TY - JOUR
T1 - Sol-gel synthesis of porous crystalline TiO2-P2O 5 oxide with thermal stability
AU - Li, Donglin
AU - Zhou, Haoshen
AU - Hibino, Mitsuhiro
AU - Honma, Itaru
N1 - Funding Information:
Donglin Li acknowledges the financial support of the Japanese Society of the Promotion of Science (JSPS) Fellowship for work carried out at the Institute of Energy Electronics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Center, Japan.
PY - 2003/12
Y1 - 2003/12
N2 - Porous TiO2-P2O5 oxide was synthesized by the sol-gel method in the presence of tri-block copolymer (EO) 20(PO)70(EO)20 (Pluronic 123) in queous solution. The TiO2 nanocrystals with anatase structure precipitated in the as-synthesized TiO2-P2O5 materials at 80°C, considerably lower than that for traditional heat treatment in the solid state, which maintained a stable size of 3.6-4 nm upon calcinations below 500°C. It is believed that P2O5 glass phase prevents the coarsening of TiO2 nanocrystals below 500°C. The mixed oxide exhibited a specific surface area of 170-200 m2/g after calcining in the temperature range of 300-500°C.
AB - Porous TiO2-P2O5 oxide was synthesized by the sol-gel method in the presence of tri-block copolymer (EO) 20(PO)70(EO)20 (Pluronic 123) in queous solution. The TiO2 nanocrystals with anatase structure precipitated in the as-synthesized TiO2-P2O5 materials at 80°C, considerably lower than that for traditional heat treatment in the solid state, which maintained a stable size of 3.6-4 nm upon calcinations below 500°C. It is believed that P2O5 glass phase prevents the coarsening of TiO2 nanocrystals below 500°C. The mixed oxide exhibited a specific surface area of 170-200 m2/g after calcining in the temperature range of 300-500°C.
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U2 - 10.1557/JMR.2003.0381
DO - 10.1557/JMR.2003.0381
M3 - Article
AN - SCOPUS:0742286217
SN - 0884-2914
VL - 18
SP - 2743
EP - 2746
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 12
ER -