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Query: KEGG:D01931 (
TiO2
)
11,320
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
In order to enhance the photoreduction of CO2 to CH4, a new type of photocatalyst,
Sb1
.5Sn8.5-xTixO19.0, with high conductivity and low bandgap was developed by partially incorporating Ti into the framework of
Sb1
.5Sn8.5O19.0 (antimony-doped tin oxide, ATO) using a controlled hydrothermal method. XRD and TEM analyses indicated that the
Sb1
.5Sn8.5-xTixO19.0 particles exhibited a tetragonal crystal structure and were approximately 20 nm in size. Furthermore, the bandgap and conductivity of these materials increased with increasing Ti content. A study of the photoreduction of CO2 with H2O revealed a remarkable increase in the generation of CH4 over the
Sb1
.5Sn8.5-xTixO19.0 catalysts. In particular, CH4 generation was the highest when
Sb1
.5Sn8.5Ti1.0O19.0 was used as the photocatalyst, and was three-fold higher than that achieved by using anatase
TiO2
. Photoluminescence studies showed that the enhanced photocatalytic activity of the
Sb1
.5Sn8.5-xTixO19.0 materials could be attributed to the interfacial transfer of photogenerated charges, which led to an effective charge separation and inhibition of the recombination of photogenerated electron-hole (e-/h+) pairs.
...
PMID:Photoreduction of Carbon Dioxide to Methane Over Sb
1.5
Sn
8.5-
x
Ti
x
O
19.0
with High Conductivity. 2967 99
