Annealing Induced Oxygen Defects on Green Sonochemically Synthesized ZnO Nanoparticles for Photoelectrochemical Water Splitting

Vinod Kumar; Mukut Gohain; Rich Kant; O. M. Ntwaeaborwa; Parameswar Hari; H. C. Swart; Viresh Dutta

doi:10.1002/slct.201802668

Annealing Induced Oxygen Defects on Green Sonochemically Synthesized ZnO Nanoparticles for Photoelectrochemical Water Splitting

Vinod Kumar, Mukut Gohain, Rich Kant, O. M. Ntwaeaborwa, Parameswar Hari, H. C. Swart, Viresh Dutta

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

Zinc oxide (ZnO) nanoparticles were prepared by a green process using a simple sonochemical method. The prepared nanoparticles were annealed at different annealing temperatures in order to determine the role of the annealing temperature on the structural, morphological and optical properties of the prepared material. The defects related photoluminescence properties of the ZnO nanoparticles are discussed in detail. X-ray photoelectron spectroscopy provided the information regarding the presence of the defects in the material. ZnO emission related to defect emission was observed to increase with annealing temperature upto 600°C and then decreased. These defects played a crucial role in the performance of the photo-electrochemical (PEC) activity. The PEC performance has increased with an increase in the amount of oxygen related defects present in the material due to annealing.

Original language	English
Pages (from-to)	11914-11921
Number of pages	8
Journal	ChemistrySelect
Volume	3
Issue number	42
DOIs	https://doi.org/10.1002/slct.201802668
Publication status	Published - 15 Nov 2018
Externally published	Yes

Keywords

Defects
Green chemistry
PEC water splitting
XPS
ZnO

ASJC Scopus subject areas

General Chemistry

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10.1002/slct.201802668

Cite this

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title = "Annealing Induced Oxygen Defects on Green Sonochemically Synthesized ZnO Nanoparticles for Photoelectrochemical Water Splitting",

abstract = "Zinc oxide (ZnO) nanoparticles were prepared by a green process using a simple sonochemical method. The prepared nanoparticles were annealed at different annealing temperatures in order to determine the role of the annealing temperature on the structural, morphological and optical properties of the prepared material. The defects related photoluminescence properties of the ZnO nanoparticles are discussed in detail. X-ray photoelectron spectroscopy provided the information regarding the presence of the defects in the material. ZnO emission related to defect emission was observed to increase with annealing temperature upto 600°C and then decreased. These defects played a crucial role in the performance of the photo-electrochemical (PEC) activity. The PEC performance has increased with an increase in the amount of oxygen related defects present in the material due to annealing.",

keywords = "Defects, Green chemistry, PEC water splitting, XPS, ZnO",

author = "Vinod Kumar and Mukut Gohain and Rich Kant and Ntwaeaborwa, {O. M.} and Parameswar Hari and Swart, {H. C.} and Viresh Dutta",

note = "Publisher Copyright: {\textcopyright} 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim",

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AU - Kumar, Vinod

AU - Gohain, Mukut

AU - Kant, Rich

AU - Ntwaeaborwa, O. M.

AU - Hari, Parameswar

AU - Swart, H. C.

AU - Dutta, Viresh

PY - 2018/11/15

Y1 - 2018/11/15

N2 - Zinc oxide (ZnO) nanoparticles were prepared by a green process using a simple sonochemical method. The prepared nanoparticles were annealed at different annealing temperatures in order to determine the role of the annealing temperature on the structural, morphological and optical properties of the prepared material. The defects related photoluminescence properties of the ZnO nanoparticles are discussed in detail. X-ray photoelectron spectroscopy provided the information regarding the presence of the defects in the material. ZnO emission related to defect emission was observed to increase with annealing temperature upto 600°C and then decreased. These defects played a crucial role in the performance of the photo-electrochemical (PEC) activity. The PEC performance has increased with an increase in the amount of oxygen related defects present in the material due to annealing.

AB - Zinc oxide (ZnO) nanoparticles were prepared by a green process using a simple sonochemical method. The prepared nanoparticles were annealed at different annealing temperatures in order to determine the role of the annealing temperature on the structural, morphological and optical properties of the prepared material. The defects related photoluminescence properties of the ZnO nanoparticles are discussed in detail. X-ray photoelectron spectroscopy provided the information regarding the presence of the defects in the material. ZnO emission related to defect emission was observed to increase with annealing temperature upto 600°C and then decreased. These defects played a crucial role in the performance of the photo-electrochemical (PEC) activity. The PEC performance has increased with an increase in the amount of oxygen related defects present in the material due to annealing.

KW - Defects

KW - Green chemistry

KW - PEC water splitting

KW - XPS

KW - ZnO

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U2 - 10.1002/slct.201802668

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JF - ChemistrySelect

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ER -

Annealing Induced Oxygen Defects on Green Sonochemically Synthesized ZnO Nanoparticles for Photoelectrochemical Water Splitting

Abstract

Keywords

ASJC Scopus subject areas

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