Evaluation of carrier lifetime and photocatalytic properties of annealed ZnS/TiO2 nanocomposite

Tomoya Ohara; Akihiro Furube; Pankaj Koinkar; Deepak Patil

doi:10.1142/S0217984919400177

Evaluation of carrier lifetime and photocatalytic properties of annealed ZnS/TiO2 nanocomposite

Tomoya Ohara
, Akihiro Furube
, Pankaj Koinkar
, Deepak Patil

Department of Physics

Tokushima University

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

Abstract

In this study, zinc sulfide (ZnS)/titanium oxide(TiO2) nanoparticles were prepared by a two-step facile hydrothermal method and then annealing at 400C for 30 min. Also, the transient absorption measurement and photocatalytic activity of ZnS/TiO2 before and after annealing were investigated. The characterization technique such as the scanning electron microscopy (SEM) and X-ray diffraction (XRD) and UV-Visible spectroscopy have been employed to study the surface morphology and structural details. The SEM image shows the change in the surface morphology due to annealing. The change of the crystal structure of ZnS-TiO2 is revealed by XRD spectra. The femtosecond transient absorption measurement showed moderate decay over several hundred picoseconds for annealed ZnS/TiO2. Moreover, improved photocatalytic activity of annealed ZnS/TiO2 nanoparticles in visible light has been observed.

Original language	English
Article number	1940017
Journal	Modern Physics Letters B
Volume	33
Issue number	14-15
DOIs	https://doi.org/10.1142/S0217984919400177
State	Published - 30 May 2019

Keywords

Photocatalysts
TiO2
transient absorption measurement
X-ray diffraction
ZnS

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10.1142/S0217984919400177

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title = "Evaluation of carrier lifetime and photocatalytic properties of annealed ZnS/TiO2 nanocomposite",

abstract = "In this study, zinc sulfide (ZnS)/titanium oxide(TiO2) nanoparticles were prepared by a two-step facile hydrothermal method and then annealing at 400C for 30 min. Also, the transient absorption measurement and photocatalytic activity of ZnS/TiO2 before and after annealing were investigated. The characterization technique such as the scanning electron microscopy (SEM) and X-ray diffraction (XRD) and UV-Visible spectroscopy have been employed to study the surface morphology and structural details. The SEM image shows the change in the surface morphology due to annealing. The change of the crystal structure of ZnS-TiO2 is revealed by XRD spectra. The femtosecond transient absorption measurement showed moderate decay over several hundred picoseconds for annealed ZnS/TiO2. Moreover, improved photocatalytic activity of annealed ZnS/TiO2 nanoparticles in visible light has been observed.",

keywords = "Photocatalysts, TiO2, transient absorption measurement, X-ray diffraction, ZnS",

author = "Tomoya Ohara and Akihiro Furube and Pankaj Koinkar and Deepak Patil",

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T1 - Evaluation of carrier lifetime and photocatalytic properties of annealed ZnS/TiO2 nanocomposite

AU - Ohara, Tomoya

AU - Furube, Akihiro

AU - Koinkar, Pankaj

AU - Patil, Deepak

PY - 2019/5/30

Y1 - 2019/5/30

N2 - In this study, zinc sulfide (ZnS)/titanium oxide(TiO2) nanoparticles were prepared by a two-step facile hydrothermal method and then annealing at 400C for 30 min. Also, the transient absorption measurement and photocatalytic activity of ZnS/TiO2 before and after annealing were investigated. The characterization technique such as the scanning electron microscopy (SEM) and X-ray diffraction (XRD) and UV-Visible spectroscopy have been employed to study the surface morphology and structural details. The SEM image shows the change in the surface morphology due to annealing. The change of the crystal structure of ZnS-TiO2 is revealed by XRD spectra. The femtosecond transient absorption measurement showed moderate decay over several hundred picoseconds for annealed ZnS/TiO2. Moreover, improved photocatalytic activity of annealed ZnS/TiO2 nanoparticles in visible light has been observed.

AB - In this study, zinc sulfide (ZnS)/titanium oxide(TiO2) nanoparticles were prepared by a two-step facile hydrothermal method and then annealing at 400C for 30 min. Also, the transient absorption measurement and photocatalytic activity of ZnS/TiO2 before and after annealing were investigated. The characterization technique such as the scanning electron microscopy (SEM) and X-ray diffraction (XRD) and UV-Visible spectroscopy have been employed to study the surface morphology and structural details. The SEM image shows the change in the surface morphology due to annealing. The change of the crystal structure of ZnS-TiO2 is revealed by XRD spectra. The femtosecond transient absorption measurement showed moderate decay over several hundred picoseconds for annealed ZnS/TiO2. Moreover, improved photocatalytic activity of annealed ZnS/TiO2 nanoparticles in visible light has been observed.

KW - Photocatalysts

KW - TiO2

KW - transient absorption measurement

KW - X-ray diffraction

KW - ZnS

UR - https://www.scopus.com/pages/publications/85064200117

U2 - 10.1142/S0217984919400177

DO - 10.1142/S0217984919400177

M3 - Article

AN - SCOPUS:85064200117

SN - 0217-9849

VL - 33

JO - Modern Physics Letters B

JF - Modern Physics Letters B

IS - 14-15

M1 - 1940017

ER -

Evaluation of carrier lifetime and photocatalytic properties of annealed ZnS/TiO2 nanocomposite

Abstract

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