoTiO3/Ag3VO4 composite forms a type-II heterojunction, for which the photogenerated charge carriers could be effectively separated. The results suggest that determination of the energy band structure is crucial for understanding the photogenerated charge transfer mechanism at the interfaces, hence the corresponding photocatalytic activity and would also be beneficial to the design of new and efficient heterostructure-based photocatalysts.
format Article
author Wangkawong,K.
Tantraviwat,D.
Phanichphant,S.
Inceesungvorn,B.
author_facet Wangkawong,K.
Tantraviwat,D.
Phanichphant,S.
Inceesungvorn,B.
author_sort Wangkawong,K.
title Band offsets of novel CoTiO3/Ag3VO4 heterojunction measured by X-ray photoelectron spectroscopy
title_short Band offsets of novel CoTiO3/Ag3VO4 heterojunction measured by X-ray photoelectron spectroscopy
title_full Band offsets of novel CoTiO3/Ag3VO4 heterojunction measured by X-ray photoelectron spectroscopy
title_fullStr Band offsets of novel CoTiO3/Ag3VO4 heterojunction measured by X-ray photoelectron spectroscopy
title_full_unstemmed Band offsets of novel CoTiO3/Ag3VO4 heterojunction measured by X-ray photoelectron spectroscopy
title_sort band offsets of novel cotio3/ag3vo4 heterojunction measured by x-ray photoelectron spectroscopy
publisher Elsevier
publishDate 2015
url http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84920682981&origin=inward
http://cmuir.cmu.ac.th/handle/6653943832/38851
_version_ 1681421548403032064