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

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Heterojunction photocatalyst TiO2/AgGaS2 for hydrogen production from water under visible light

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Title
Heterojunction photocatalyst TiO2/AgGaS2 for hydrogen production from water under visible light
Other Titles
Heterojunction photocatalyst TiO2/AgGaS2 for hydrogen production from water under visible light
Author
Jang, Jum SukHong, Suk JunKim, Jae YulLee, Jae Sung
Keywords
BULK COMPOSITE PHOTOCATALYSTS; SOLID-SOLUTION PHOTOCATALYST; H-2 EVOLUTION; ELECTROLYTE-SOLUTION; CDS NANOPARTICLES; AQUEOUS-SOLUTIONS; IRRADIATION; TIO2; NM; NANOCOMPOSITE
Issue Date
2009-06
Publisher
ELSEVIER SCIENCE BV
Citation
CHEMICAL PHYSICS LETTERS, v.475, no.1-3, pp.78 - 81
Abstract
A heterojunction photocatalyst TiO2/AgGaS2 consisting of bulky AgGaS2 with high crystallinity decorated with nanosized TiO2 particles was successfully fabricated by solid state reaction and sol-gel synthesis. TiO2 itself was inactive under visible light, but its combination with AgGaS2 improved greatly the rate of hydrogen production of AgGaS2 from water containing Na2S/Na2SO3 as sacrificial reagents under visible light irradiation. The fabrication method of the heterojunction photocatalysts was critical for their performance. This configuration of photocatalyst results in an efficient charge separation at the interface, followed by fast diffusion of photoelectrons generated in AgGaS2 towards surrounding TiO2 leading to high photocatalytic activity of hydrogen production. (c) 2009 Elsevier B.V. All rights reserved
URI
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DOI
10.1016/j.cplett.2009.05.012
ISSN
0009-2614
Appears in Collections:
ECHE_Journal Papers
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