Open Access System for Information Sharing

Login Library

 

Article
Cited 229 time in webofscience Cited 241 time in scopus
Metadata Downloads

Simultaneous production of hydrogen with the degradation of organic pollutants using TiO2 photocatalyst modified with dual surface components SCIE SCOPUS

Title
Simultaneous production of hydrogen with the degradation of organic pollutants using TiO2 photocatalyst modified with dual surface components
Authors
Kim, JMonllor-Satoca, DChoi, W
Date Issued
2012-06
Publisher
ROYAL SOC CHEMISTRY
Abstract
The simultaneous production of hydrogen and degradation of organic pollutants (4-chlorophenol, urea, and urine) was successfully achieved using titania photocatalysts which were modified with both anion adsorbates (fluoride or phosphate) and (noble) metals (Pt, Pd, Au, Ag, Cu, or Ni). The dual-function photocatalysis worked only when both components coexisted on the surface of TiO2, whereas TiO2 modified with a single surface component (F-TiO2, P-TiO2, or Pt/TiO2) was inactive under the same experimental condition. Two main surface-modified photocatalysts, F-TiO2/Pt (surface fluorinated and platinized) and P-TiO2/Pt (surface phosphated and platinized), were similarly active for dual-function photocatalysis in the anoxic suspension under UV irradiation. With these catalysts employed, the degradation of 4-chlorophenol (or urea) was accompanied by the concurrent production of H-2. The synergistic effect greatly depended on the kind of metal and pH. The activity of F-TiO2/Pt gradually decreased with increasing pH, which makes the application of F-TiO2/Pt limited to the acidic pH region. On the other hand, P-TiO2/Pt exhibited a consistent activity over a wide range of pH, which makes P-TiO2/Pt a more practical dual-function photocatalyst. The synergistic effect of anions and metal deposits on the surface of TiO2 enhanced the interfacial electron transfer and reduced the charge recombination which resulted in a maximum of 20-fold increase of H-2 production compared to metal deposited TiO2 in the presence of 4-chlorophenol.
URI
https://oasis.postech.ac.kr/handle/2014.oak/10152
DOI
10.1039/C2EE21310A
ISSN
1754-5692
Article Type
Article
Citation
ENERGY & ENVIRONMENTAL SCIENCE, vol. 5, no. 6, page. 7647 - 7656, 2012-06
Files in This Item:

qr_code

  • mendeley

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

Related Researcher

Researcher

최원용CHOI, WONYONG
Div of Environmental Science & Enginrg
Read more

Views & Downloads

Browse