Kesan strategi pengkalsinan terhadap peningkatan fotoaktiviti nanowayar kuprous oksida yang disediakan menggunakan cara mudah untuk pembelahan air suria

Translated title of the contribution: Effect of annealing strategy on improved photoactivity of cuprous oxide nanowire prepared using facile fabrication strategy for solar water splitting

Research output: Contribution to journalArticle

Abstract

Cu2O photocathode such as nanowire (NW) have shown to improve photoactivity than that nanoparticle thin film counterpart. This enhancement is attributed to enhanced photocatalytic reaction due to increase in surface active area and effective radial charge diffusion. However, the photoelectrochemical performance of reported work were rather low which need an improvement prior protection. In this study, Cu2O nanowire photocathode was fabricated using sequential wet chemical oxidation method and annealing under inert condition. Focusing on annealing step, the transformation of precursor Cu(OH)2 nanowire to Cu2O nanowire undergone multistep annealing with a different ramping rate under inert condition. The highest photocurrent was then compared with photocurrent generated from Cu2O NW prepared with direct annealing strategy. With multistep annealing, the best photoelectrochemical performance was obtained from Cu2O NW prepared at the highest ramping rate which is 1.2 folds better than that obtained with single step annealing. The photocurrent enhancement obtained in this study was attributed to favourable morphology improving light trapping. Overall, the ampleness of material source, non-toxic, simple fabrication and excellent photocatalytic performance are the pre-requisite to realize solar hydrogen production.

Original languageMalay
Pages (from-to)914-920
Number of pages7
JournalMalaysian Journal of Analytical Sciences
Volume21
Issue number4
DOIs
Publication statusPublished - 1 Aug 2017

Fingerprint

Nanowires
Annealing
Fabrication
Water
Photocurrents
Photocathodes
Hydrogen production
cuprous oxide
Nanoparticles
Thin films
Oxidation

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

@article{38fe7f7d4fe546cb9409f0b1376bc673,
title = "Kesan strategi pengkalsinan terhadap peningkatan fotoaktiviti nanowayar kuprous oksida yang disediakan menggunakan cara mudah untuk pembelahan air suria",
abstract = "Cu2O photocathode such as nanowire (NW) have shown to improve photoactivity than that nanoparticle thin film counterpart. This enhancement is attributed to enhanced photocatalytic reaction due to increase in surface active area and effective radial charge diffusion. However, the photoelectrochemical performance of reported work were rather low which need an improvement prior protection. In this study, Cu2O nanowire photocathode was fabricated using sequential wet chemical oxidation method and annealing under inert condition. Focusing on annealing step, the transformation of precursor Cu(OH)2 nanowire to Cu2O nanowire undergone multistep annealing with a different ramping rate under inert condition. The highest photocurrent was then compared with photocurrent generated from Cu2O NW prepared with direct annealing strategy. With multistep annealing, the best photoelectrochemical performance was obtained from Cu2O NW prepared at the highest ramping rate which is 1.2 folds better than that obtained with single step annealing. The photocurrent enhancement obtained in this study was attributed to favourable morphology improving light trapping. Overall, the ampleness of material source, non-toxic, simple fabrication and excellent photocatalytic performance are the pre-requisite to realize solar hydrogen production.",
keywords = "Cuprous oxide nanowire, Hydrogen production, Photocurrent, Water-splitting",
author = "Salehmin, {Mohd Nur Ikhmal} and {Effery Minggu}, Lorna and Arifin Khuzaimah and Mohammad Kassim",
year = "2017",
month = "8",
day = "1",
doi = "10.17576/mjas-2017-2104-18",
language = "Malay",
volume = "21",
pages = "914--920",
journal = "Malaysian Journal of Analytical Sciences",
issn = "1394-2506",
publisher = "Faculty of Science and Technology, Universiti Kebangsaan Malaysia",
number = "4",

}

TY - JOUR

T1 - Kesan strategi pengkalsinan terhadap peningkatan fotoaktiviti nanowayar kuprous oksida yang disediakan menggunakan cara mudah untuk pembelahan air suria

AU - Salehmin, Mohd Nur Ikhmal

AU - Effery Minggu, Lorna

AU - Khuzaimah, Arifin

AU - Kassim, Mohammad

PY - 2017/8/1

Y1 - 2017/8/1

N2 - Cu2O photocathode such as nanowire (NW) have shown to improve photoactivity than that nanoparticle thin film counterpart. This enhancement is attributed to enhanced photocatalytic reaction due to increase in surface active area and effective radial charge diffusion. However, the photoelectrochemical performance of reported work were rather low which need an improvement prior protection. In this study, Cu2O nanowire photocathode was fabricated using sequential wet chemical oxidation method and annealing under inert condition. Focusing on annealing step, the transformation of precursor Cu(OH)2 nanowire to Cu2O nanowire undergone multistep annealing with a different ramping rate under inert condition. The highest photocurrent was then compared with photocurrent generated from Cu2O NW prepared with direct annealing strategy. With multistep annealing, the best photoelectrochemical performance was obtained from Cu2O NW prepared at the highest ramping rate which is 1.2 folds better than that obtained with single step annealing. The photocurrent enhancement obtained in this study was attributed to favourable morphology improving light trapping. Overall, the ampleness of material source, non-toxic, simple fabrication and excellent photocatalytic performance are the pre-requisite to realize solar hydrogen production.

AB - Cu2O photocathode such as nanowire (NW) have shown to improve photoactivity than that nanoparticle thin film counterpart. This enhancement is attributed to enhanced photocatalytic reaction due to increase in surface active area and effective radial charge diffusion. However, the photoelectrochemical performance of reported work were rather low which need an improvement prior protection. In this study, Cu2O nanowire photocathode was fabricated using sequential wet chemical oxidation method and annealing under inert condition. Focusing on annealing step, the transformation of precursor Cu(OH)2 nanowire to Cu2O nanowire undergone multistep annealing with a different ramping rate under inert condition. The highest photocurrent was then compared with photocurrent generated from Cu2O NW prepared with direct annealing strategy. With multistep annealing, the best photoelectrochemical performance was obtained from Cu2O NW prepared at the highest ramping rate which is 1.2 folds better than that obtained with single step annealing. The photocurrent enhancement obtained in this study was attributed to favourable morphology improving light trapping. Overall, the ampleness of material source, non-toxic, simple fabrication and excellent photocatalytic performance are the pre-requisite to realize solar hydrogen production.

KW - Cuprous oxide nanowire

KW - Hydrogen production

KW - Photocurrent

KW - Water-splitting

UR - http://www.scopus.com/inward/record.url?scp=85028566091&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85028566091&partnerID=8YFLogxK

U2 - 10.17576/mjas-2017-2104-18

DO - 10.17576/mjas-2017-2104-18

M3 - Article

VL - 21

SP - 914

EP - 920

JO - Malaysian Journal of Analytical Sciences

JF - Malaysian Journal of Analytical Sciences

SN - 1394-2506

IS - 4

ER -