Imperial College London
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DrReshmaRao

Faculty of Natural Sciences, The Grantham Institute for Climate Change

Lecturer (Royal Academy of Engineering Research Fellow)
 
 
 
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Contact

 

reshma.rao

 
 
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Location

 

G22Molecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Corby:2021:10.1038/s41578-021-00343-7,
author = {Corby, S and Rao, R and Steier, L and Durrant, J},
doi = {10.1038/s41578-021-00343-7},
journal = {Nature Reviews Materials},
pages = {1136--1155},
title = {The kinetics of metal oxide photoanodesfrom charge generation to catalysis},
url = {http://dx.doi.org/10.1038/s41578-021-00343-7},
volume = {6},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Generating  charge  carriers  with  lifetimes  long  enough  to  drive  catalysis  is a  critical  aspect for  both photoelectrochemical  and  photocatalytic  systems  and  a  key  determinant  of  their  efficiency. This review  addresses  the  charge  carrier  dynamics  underlying  the  performance  of  metal  oxides as photoanodes  and  their  ability  to  drive  photoelectrochemical water  oxidation,  alongside wider comparison  with  metal  oxide  function  in  photocatalytic and  electrocatalytic  systems.  We  start  by highlighting  the  disparity  between  the ps–ns lifetimes  of electron  and  holes  photoexcited  in  bulk metal  oxides  versus  the  ms –s  timescale  of  water  oxidation  catalysis.  We  go  onto  review  recent literature  of  the dominant kinetic  processes  determining  photoanode  performance,  namely charge generation,   polaron   formation   and   charge   trapping,   bulk   and   surface   recombination,   charge separation  and extraction, and  finally  the  kinetics  of water oxidation  catalysis. With  each topic, we review  current  understanding  and note areas  of  remaining  uncertainty  or  controversy.  We discuss the  potential  for  material  selection  and examine approaches  such  as  doping,  nanostructuring, junction  formation and/or  co-catalyst  deposition  to  enhance  performance. Critically,  we  examine how  such  performance  enhancements can  be  understood  from  analyses  of  carrier  dynamics and propose design guidelines for further material or device optimisation.
AU  - Corby,S
AU  - Rao,R
AU  - Steier,L
AU  - Durrant,J
DO  - 10.1038/s41578-021-00343-7
EP  - 1155
PY  - 2021///
SN  - 2058-8437
SP  - 1136
TI  - The kinetics of metal oxide photoanodesfrom charge generation to catalysis
T2  - Nature Reviews Materials
UR  - http://dx.doi.org/10.1038/s41578-021-00343-7
UR  - http://hdl.handle.net/10044/1/90327
VL  - 6
ER  -
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