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Photocatalytic Hydrogen Production from Water on Ga, Sn-doped ZnS under Visible Light Irradiation

Zinc sulfide (ZnS) has been reported to act as a photocatalyts to reduce water to hydrogen. However, ZnS could not work under visible light irradiation due to its large band gap energy. In order to improve the performance of ZnS, Ga and Sn were doped to ZnS. The series of Ga(0.1),Sn(x)-ZnS with vari...

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Main Authors: Leny, Yuliati, Kimi, Melody, Mustaffa, Shamsuddin
Format: E-Article
Language:English
Published: Trans Tech Publications 2014
Subjects:
QD Chemistry
Online Access:http://ir.unimas.my/id/eprint/7020/1/GaSnZnS%20published-001.pdf
http://ir.unimas.my/id/eprint/7020/
http://www.scientific.net/AMR.925.200
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spelling my.unimas.ir.70202015-09-10T03:30:45Z http://ir.unimas.my/id/eprint/7020/ Photocatalytic Hydrogen Production from Water on Ga, Sn-doped ZnS under Visible Light Irradiation Leny, Yuliati Kimi, Melody Mustaffa, Shamsuddin QD Chemistry Zinc sulfide (ZnS) has been reported to act as a photocatalyts to reduce water to hydrogen. However, ZnS could not work under visible light irradiation due to its large band gap energy. In order to improve the performance of ZnS, Ga and Sn were doped to ZnS. The series of Ga(0.1),Sn(x)-ZnS with various amounts of Sn (x) was prepared by hydrothermal method. XRD patterns suggested that the addition of Ga might reduce the crystallinity of ZnS, suggesting that Ga might inhibit the crystal growth or agglomeration of ZnS. On the other hand addition of Sn did not much affect the structure of the Ga(0.1)-ZnS. The DR UU-visible spectra confirmed the red shift of the absorption edge with the addition of Ga due to the reduced band gap energy, while the addition of Sn did not much shift the absorption edge of the Ga(0.1)-ZnS to longer wavelength. FESEM images showed that all the prepared samples have sphere-shaped particles and no remarkable change was observed with the addition of Ga or Sn. The photocatalytic hydrogen production from water was carried out at room temperature in the presence of sacrificial agent under visible light irradiation. While ZnS did not show activity under visible light, all the prepared Ga(0.1)-ZnS and Ga(0.1),Sn(x)-ZnS samples exhibited photocatalytic activity for hydrogen production. The highest hydrogen production was achieved on Ga(0.1),Sn(0.01)-ZnS, which activity was ca. three times higher than that of the single doped Ga(0.1)-ZnS. This study clearly showed that Sn acted as a good co-dopant to increase the photocatalytic activity of Ga(0.1)-ZnS for hydrogen production from water under visible light irradiation. Trans Tech Publications 2014-04 E-Article PeerReviewed text en http://ir.unimas.my/id/eprint/7020/1/GaSnZnS%20published-001.pdf Leny, Yuliati and Kimi, Melody and Mustaffa, Shamsuddin (2014) Photocatalytic Hydrogen Production from Water on Ga, Sn-doped ZnS under Visible Light Irradiation. Advanced Materials Research, 925. pp. 200-204. ISSN 1662-8985 http://www.scientific.net/AMR.925.200 doi:10.4028/www.scientific.net/AMR.925.200
institution Universiti Malaysia Sarawak
building Centre for Academic Information Services (CAIS)
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sarawak
content_source UNIMAS Institutional Repository
url_provider http://ir.unimas.my/
language English
topic QD Chemistry
spellingShingle QD Chemistry
Leny, Yuliati
Kimi, Melody
Mustaffa, Shamsuddin
Photocatalytic Hydrogen Production from Water on Ga, Sn-doped ZnS under Visible Light Irradiation
description Zinc sulfide (ZnS) has been reported to act as a photocatalyts to reduce water to hydrogen. However, ZnS could not work under visible light irradiation due to its large band gap energy. In order to improve the performance of ZnS, Ga and Sn were doped to ZnS. The series of Ga(0.1),Sn(x)-ZnS with various amounts of Sn (x) was prepared by hydrothermal method. XRD patterns suggested that the addition of Ga might reduce the crystallinity of ZnS, suggesting that Ga might inhibit the crystal growth or agglomeration of ZnS. On the other hand addition of Sn did not much affect the structure of the Ga(0.1)-ZnS. The DR UU-visible spectra confirmed the red shift of the absorption edge with the addition of Ga due to the reduced band gap energy, while the addition of Sn did not much shift the absorption edge of the Ga(0.1)-ZnS to longer wavelength. FESEM images showed that all the prepared samples have sphere-shaped particles and no remarkable change was observed with the addition of Ga or Sn. The photocatalytic hydrogen production from water was carried out at room temperature in the presence of sacrificial agent under visible light irradiation. While ZnS did not show activity under visible light, all the prepared Ga(0.1)-ZnS and Ga(0.1),Sn(x)-ZnS samples exhibited photocatalytic activity for hydrogen production. The highest hydrogen production was achieved on Ga(0.1),Sn(0.01)-ZnS, which activity was ca. three times higher than that of the single doped Ga(0.1)-ZnS. This study clearly showed that Sn acted as a good co-dopant to increase the photocatalytic activity of Ga(0.1)-ZnS for hydrogen production from water under visible light irradiation.
format E-Article
author Leny, Yuliati
Kimi, Melody
Mustaffa, Shamsuddin
author_facet Leny, Yuliati
Kimi, Melody
Mustaffa, Shamsuddin
author_sort Leny, Yuliati
title Photocatalytic Hydrogen Production from Water on Ga, Sn-doped ZnS under Visible Light Irradiation
title_short Photocatalytic Hydrogen Production from Water on Ga, Sn-doped ZnS under Visible Light Irradiation
title_full Photocatalytic Hydrogen Production from Water on Ga, Sn-doped ZnS under Visible Light Irradiation
title_fullStr Photocatalytic Hydrogen Production from Water on Ga, Sn-doped ZnS under Visible Light Irradiation
title_full_unstemmed Photocatalytic Hydrogen Production from Water on Ga, Sn-doped ZnS under Visible Light Irradiation
title_sort photocatalytic hydrogen production from water on ga, sn-doped zns under visible light irradiation
publisher Trans Tech Publications
publishDate 2014
url http://ir.unimas.my/id/eprint/7020/1/GaSnZnS%20published-001.pdf
http://ir.unimas.my/id/eprint/7020/
http://www.scientific.net/AMR.925.200
_version_ 1644510191994011648
score 13.211869

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