Imperial College London
Alternate

ProfessorSandrineHeutz

Faculty of Engineering, Department of Materials

Head of the Department of Materials
 
 
 
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Contact

 

+44 (0)20 7594 6727s.heutz

 
 
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Location

 

201.BRoyal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Shankar:2020:10.26434/chemrxiv.12333314.v1,
author = {Shankar, R and Lubert-Perquel, D and Mistry, E and Nevjesti, I and Heutz, S and Petit, C},
doi = {10.26434/chemrxiv.12333314.v1},
title = {Water-Stable Boron-Doped Boron Nitride Photocatalyst for Visible Light-Driven H2 Evolution and CO2 Photoreduction},
url = {http://dx.doi.org/10.26434/chemrxiv.12333314.v1},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - <jats:p>Developing robust, multifunctional photocatalysts that can facilitate both hydrogen evolution via photoreforming of water and gas phase CO2 photoreduction is highly desirable with the long-term vision of integrated photocatalytic setups. Here, we present a new addition to the boron nitride (BN) photocatalyst material platform, boron-doped boron oxynitride (B-BNO), capable of fulfilling this goal. Detailed EPR studies revealed hyperfine interactions between free charges located on discrete OB3 sites, exhibiting an out-of-plane symmetry, and the nuclei of neighbouring boron atoms. This material resolves two long-standing bottlenecks associated to BN-based materials concomitantly: instability in water and lack of photo activity under visible light. We show that B-BNO maintains prolonged stability in water for at least three straight days and can facilitate both liquid phase H2 evolution and gas phase CO2 photoreduction, using UV-Vis and deep visible irradiation (λ > 550 nm), without any cocatalysts. The evolution rates, apparent quantum yields, and selectivities observed for both reactions with B-BNO exceed those of its porous BNO counterpart, P25 TiO2 and bulk g-C3N4. This work provides scope to expand the BN photocatalyst platform to a wider range of reactions.</jats:p>
AU  - Shankar,R
AU  - Lubert-Perquel,D
AU  - Mistry,E
AU  - Nevjesti,I
AU  - Heutz,S
AU  - Petit,C
DO  - 10.26434/chemrxiv.12333314.v1
PY  - 2020///
TI  - Water-Stable Boron-Doped Boron Nitride Photocatalyst for Visible Light-Driven H2 Evolution and CO2 Photoreduction
UR  - http://dx.doi.org/10.26434/chemrxiv.12333314.v1
ER  -
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