Seed/catalyst-free vertical growth of high-density electrodeposited zinc oxide nanostructures on a single-layer graphene

We report the seed/catalyst-free vertical growth of high-density electrodeposited ZnO nanostructures on a single-layer graphene. The absence of hexamethylenetetramine (HMTA) and heat has resulted in the formation of nanoflake-like ZnO structure. The results show that HMTA and heat are needed to prom...

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Main Authors:	Aziz, Nur Suhaili Abd, Mahmood, Mohamad Rusop, Yasui, Kanji, Hashim, Abdul Manaf
Format:	Online
Language:	English
Published:	Springer 2014
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3937434/

id	pubmed-3937434
recordtype	oai_dc
spelling	pubmed-39374342014-03-10 Seed/catalyst-free vertical growth of high-density electrodeposited zinc oxide nanostructures on a single-layer graphene Aziz, Nur Suhaili Abd Mahmood, Mohamad Rusop Yasui, Kanji Hashim, Abdul Manaf Nano Express We report the seed/catalyst-free vertical growth of high-density electrodeposited ZnO nanostructures on a single-layer graphene. The absence of hexamethylenetetramine (HMTA) and heat has resulted in the formation of nanoflake-like ZnO structure. The results show that HMTA and heat are needed to promote the formation of hexagonal ZnO nanostructures. The applied current density plays important role in inducing the growth of ZnO on graphene as well as in controlling the shape, size, and density of ZnO nanostructures. High density of vertically aligned ZnO nanorods comparable to other methods was obtained. The quality of the ZnO nanostructures also depended strongly on the applied current density. The growth mechanism was proposed. According to the growth timing chart, the growth seems to involve two stages which are the formation of ZnO nucleation and the enhancement of the vertical growth of nanorods. ZnO/graphene hybrid structure provides several potential applications in electronics and optoelectronics such as photovoltaic devices, sensing devices, optical devices, and photodetectors. Springer 2014-02-26 /pmc/articles/PMC3937434/ /pubmed/24568668 http://dx.doi.org/10.1186/1556-276X-9-95 Text en Copyright © 2014 Aziz et al.; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Aziz, Nur Suhaili Abd Mahmood, Mohamad Rusop Yasui, Kanji Hashim, Abdul Manaf
spellingShingle	Aziz, Nur Suhaili Abd Mahmood, Mohamad Rusop Yasui, Kanji Hashim, Abdul Manaf Seed/catalyst-free vertical growth of high-density electrodeposited zinc oxide nanostructures on a single-layer graphene
author_facet	Aziz, Nur Suhaili Abd Mahmood, Mohamad Rusop Yasui, Kanji Hashim, Abdul Manaf
author_sort	Aziz, Nur Suhaili Abd
title	Seed/catalyst-free vertical growth of high-density electrodeposited zinc oxide nanostructures on a single-layer graphene
title_short	Seed/catalyst-free vertical growth of high-density electrodeposited zinc oxide nanostructures on a single-layer graphene
title_full	Seed/catalyst-free vertical growth of high-density electrodeposited zinc oxide nanostructures on a single-layer graphene
title_fullStr	Seed/catalyst-free vertical growth of high-density electrodeposited zinc oxide nanostructures on a single-layer graphene
title_full_unstemmed	Seed/catalyst-free vertical growth of high-density electrodeposited zinc oxide nanostructures on a single-layer graphene
title_sort	seed/catalyst-free vertical growth of high-density electrodeposited zinc oxide nanostructures on a single-layer graphene
description	We report the seed/catalyst-free vertical growth of high-density electrodeposited ZnO nanostructures on a single-layer graphene. The absence of hexamethylenetetramine (HMTA) and heat has resulted in the formation of nanoflake-like ZnO structure. The results show that HMTA and heat are needed to promote the formation of hexagonal ZnO nanostructures. The applied current density plays important role in inducing the growth of ZnO on graphene as well as in controlling the shape, size, and density of ZnO nanostructures. High density of vertically aligned ZnO nanorods comparable to other methods was obtained. The quality of the ZnO nanostructures also depended strongly on the applied current density. The growth mechanism was proposed. According to the growth timing chart, the growth seems to involve two stages which are the formation of ZnO nucleation and the enhancement of the vertical growth of nanorods. ZnO/graphene hybrid structure provides several potential applications in electronics and optoelectronics such as photovoltaic devices, sensing devices, optical devices, and photodetectors.
publisher	Springer
publishDate	2014
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3937434/
_version_	1612062846534811648

Seed/catalyst-free vertical growth of high-density electrodeposited zinc oxide nanostructures on a single-layer graphene

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