Band Alignment Tunning via the Facets of CdS Nanocrystals with g-C<inf>3</inf>N<inf>4</inf> for Unveiling Their Enhanced Photocatalytical Property

Zhang, Y; Ran, X; Fu, H; Gong, Y; Li, S; Gu, F; Wang, S; An, X; Su, D; Yang, X

Band Alignment Tunning via the Facets of CdS Nanocrystals with g-C<inf>3</inf>N<inf>4</inf> for Unveiling Their Enhanced Photocatalytical Property

Zhang, Y Ran, X Fu, H Gong, Y Li, S Gu, F Wang, S An, X Su, D

Yang, X

Permalink

Publisher:: WILEY-V C H VERLAG GMBH
Publication Type:: Journal Article
Citation:: Advanced Functional Materials, 2024, 34, (44)
Issue Date:: 2024-10-29

Closed Access

	Filename	Description	Size
	Adv Funct Materials - 2024 - Zhang - Band Alignment Tunning via the Facets of CdS Nanocrystals with g‐C3N4 for Unveiling.pdf	Accepted version	4.04 MB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Zhang, Y
dc.contributor.author	Ran, X
dc.contributor.author	Fu, H
dc.contributor.author	Gong, Y
dc.contributor.author	Li, S
dc.contributor.author	Gu, F
dc.contributor.author	Wang, S
dc.contributor.author	An, X
dc.contributor.author	Su, D https://orcid.org/0000-0002-3972-8205
dc.contributor.author	Yang, X
dc.date.accessioned	2025-01-30T06:06:49Z
dc.date.available	2025-01-30T06:06:49Z
dc.date.issued	2024-10-29
dc.identifier.citation	Advanced Functional Materials, 2024, 34, (44)
dc.identifier.issn	1616-301X
dc.identifier.issn	1616-3028
dc.identifier.uri	http://hdl.handle.net/10453/184666
dc.description.abstract	The heterojunction is a great approach to profit the photogenerated electrons and holes separation and then enhance the photoelectric current for the photochemical reactions, such as the hydrogen evolution reaction. The intrinsic of the enhanced electrons and hole separation is ascribed to the appropriate band alignment between the two contact materials and plenty of research has reported the different band alignments formed by the different contacted bulk nanomaterials. Few studies focus on the precious crystal structure-related band alignment. Here, the polyheptazine structured g-C3N4 together with the wurtzite CdS is investigated, and different band alignments are formed through the different exposed crystal planes of CdS. It is found that along with the annealing temperature, the CdS will dominantly expose with the (110) facets and then form the S-scheme heterojunction with the g-C3N4. The formed built-in electric field between the valence band of CdS and the conductive band of g-C3N4 accelerates the recombination between the photogenerated electrons from CdS and holes from g-C3N4. Meanwhile, it promotes the separation of the photogenerated electrons with holes from g-C3N4, resulting in the superior photocatalytic HER performance. The study supplies a new venue for preciously tunneling the band alignments between the heterogeneous catalysts for optimizing the photoelectric properties.
dc.language	English
dc.publisher	WILEY-V C H VERLAG GMBH
dc.relation	http://purl.org/au-research/grants/arc/DP230101040
dc.relation	http://purl.org/au-research/grants/arc/DP240101548
dc.relation.ispartof	Advanced Functional Materials
dc.relation.isbasedon	10.1002/adfm.202404585
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	02 Physical Sciences, 03 Chemical Sciences, 09 Engineering
dc.subject.classification	Materials
dc.subject.classification	34 Chemical sciences
dc.subject.classification	40 Engineering
dc.subject.classification	51 Physical sciences
dc.title	Band Alignment Tunning via the Facets of CdS Nanocrystals with g-C<inf>3</inf>N<inf>4</inf> for Unveiling Their Enhanced Photocatalytical Property
dc.type	Journal Article
utslib.citation.volume	34
utslib.for	02 Physical Sciences
utslib.for	03 Chemical Sciences
utslib.for	09 Engineering
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Science
pubs.organisational-group	University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	closed_access	*
dc.date.updated	2025-01-30T06:06:48Z
pubs.issue	44
pubs.publication-status	Published
pubs.volume	34
utslib.citation.issue	44

Abstract:

The heterojunction is a great approach to profit the photogenerated electrons and holes separation and then enhance the photoelectric current for the photochemical reactions, such as the hydrogen evolution reaction. The intrinsic of the enhanced electrons and hole separation is ascribed to the appropriate band alignment between the two contact materials and plenty of research has reported the different band alignments formed by the different contacted bulk nanomaterials. Few studies focus on the precious crystal structure-related band alignment. Here, the polyheptazine structured g-C3N4 together with the wurtzite CdS is investigated, and different band alignments are formed through the different exposed crystal planes of CdS. It is found that along with the annealing temperature, the CdS will dominantly expose with the (110) facets and then form the S-scheme heterojunction with the g-C3N4. The formed built-in electric field between the valence band of CdS and the conductive band of g-C3N4 accelerates the recombination between the photogenerated electrons from CdS and holes from g-C3N4. Meanwhile, it promotes the separation of the photogenerated electrons with holes from g-C3N4, resulting in the superior photocatalytic HER performance. The study supplies a new venue for preciously tunneling the band alignments between the heterogeneous catalysts for optimizing the photoelectric properties.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/184666