PMID- 15484768
OWN - NLM
STAT- MEDLINE
DCOM- 20041222
LR  - 20131121
IS  - 0273-1223 (Print)
IS  - 0273-1223 (Linking)
VI  - 50
IP  - 4
DP  - 2004
TI  - Photocatalytic degradation of toluene by platinized titanium dioxide 
      photocatalysts.
PG  - 251-6
AB  - A photoreactor has been set up to study the photodegradation of volatile organic 
      compound (VOC) in situ. In the reactor, TiO2 and Pt/TiO2 photocatalysts were 
      immobilized on to UV-transparent quartz support. Scanning electron microscope 
      (SEM) studies and Brunauer-Emmett-Teller (BET) surface area measurements revealed 
      that the quartz fiber support was mostly coated with catalyst with a total 
      surface area of 4.0 +/- 0.3 m2/g. The photocatalytic activity of the 
      photocatalysts was evaluated for the photodegradation of 160 ppm toluene-laden 
      air. It was found that 50-70% of toluene was degraded within the first 5 min of 
      UV illumination. Both TiO2 and Pt/TiO2 photocatalysts suffered from deactivation 
      after 18 hours of continuous operation, and the photocatalysts' activity was 
      significantly reduced. However, platinization doubled the photocatalyst life and 
      delayed the onset of de-activation. The presence of moisture was found to shift 
      the onset of catalyst de-activation to an earlier time. It is concluded that the 
      de-activation of the photocatalyst was due to the accumulation of intermediates 
      on the photocatalysts surface preventing the toluene being adsorbed on the 
      photocatalyst surface for degradation.
FAU - Young, C
AU  - Young C
AD  - Centre for Particle and Catalyst Technologies, School of Chemical Engineering and 
      Industrial Chemistry, The University of New South Wales, Sydney, NSW, 2052, 
      Australia.
FAU - Lim, T M
AU  - Lim TM
FAU - Chiang, K
AU  - Chiang K
FAU - Amal, R
AU  - Amal R
LA  - eng
PT  - Journal Article
PL  - England
TA  - Water Sci Technol
JT  - Water science and technology : a journal of the International Association on 
      Water Pollution Research
JID - 9879497
RN  - 0 (Air Pollutants)
RN  - 0 (Coloring Agents)
RN  - 15FIX9V2JP (titanium dioxide)
RN  - 3FPU23BG52 (Toluene)
RN  - 49DFR088MY (Platinum)
RN  - D1JT611TNE (Titanium)
SB  - IM
MH  - Air Pollutants/*isolation & purification
MH  - Catalysis
MH  - Coloring Agents/*chemistry
MH  - Photochemistry
MH  - Platinum/chemistry
MH  - Titanium/*chemistry
MH  - Toluene/chemistry/*isolation & purification
EDAT- 2004/10/16 09:00
MHDA- 2004/12/23 09:00
CRDT- 2004/10/16 09:00
PHST- 2004/10/16 09:00 [pubmed]
PHST- 2004/12/23 09:00 [medline]
PHST- 2004/10/16 09:00 [entrez]
PST - ppublish
SO  - Water Sci Technol. 2004;50(4):251-6.