PMID- 16853109
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20070626
LR  - 20060720
IS  - 1520-6106 (Print)
IS  - 1520-5207 (Linking)
VI  - 109
IP  - 35
DP  - 2005 Sep 8
TI  - Electrochemical mass spectroscopic and surface photovoltage studies of catalytic 
      water photooxidation by undoped and carbon-doped titania.
PG  - 16579-86
AB  - Carbon-doped TiO2, demonstrated as an efficient photocatalyst in visible light 
      photooxidation of organic compounds, was prepared with different doping 
      concentrations and investigated via differential electrochemical mass 
      spectroscopy (DEMS) and capacitive surface photovoltage (SPV) measurements in the 
      form of thin layer electrodes. In all cases the total photocurrent as well as the 
      surface photovoltage of the doped materials decreased markedly in relation to the 
      undoped one. No detectable oxygen evolved from the doped electrodes in acidic 
      solution under UV-light excitation. Since an oxidation of formic acid is still 
      apparent, it is concluded that this oxidation occurs via isolated, catalytically 
      poorly active trap states within the forbidden energy region. The existence of 
      these states is confirmed by capacitive SPV measurements.
FAU - Neumann, Bernhard
AU  - Neumann B
AD  - Department Solare Energetik, Hahn-Meitner-Institut, Glienickerstrasse 100, 
      D-14109 Berlin, Germany. bernhard.neumann@hmi.de
FAU - Bogdanoff, Peter
AU  - Bogdanoff P
FAU - Tributsch, Helmut
AU  - Tributsch H
FAU - Sakthivel, Shanmugasundaram
AU  - Sakthivel S
FAU - Kisch, Horst
AU  - Kisch H
LA  - eng
PT  - Journal Article
PL  - United States
TA  - J Phys Chem B
JT  - The journal of physical chemistry. B
JID - 101157530
EDAT- 2006/07/21 09:00
MHDA- 2006/07/21 09:01
CRDT- 2006/07/21 09:00
PHST- 2006/07/21 09:00 [pubmed]
PHST- 2006/07/21 09:01 [medline]
PHST- 2006/07/21 09:00 [entrez]
AID - 10.1021/jp051339g [doi]
PST - ppublish
SO  - J Phys Chem B. 2005 Sep 8;109(35):16579-86. doi: 10.1021/jp051339g.