Oxygen-assisted stabilization of single-atom Au during photocatalytic hydrogen evolution

Pre-treatment of graphitic carbon nitride (GCN) with H 2 O 2 introduces active C-OH groups that can react with HAuCl 4 to immobilize single atom Au( i ) in the GCN matrix through creating robust Au( i )-O coordination bonds. This strong bonding can effectively restrict the diffusion of intermediate...

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Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2019, Vol.7 (42), p.24217-24221
Main Authors: Zeng, Lei, Dai, Chunhui, Liu, Bin, Xue, Can
Format: Article
Language:English
Subjects:
Bonding strength
Carbon nitride
Hydrogen
Hydrogen evolution
Hydrogen peroxide
Hydrogen production
Photocatalysis
Pretreatment
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Summary:Pre-treatment of graphitic carbon nitride (GCN) with H 2 O 2 introduces active C-OH groups that can react with HAuCl 4 to immobilize single atom Au( i ) in the GCN matrix through creating robust Au( i )-O coordination bonds. This strong bonding can effectively restrict the diffusion of intermediate Au(0) towards the formation of Au particles during the photocatalytic hydrogen evolution process. As such, the single atom Au( i ) incorporated GCN maintained superior activities with excellent stabilities for photocatalytic hydrogen generation. Pre-treatment of graphitic carbon nitride (GCN) with H 2 O 2 introduces active C-OH groups that can react with HAuCl 4 to immobilize single atom Au( i ) in the GCN matrix through creating robust Au( i )-O coordination bonds.
ISSN:2050-7488
2050-7496
DOI:10.1039/c9ta10290f