Imperial College London
Alternate

Professor Jason Riley

Faculty of Engineering, Department of Materials

Vice-Dean (Education) for the Faculty of Engineering
 
 
 
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Contact

 

+44 (0)20 7594 6751jason.riley

 
 
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Location

 

B3.37Bessemer BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Ji:2023:10.1016/j.mtadv.2023.100361,
author = {Ji, C and Xu, J and Jiang, Q and Kerherve, G and Zhou, H and li, X and Tang, S and Sharma, P and Riley, DJ and Xie, F},
doi = {10.1016/j.mtadv.2023.100361},
journal = {Materials Today Advances},
pages = {1--13},
title = {Significantly boosted photoelectrochemical water splitting performance by plasmonic enhanced Hematite@MOF composite photoelectrodes},
url = {http://dx.doi.org/10.1016/j.mtadv.2023.100361},
volume = {18},
year = {2023}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Hematite as a catalyst for photoelectrochemical water splitting offers huge potential, due to its high chemical stability, great abundance, and low cost. However, the low water oxidation kinetics and poor charge transportation have hindered progress towards the manufacture of practical water splitting devices. To tackle these problems, a visible light responsive metal-organic framework (MOF) polyhedral zeolitic imidazolate (ZIF-67), and optimised plasmonic Ag nanorods were incorporated into hematite nanostructures to form a three-component heterojunction photoelectrode. The designed photoanode showed dramatically improved light harvesting in the visible range and enhanced charge transport. A mechanistic investigation allowed the deconvolution of the enhanced performance pathways. First, the Hematite@ZIF-67 core-shell p-n junction enables facile charge carrier transfer between ZIF-67 and hematite. In addition, ZIF-67 also provides active sites for water oxidation and boosts surface oxygen evolution reaction (OER) kinetics. Guided by finite-difference time-domain (FDTD) modelling, Ag nanorods with optimised aspect ratio were incorporated between ZIF-67 and hematite. The Ag nanorods facilitate broadband light absorption and surface charge injection, induced by near-field excitation enhancement and plasmonic resonance energy transfer (PRET) pathways. The design and addition of ZIF-67 and Ag nanorods result in superior performance for a hematite-based photoanode for photoelectrochemical (PEC) water oxidation.
AU  - Ji,C
AU  - Xu,J
AU  - Jiang,Q
AU  - Kerherve,G
AU  - Zhou,H
AU  - li,X
AU  - Tang,S
AU  - Sharma,P
AU  - Riley,DJ
AU  - Xie,F
DO  - 10.1016/j.mtadv.2023.100361
EP  - 13
PY  - 2023///
SN  - 2590-0498
SP  - 1
TI  - Significantly boosted photoelectrochemical water splitting performance by plasmonic enhanced Hematite@MOF composite photoelectrodes
T2  - Materials Today Advances
UR  - http://dx.doi.org/10.1016/j.mtadv.2023.100361
UR  - https://www.sciencedirect.com/science/article/pii/S2590049823000218
UR  - http://hdl.handle.net/10044/1/103512
VL  - 18
ER  -
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