TY - JOUR
T1 - Microwave-hydrothermal synthesis of extremely high specific surface area anatase for decomposing NO x
AU - Sitthisang, Sonthikan
AU - Komarneni, Sridhar
AU - Tantirungrotechai, Jonggol
AU - Dong Noh, Young
AU - Li, Huihui
AU - Yin, Shu
AU - Sato, Tsugio
AU - Katsuki, Hiroaki
N1 - Funding Information:
We would like to thank the Young Scientist and Technologist Program from National Science and Technology Development Agency of Thailand for its financial support.
PY - 2012/12
Y1 - 2012/12
N2 - Apparently C-doped and undoped or pure nanoparticles of anatase were synthesized using a microwave hydrothermal process in the temperature range of 140-180 °C for 1 h from several Ti precursors, such as Ti ethoxide, Ti isopropoxide and Ti oxysulfate. Nanoparticles of anatase samples were characterized by powder X-ray diffraction, transmission electron microscopy (TEM) and photocatalytic activity measurements. Results showed that nanoparticles in the size range of 4-17 nm of anatase were obtained in all cases with surface areas in the range of 151-267 m 2/g. The photocatalytic activity of the prepared titanias was measured using methylene blue (MB) and NO x molecules. Because MB has very strong adsorption on the samples, photocatalytic degradation under either solar light or black light irradiation was found to be very limited. However, the DeNO x abilities of carbon-doped titanias were higher than those of Degussa P25 commercial titania sample and undoped or pure titanias especially under irradiation by long wavelength or visible light (>500 nm).
AB - Apparently C-doped and undoped or pure nanoparticles of anatase were synthesized using a microwave hydrothermal process in the temperature range of 140-180 °C for 1 h from several Ti precursors, such as Ti ethoxide, Ti isopropoxide and Ti oxysulfate. Nanoparticles of anatase samples were characterized by powder X-ray diffraction, transmission electron microscopy (TEM) and photocatalytic activity measurements. Results showed that nanoparticles in the size range of 4-17 nm of anatase were obtained in all cases with surface areas in the range of 151-267 m 2/g. The photocatalytic activity of the prepared titanias was measured using methylene blue (MB) and NO x molecules. Because MB has very strong adsorption on the samples, photocatalytic degradation under either solar light or black light irradiation was found to be very limited. However, the DeNO x abilities of carbon-doped titanias were higher than those of Degussa P25 commercial titania sample and undoped or pure titanias especially under irradiation by long wavelength or visible light (>500 nm).
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U2 - 10.1016/j.ceramint.2012.04.057
DO - 10.1016/j.ceramint.2012.04.057
M3 - Article
AN - SCOPUS:84865751057
SN - 0272-8842
VL - 38
SP - 6099
EP - 6105
JO - Ceramics International
JF - Ceramics International
IS - 8
ER -