Ag2S/ZnO Nanorods Composite Photoelectrode Prepared by Hydrothermal Method: Influence of Growth Temperature

Araa Mebdir Holi, Zulkarnain Zainal, Asmaa Kadim Ayal, Sook Keng Chang, Hong Ngee Lim, Zainal Abidin Talib, Chi Chin Yap

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Silver sulfide (Ag2S) attached to ZnO nanorods film has been successfully prepared by a two-step hydrothermal process. The prepared photoelectrodes were characterized by Field Emission Scanning Eletron Microscopy (FESEM), Energy Dispersive Spectroscopy (EDS), X-ray diffractometry (XRD), UV-vis spectrophotometry (UV–vis) and photoelectrochemical measurements (PEC). The results revealed that Ag2S deposited onto the surface of ZnO nanorods was under the influence of growth temperature. The absorption in the visible region and efficient transfer of photoelectron between Ag2S/ZnO/ITO photoelectrode and the redox species in the electrolyte were significantly enhanced under the illumination intensity of 100 mW cm−2. The band gap values of the five different growth temperatures ranging from 50 °C to 90 °C were found to decrease from 2.93 eV to 1.57 eV. Besides, the photoelectrochemical measurements verified that Ag2S/ZnO nanocomposite grown at 60 °C exhibited the highest photocurrent density of 3.97 mA/cm2 at 1.0 V. The findings suggested that Ag2S/ZnO nanocomposite is an efficient alternative for photoelectrode applications.

Original languageEnglish
Pages (from-to)473-479
Number of pages7
JournalOptik
Volume184
DOIs
Publication statusPublished - 1 May 2019

Fingerprint

Growth temperature
Nanorods
nanorods
Nanocomposites
nanocomposites
composite materials
Composite materials
Spectrophotometry
spectrophotometry
Photoelectrons
ITO (semiconductors)
Photocurrents
Field emission
X ray diffraction analysis
Electrolytes
photocurrents
sulfides
Energy dispersive spectroscopy
field emission
Microscopic examination

Keywords

  • AgS
  • Hydrothermal deposition
  • Nanocomposite
  • Photoelectrode
  • ZnO

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

Ag2S/ZnO Nanorods Composite Photoelectrode Prepared by Hydrothermal Method : Influence of Growth Temperature. / Holi, Araa Mebdir; Zainal, Zulkarnain; Ayal, Asmaa Kadim; Chang, Sook Keng; Lim, Hong Ngee; Talib, Zainal Abidin; Yap, Chi Chin.

In: Optik, Vol. 184, 01.05.2019, p. 473-479.

Research output: Contribution to journalArticle

Holi, Araa Mebdir ; Zainal, Zulkarnain ; Ayal, Asmaa Kadim ; Chang, Sook Keng ; Lim, Hong Ngee ; Talib, Zainal Abidin ; Yap, Chi Chin. / Ag2S/ZnO Nanorods Composite Photoelectrode Prepared by Hydrothermal Method : Influence of Growth Temperature. In: Optik. 2019 ; Vol. 184. pp. 473-479.
@article{74a985618e7d463fa6dbbfe09236f92f,
title = "Ag2S/ZnO Nanorods Composite Photoelectrode Prepared by Hydrothermal Method: Influence of Growth Temperature",
abstract = "Silver sulfide (Ag2S) attached to ZnO nanorods film has been successfully prepared by a two-step hydrothermal process. The prepared photoelectrodes were characterized by Field Emission Scanning Eletron Microscopy (FESEM), Energy Dispersive Spectroscopy (EDS), X-ray diffractometry (XRD), UV-vis spectrophotometry (UV–vis) and photoelectrochemical measurements (PEC). The results revealed that Ag2S deposited onto the surface of ZnO nanorods was under the influence of growth temperature. The absorption in the visible region and efficient transfer of photoelectron between Ag2S/ZnO/ITO photoelectrode and the redox species in the electrolyte were significantly enhanced under the illumination intensity of 100 mW cm−2. The band gap values of the five different growth temperatures ranging from 50 °C to 90 °C were found to decrease from 2.93 eV to 1.57 eV. Besides, the photoelectrochemical measurements verified that Ag2S/ZnO nanocomposite grown at 60 °C exhibited the highest photocurrent density of 3.97 mA/cm2 at 1.0 V. The findings suggested that Ag2S/ZnO nanocomposite is an efficient alternative for photoelectrode applications.",
keywords = "AgS, Hydrothermal deposition, Nanocomposite, Photoelectrode, ZnO",
author = "Holi, {Araa Mebdir} and Zulkarnain Zainal and Ayal, {Asmaa Kadim} and Chang, {Sook Keng} and Lim, {Hong Ngee} and Talib, {Zainal Abidin} and Yap, {Chi Chin}",
year = "2019",
month = "5",
day = "1",
doi = "10.1016/j.ijleo.2019.03.010",
language = "English",
volume = "184",
pages = "473--479",
journal = "Optik",
issn = "0030-4026",
publisher = "Urban und Fischer Verlag Jena",

}

TY - JOUR

T1 - Ag2S/ZnO Nanorods Composite Photoelectrode Prepared by Hydrothermal Method

T2 - Influence of Growth Temperature

AU - Holi, Araa Mebdir

AU - Zainal, Zulkarnain

AU - Ayal, Asmaa Kadim

AU - Chang, Sook Keng

AU - Lim, Hong Ngee

AU - Talib, Zainal Abidin

AU - Yap, Chi Chin

PY - 2019/5/1

Y1 - 2019/5/1

N2 - Silver sulfide (Ag2S) attached to ZnO nanorods film has been successfully prepared by a two-step hydrothermal process. The prepared photoelectrodes were characterized by Field Emission Scanning Eletron Microscopy (FESEM), Energy Dispersive Spectroscopy (EDS), X-ray diffractometry (XRD), UV-vis spectrophotometry (UV–vis) and photoelectrochemical measurements (PEC). The results revealed that Ag2S deposited onto the surface of ZnO nanorods was under the influence of growth temperature. The absorption in the visible region and efficient transfer of photoelectron between Ag2S/ZnO/ITO photoelectrode and the redox species in the electrolyte were significantly enhanced under the illumination intensity of 100 mW cm−2. The band gap values of the five different growth temperatures ranging from 50 °C to 90 °C were found to decrease from 2.93 eV to 1.57 eV. Besides, the photoelectrochemical measurements verified that Ag2S/ZnO nanocomposite grown at 60 °C exhibited the highest photocurrent density of 3.97 mA/cm2 at 1.0 V. The findings suggested that Ag2S/ZnO nanocomposite is an efficient alternative for photoelectrode applications.

AB - Silver sulfide (Ag2S) attached to ZnO nanorods film has been successfully prepared by a two-step hydrothermal process. The prepared photoelectrodes were characterized by Field Emission Scanning Eletron Microscopy (FESEM), Energy Dispersive Spectroscopy (EDS), X-ray diffractometry (XRD), UV-vis spectrophotometry (UV–vis) and photoelectrochemical measurements (PEC). The results revealed that Ag2S deposited onto the surface of ZnO nanorods was under the influence of growth temperature. The absorption in the visible region and efficient transfer of photoelectron between Ag2S/ZnO/ITO photoelectrode and the redox species in the electrolyte were significantly enhanced under the illumination intensity of 100 mW cm−2. The band gap values of the five different growth temperatures ranging from 50 °C to 90 °C were found to decrease from 2.93 eV to 1.57 eV. Besides, the photoelectrochemical measurements verified that Ag2S/ZnO nanocomposite grown at 60 °C exhibited the highest photocurrent density of 3.97 mA/cm2 at 1.0 V. The findings suggested that Ag2S/ZnO nanocomposite is an efficient alternative for photoelectrode applications.

KW - AgS

KW - Hydrothermal deposition

KW - Nanocomposite

KW - Photoelectrode

KW - ZnO

UR - http://www.scopus.com/inward/record.url?scp=85065056027&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85065056027&partnerID=8YFLogxK

U2 - 10.1016/j.ijleo.2019.03.010

DO - 10.1016/j.ijleo.2019.03.010

M3 - Article

AN - SCOPUS:85065056027

VL - 184

SP - 473

EP - 479

JO - Optik

JF - Optik

SN - 0030-4026

ER -