Imperial College London
Portrait Picture

Professor James Durrant, CBE, FRS

Faculty of Natural Sciences, Department of Chemistry

Professor of Photochemistry
 
 
 
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Contact

 

+44 (0)20 7594 5321j.durrant Website

 
 
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Assistant

 

Miss Lisa Benbow +44 (0)20 7594 5883

 
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Location

 

G22CMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Wang:2021:10.1002/ange.202105570,
author = {Wang, Y and Godin, R and Durrant, JR and Tang, J},
doi = {10.1002/ange.202105570},
journal = {Angewandte Chemie},
pages = {20979--20984},
title = {Efficient Hole Trapping in Carbon Dot/OxygenModified Carbon Nitride Heterojunction Photocatalysts for Enhanced Methanol Production from CO<sub>2</sub> under Neutral Conditions},
url = {http://dx.doi.org/10.1002/ange.202105570},
volume = {133},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - <jats:title>Abstract</jats:title><jats:p>Artificial photosynthesis of alcohols from CO<jats:sub>2</jats:sub> is still unsatisfactory owing to the rapid charge relaxation compared to the sluggish photoreactions and the oxidation of alcohol products. Here, we demonstrate that CO<jats:sub>2</jats:sub> is reduced to methanol with 100 % selectivity using water as the only electron donor on a carbon nitridelike polymer (FAT) decorated with carbon dots. The quantum efficiency of 5.9 % (<jats:italic>λ</jats:italic>=420nm) is 300 % higher than the previously reported carbon nitride junction. Using transient absorption spectroscopy, we observed that holes in FAT could be extracted by the carbon dots with nearly 75 % efficiency before they become unreactive by trapping. Extraction of holes resulted in a greater density of photoelectrons, indicative of reduced recombination of shorterlived reactive electrons. This work offers a strategy to promote photocatalysis by increasing the amount of reactive photogenerated charges via structure engineering and extraction before energy losses by deep trapping.</jats:p>
AU  - Wang,Y
AU  - Godin,R
AU  - Durrant,JR
AU  - Tang,J
DO  - 10.1002/ange.202105570
EP  - 20984
PY  - 2021///
SN  - 0044-8249
SP  - 20979
TI  - Efficient Hole Trapping in Carbon Dot/OxygenModified Carbon Nitride Heterojunction Photocatalysts for Enhanced Methanol Production from CO<sub>2</sub> under Neutral Conditions
T2  - Angewandte Chemie
UR  - http://dx.doi.org/10.1002/ange.202105570
VL  - 133
ER  -
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