Ambient Aqueous Growth of Cu2Te Nanostructures with Excellent Electrocatalytic Activity toward Sulfide Redox Shuttles.

Han, C; Bai, Y; Sun, Q; Zhang, S; Li, Z; Wang, L; Dou, S

Ambient Aqueous Growth of Cu2Te Nanostructures with Excellent Electrocatalytic Activity toward Sulfide Redox Shuttles.

Han, C

Bai, Y Sun, Q Zhang, S Li, Z Wang, L Dou, S

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Publisher:: WILEY
Publication Type:: Journal Article
Citation:: Adv Sci (Weinh), 2016, 3, (5), pp. 1500350
Issue Date:: 2016-05

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Field	Value	Language
dc.contributor.author	Han, C https://orcid.org/0000-0002-1132-2051
dc.contributor.author	Bai, Y
dc.contributor.author	Sun, Q
dc.contributor.author	Zhang, S
dc.contributor.author	Li, Z
dc.contributor.author	Wang, L
dc.contributor.author	Dou, S
dc.date.accessioned	2022-10-24T05:09:25Z
dc.date.available	2022-10-24T05:09:25Z
dc.date.issued	2016-05
dc.identifier.citation	Adv Sci (Weinh), 2016, 3, (5), pp. 1500350
dc.identifier.issn	2198-3844
dc.identifier.issn	2198-3844
dc.identifier.uri	http://hdl.handle.net/10453/162627
dc.description.abstract	A new aqueous and scalable strategy to synthesize surfactant-free Cu2Te nanotubes and nanosheets at room temperature has been developed. In aqueous solution, Cu2E (E = O, S, Se) nanoparticles can be easily transformed into Cu2Te nanosheets and nanotubes via a simple anion exchange reaction under ambient conditions. The formation of Cu2Te nanosheets is ascribed to a novel exchange-peeling growth mechanism instead of simple Kirkendall effect; and the resultant nanosheets can be further rolled into nanotubes with assistance of stirring. The morphologies of Cu2Te nanosheets and nanotubes can be easily controlled by changing the synthesis parameters, such as the concentration of precursors, the size of nanoparticle precursor, and the amount of NaBH4, as well as the stirring speed. Thus-formed Cu2Te nanostructures exhibit excellent catalytic activity toward sulfide redox shuttles and are exploited as counter electrodes catalysts for quantum dot sensitized solar cells. The performance of Cu2Te nanostructures strongly depends on their morphology, and the solar cells made with counter electrodes from Cu2Te nanosheets show the maximum power conversion efficiency of 5.35%.
dc.format	Electronic-eCollection
dc.language	eng
dc.publisher	WILEY
dc.relation.ispartof	Adv Sci (Weinh)
dc.relation.isbasedon	10.1002/advs.201500350
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Ambient Aqueous Growth of Cu2Te Nanostructures with Excellent Electrocatalytic Activity toward Sulfide Redox Shuttles.
dc.type	Journal Article
utslib.citation.volume	3
utslib.location.activity	Germany
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	open_access	*
dc.date.updated	2022-10-24T05:08:48Z
pubs.issue	5
pubs.publication-status	Published online
pubs.volume	3
utslib.citation.issue	5

Abstract:

A new aqueous and scalable strategy to synthesize surfactant-free Cu2Te nanotubes and nanosheets at room temperature has been developed. In aqueous solution, Cu2E (E = O, S, Se) nanoparticles can be easily transformed into Cu2Te nanosheets and nanotubes via a simple anion exchange reaction under ambient conditions. The formation of Cu2Te nanosheets is ascribed to a novel exchange-peeling growth mechanism instead of simple Kirkendall effect; and the resultant nanosheets can be further rolled into nanotubes with assistance of stirring. The morphologies of Cu2Te nanosheets and nanotubes can be easily controlled by changing the synthesis parameters, such as the concentration of precursors, the size of nanoparticle precursor, and the amount of NaBH4, as well as the stirring speed. Thus-formed Cu2Te nanostructures exhibit excellent catalytic activity toward sulfide redox shuttles and are exploited as counter electrodes catalysts for quantum dot sensitized solar cells. The performance of Cu2Te nanostructures strongly depends on their morphology, and the solar cells made with counter electrodes from Cu2Te nanosheets show the maximum power conversion efficiency of 5.35%.

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http://hdl.handle.net/10453/162627