Title

A hydrogen-initiated chemical epitaxial growth strategy for in-plane heterostructured photocatalyst

Document Type

Journal Article

Publication Title

ACS Nano

Volume

14

Issue

12

First Page

17505

Last Page

17514

Publisher

American Chemical Society Publications

School

School of Engineering

RAS ID

32845

Funders

Australian Research Council Edith Cowan University University of Western Australia Curtin University Australian Research Council LIEF grant

Grant Number

ARC Number : DP170104264, DP190103548, LE120100026

Grant Link

http://purl.org/au-research/grants/arc/DP170104264 http://purl.org/au-research/grants/arc/DP190103548

Comments

Zhang, J., Li, Y., Zhao, X., Zhang, H., Wang, L., Chen, H., ... Sun, H. (2020). A hydrogen-initiated chemical epitaxial growth strategy for in-plane heterostructured photocatalyst. ACS Nano, 14(12), 17505-17514. https://doi.org/10.1021/acsnano.0c07934

Abstract

© 2020 American Chemical Society. Integrating carbon nitride with graphene into a lateral heterojunction would avoid energy loss within the interlaminar space region on conventional composites. To date, its synthesis process is limited to the bottom-up method which lacks the targeting and homogeneity. Herein, we proposed a hydrogen-initiated chemical epitaxial growth strategy at a relatively low temperature for the fabrication of graphene/carbon nitride in-plane heterostructure. Theoretical and experimental analysis proved that methane via in situ generation from the hydrogenated decomposition of carbon nitride triggered the graphene growth along the active sites at the edges of confined spaces. With the enhanced electrical field from the deposited graphene (0.5%), the performances on selective photo-oxidation and photocatalytic water splitting were promoted by 5.5 and 3.7 times, respectively. Meanwhile, a 7720 μmol/h/g(graphene) hydrogen evolution rate was acquired without any cocatalysts. This study provides an top-down strategy to synthesize in-plane catalyst for the utilization of solar energy.

DOI

10.1021/acsnano.0c07934

Research Themes

Natural and Built Environments

Priority Areas

Sustainability of energy, water, materials and resources

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