Sol-gel synthesis of porous crystalline TiO2-P2O 5 oxide with thermal stability

Donglin Li, Haoshen Zhou, Mitsuhiro Hibino, Itaru Honma

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)2743-2746
Number of pages4
JournalJournal of Materials Research
Issue number12
Publication statusPublished - 2003 Dec


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