Dynamic Hydrogen Production from MethanolWater Photo-Splitting Using Core@Shell-Structured CuS@TiO2 Catalyst Wrapped by High Concentrated TiO2 Particles
Joint Authors
Kang, Sora
Kim, Kang Min
Kang, Misook
Lee, Tae Jin
Im, Younghwan
Ju, Taeil
Han, Gi Bo
Park, No-Kuk
Source
International Journal of Photoenergy
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-09-03
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
This study focused on the dynamic hydrogen production ability of a core@shell-structured CuS@TiO2 photocatalyst coated with a high concentration of TiO2 particles.
The rectangular-shaped CuS particles, 100 nm in length and 60 nm in width, were surrounded by a high concentration of anatase TiO2 particles (>4~5 mol).
The synthesized core@shell-structured CuS@TiO2 particles absorbed a long wavelength (a short band gap) above 700 nm compared to that pure TiO2, which at approximately 300 nm, leading to easier electronic transitions, even at low energy.
Hydrogen evolution from methanol/water photo-splitting over the core@shell-structured CuS@TiO2 photocatalyst increased approximately 10-fold compared to that over pure CuS.
In particular, 1.9 mmol of hydrogen gas was produced after 10 hours when 0.5 g of 1CuS@4TiO2 was used at pH = 7.
This level of production was increased to more than 4-fold at higher pH.
Cyclic voltammetry and UV-visible absorption spectroscopy confirmed that the CuS in CuS@TiO2 strongly withdraws the excited electrons from the valence band in TiO2 because of the higher reduction potential than TiO2, resulting in a slower recombination rate between the electrons and holes and higher photoactivity.
American Psychological Association (APA)
Im, Younghwan& Kang, Sora& Kim, Kang Min& Ju, Taeil& Han, Gi Bo& Park, No-Kuk…[et al.]. 2013. Dynamic Hydrogen Production from MethanolWater Photo-Splitting Using Core@Shell-Structured CuS@TiO2 Catalyst Wrapped by High Concentrated TiO2 Particles. International Journal of Photoenergy،Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-472716
Modern Language Association (MLA)
Im, Younghwan…[et al.]. Dynamic Hydrogen Production from MethanolWater Photo-Splitting Using Core@Shell-Structured CuS@TiO2 Catalyst Wrapped by High Concentrated TiO2 Particles. International Journal of Photoenergy No. 2013 (2013), pp.1-10.
https://search.emarefa.net/detail/BIM-472716
American Medical Association (AMA)
Im, Younghwan& Kang, Sora& Kim, Kang Min& Ju, Taeil& Han, Gi Bo& Park, No-Kuk…[et al.]. Dynamic Hydrogen Production from MethanolWater Photo-Splitting Using Core@Shell-Structured CuS@TiO2 Catalyst Wrapped by High Concentrated TiO2 Particles. International Journal of Photoenergy. 2013. Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-472716
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-472716