A simple and environmentally friendly method of preparing sulfide photocatalyst

Ching Chen Wu; Hui Fang Cho; Wen Sheng Chang; Tai Chou Lee

doi:10.1016/j.ces.2009.01.052

A simple and environmentally friendly method of preparing sulfide photocatalyst

Ching Chen Wu, Hui Fang Cho, Wen Sheng Chang, Tai Chou Lee

Department of Chemical and Materials Engineering

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

27 Scopus citations

Abstract

This paper reports the preparation of (AgIn)_xZn_2(1-x)S₂ solid solutions from acidic aqueous solutions consisting of silver nitrate, indium nitrate, zinc nitrate, and thioacetamide, without using toxic H₂S gas. The reaction sequence of this multicomponent material was investigated, as well as the post thermal treatment conditions. The formation of quaternary semiconductor solid solutions after 800 °C annealing were determined by X-ray diffraction. The peaks in the XRD patterns shifted to higher angles with an increase of [Zn]/[In] in the precursor solutions. Band gaps of the (AgIn)_xZn_2(1-x)S₂ solid solutions were estimated to be 2.11-2.45 eV by diffuse reflection UV-Vis spectra. In addition, the band gap energy increased with [Zn]/[In] accordingly. The precipitates after heat treatment had a layered structure, as revealed by SEM; the compositions were analyzed by EDS. The photocatalytic H₂ evolution rates in sacrificial reagents under a 300 W Xe lamp of Pt-loaded (AgIn)_xZn_2(1-x)S₂ solid solutions were measured. A H₂ evolution of 340 μmol/h for 0.5 g photocatalyst was obtained. The particles retained the photocatalytic activity for at least 100 h. This study demonstrates that AgInS₂-ZnS solid solution particles can be prepared from a completely aqueous route.

Original language	English
Pages (from-to)	141-147
Number of pages	7
Journal	Chemical Engineering Science
Volume	65
Issue number	1
DOIs	https://doi.org/10.1016/j.ces.2009.01.052
State	Published - 2010

Keywords

Catalysis
Materials processing
Photochemistry
Powders
Visible light
Water splitting

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ces.2009.01.052

Cite this

@article{7855ab48368f42c7bc992c65ce9f670c,

title = "A simple and environmentally friendly method of preparing sulfide photocatalyst",

abstract = "This paper reports the preparation of (AgIn)xZn2(1-x)S2 solid solutions from acidic aqueous solutions consisting of silver nitrate, indium nitrate, zinc nitrate, and thioacetamide, without using toxic H2S gas. The reaction sequence of this multicomponent material was investigated, as well as the post thermal treatment conditions. The formation of quaternary semiconductor solid solutions after 800 °C annealing were determined by X-ray diffraction. The peaks in the XRD patterns shifted to higher angles with an increase of [Zn]/[In] in the precursor solutions. Band gaps of the (AgIn)xZn2(1-x)S2 solid solutions were estimated to be 2.11-2.45 eV by diffuse reflection UV-Vis spectra. In addition, the band gap energy increased with [Zn]/[In] accordingly. The precipitates after heat treatment had a layered structure, as revealed by SEM; the compositions were analyzed by EDS. The photocatalytic H2 evolution rates in sacrificial reagents under a 300 W Xe lamp of Pt-loaded (AgIn)xZn2(1-x)S2 solid solutions were measured. A H2 evolution of 340 μmol/h for 0.5 g photocatalyst was obtained. The particles retained the photocatalytic activity for at least 100 h. This study demonstrates that AgInS2-ZnS solid solution particles can be prepared from a completely aqueous route.",

keywords = "Catalysis, Materials processing, Photochemistry, Powders, Visible light, Water splitting",

author = "Wu, {Ching Chen} and Cho, {Hui Fang} and Chang, {Wen Sheng} and Lee, {Tai Chou}",

note = "Funding Information: This work was supported by the National Science Council of Taiwan (Grant no. NSC 96-ET-7-194-002-ET) and by the Bureau of Energy, Ministry of Economic Affairs of Taiwan (Grant no. 7455VH7200). We are most grateful to Prof. Akihiko Kudo of Science University of Tokyo of Japan for his suggestions. We would like to thank the Instrument Center at National Chung Cheng University for assistance with SEM images and XPS spectra and Instrument Center at National Tsing-Hua University for assistance with TEM images.",

year = "2010",

doi = "10.1016/j.ces.2009.01.052",

language = "???core.languages.en_GB???",

volume = "65",

pages = "141--147",

journal = "Chemical Engineering Science",

issn = "0009-2509",

number = "1",

}

TY - JOUR

T1 - A simple and environmentally friendly method of preparing sulfide photocatalyst

AU - Wu, Ching Chen

AU - Cho, Hui Fang

AU - Chang, Wen Sheng

AU - Lee, Tai Chou

N1 - Funding Information: This work was supported by the National Science Council of Taiwan (Grant no. NSC 96-ET-7-194-002-ET) and by the Bureau of Energy, Ministry of Economic Affairs of Taiwan (Grant no. 7455VH7200). We are most grateful to Prof. Akihiko Kudo of Science University of Tokyo of Japan for his suggestions. We would like to thank the Instrument Center at National Chung Cheng University for assistance with SEM images and XPS spectra and Instrument Center at National Tsing-Hua University for assistance with TEM images.

PY - 2010

Y1 - 2010

N2 - This paper reports the preparation of (AgIn)xZn2(1-x)S2 solid solutions from acidic aqueous solutions consisting of silver nitrate, indium nitrate, zinc nitrate, and thioacetamide, without using toxic H2S gas. The reaction sequence of this multicomponent material was investigated, as well as the post thermal treatment conditions. The formation of quaternary semiconductor solid solutions after 800 °C annealing were determined by X-ray diffraction. The peaks in the XRD patterns shifted to higher angles with an increase of [Zn]/[In] in the precursor solutions. Band gaps of the (AgIn)xZn2(1-x)S2 solid solutions were estimated to be 2.11-2.45 eV by diffuse reflection UV-Vis spectra. In addition, the band gap energy increased with [Zn]/[In] accordingly. The precipitates after heat treatment had a layered structure, as revealed by SEM; the compositions were analyzed by EDS. The photocatalytic H2 evolution rates in sacrificial reagents under a 300 W Xe lamp of Pt-loaded (AgIn)xZn2(1-x)S2 solid solutions were measured. A H2 evolution of 340 μmol/h for 0.5 g photocatalyst was obtained. The particles retained the photocatalytic activity for at least 100 h. This study demonstrates that AgInS2-ZnS solid solution particles can be prepared from a completely aqueous route.

AB - This paper reports the preparation of (AgIn)xZn2(1-x)S2 solid solutions from acidic aqueous solutions consisting of silver nitrate, indium nitrate, zinc nitrate, and thioacetamide, without using toxic H2S gas. The reaction sequence of this multicomponent material was investigated, as well as the post thermal treatment conditions. The formation of quaternary semiconductor solid solutions after 800 °C annealing were determined by X-ray diffraction. The peaks in the XRD patterns shifted to higher angles with an increase of [Zn]/[In] in the precursor solutions. Band gaps of the (AgIn)xZn2(1-x)S2 solid solutions were estimated to be 2.11-2.45 eV by diffuse reflection UV-Vis spectra. In addition, the band gap energy increased with [Zn]/[In] accordingly. The precipitates after heat treatment had a layered structure, as revealed by SEM; the compositions were analyzed by EDS. The photocatalytic H2 evolution rates in sacrificial reagents under a 300 W Xe lamp of Pt-loaded (AgIn)xZn2(1-x)S2 solid solutions were measured. A H2 evolution of 340 μmol/h for 0.5 g photocatalyst was obtained. The particles retained the photocatalytic activity for at least 100 h. This study demonstrates that AgInS2-ZnS solid solution particles can be prepared from a completely aqueous route.

KW - Catalysis

KW - Materials processing

KW - Photochemistry

KW - Powders

KW - Visible light

KW - Water splitting

UR - http://www.scopus.com/inward/record.url?scp=72149132798&partnerID=8YFLogxK

U2 - 10.1016/j.ces.2009.01.052

DO - 10.1016/j.ces.2009.01.052

M3 - 期刊論文

AN - SCOPUS:72149132798

SN - 0009-2509

VL - 65

SP - 141

EP - 147

JO - Chemical Engineering Science

JF - Chemical Engineering Science

IS - 1

ER -

A simple and environmentally friendly method of preparing sulfide photocatalyst

Abstract

Keywords

UN SDGs

Access to Document

Fingerprint

Cite this