BROWSE

Related Researcher

Author's Photo

Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

ITEM VIEW & DOWNLOAD

AgGaS2-type photocatalysts for hydrogen production under visible light: Effects of post-synthetic H2S treatment

Cited 17 times inthomson ciCited 17 times inthomson ci
Title
AgGaS2-type photocatalysts for hydrogen production under visible light: Effects of post-synthetic H2S treatment
Other Titles
AgGaS2-type photocatalysts for hydrogen production under visible light: Effects of post-synthetic H2S treatment
Author
Jang, Jum SukChoi, Sun HeeShin, NanisooYu, ChungjongLee, Jae Sung
Keywords
AgGaS2; photocatalyst; visible light; hydrogen production; H2S treatment
Issue Date
2007-03
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
Citation
JOURNAL OF SOLID STATE CHEMISTRY, v.180, no.3, pp.1110 - 1118
Abstract
Bulky AgGaS2 was synthesized as a p-type semiconductor photocatalyst by a conventional solid state reaction under N, flow for hydrogen production under visible light. To remove impurity phases involved in the synthesized material and improve crystallinity, the material was treated at various temperatures of 873-1123 K under H2S flow. Impurity phases were identified as beta-GaO3 and Ag9GaS6 with the cell refinements of XRD and the local coordination structure around gallium atom in AgGaS2 was investigated by EXAFS. As the H2S-treatment temperature increased, the contribution from impurity phases was diminished. When the temperature reached 1123 K, the impurity phases were completely removed and the material showed the highest photocatalytic activity. Thus, the post-synthetic H'S treatment could be applied for the synthesis of sulfide-type photocatalysts with high activity. (c) 2007 Elsevier Inc. All rights reserved
URI
Go to Link
DOI
10.1016/j.jssc.2007.01.008
ISSN
0022-4596
Appears in Collections:
ECHE_Journal Papers
Files in This Item:
1-s2.0-S0022459607000254-main.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU