Imperial College London
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DrAndreasKafizas

Faculty of Natural Sciences, Department of Chemistry

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 6752a.kafizas Website

 
 
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Location

 

301GMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Wang:2023:10.1016/j.apcatb.2023.122657,
author = {Wang, M and Kafizas, A and Sathasivam, S and Blunt, MO and Moss, B and Gonzalez-Carrero, S and Carmalt, CJ},
doi = {10.1016/j.apcatb.2023.122657},
journal = {Applied Catalysis B: Environmental},
title = {ZnO/BiOI heterojunction photoanodes with enhanced photoelectrochemical water oxidation activity},
url = {http://dx.doi.org/10.1016/j.apcatb.2023.122657},
volume = {331},
year = {2023}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - ZnO/BiOI heterojunction photoanode thin films were prepared by aerosol-assisted chemical vapour deposition, and the impact of growth temperature and film thickness on the water oxidation functionality was systematically investigated. A top ZnO layer with a thickness of 120 nm (deposited at 350 °C) and a 390 nm thick BiOI layer (deposited at 300 °C) were found to achieve the best photoelectrochemical performance of the heterojunction. The ZnO/BiOI heterojunction exhibited a significant increase in photoelectrochemical activity, with a photocurrent of 0.27 mA·cm−2 observed at 1.1 VRHE (350 nm, 2.58 mW·cm−2), which is ~ 2.2 times higher than that of single-layer ZnO and far higher than that of BiOI. Photoluminescence spectroscopy and transient absorption spectroscopy measurements showed that there was effective charge transfer across the heterojunction which spatially separated charge carriers and increased their lifetime and ability to drive photoelectrochemical water oxidation.
AU  - Wang,M
AU  - Kafizas,A
AU  - Sathasivam,S
AU  - Blunt,MO
AU  - Moss,B
AU  - Gonzalez-Carrero,S
AU  - Carmalt,CJ
DO  - 10.1016/j.apcatb.2023.122657
PY  - 2023///
SN  - 0926-3373
TI  - ZnO/BiOI heterojunction photoanodes with enhanced photoelectrochemical water oxidation activity
T2  - Applied Catalysis B: Environmental
UR  - http://dx.doi.org/10.1016/j.apcatb.2023.122657
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:001053669900001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
UR  - https://doi.org/10.1016/j.apcatb.2023.122657
UR  - http://hdl.handle.net/10044/1/107837
VL  - 331
ER  -
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