Thermal stability of rutile TiO2 with high specific surface area synthesized by self-hydrolysis process

Miki Inada, Kei Mizue, Naoya Enomoto, Junichi Hojo

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7 Citations (Scopus)

Abstract

Rutile with high specific surface area (SSA) was synthesized by self-hydrolysis of TiOCl2 with sodium dodecyl sulfate (SDS) addition. The aggregates of rutile acicular particles with SSA of 120 m2/g formed from 0.5 M TiOCl2 at 50 °C for 24 h. When SDS was added to 0.5 M TiOCl2, the roundish particles surrounded by small acicular rutile formed and the SSA were 210 m2/g at 0.1 M and 340 m2/g at 0.5 M SDS. These results indicate that SDS addition was effective for the synthesis of rutile with high SSA. When heat treatment was carried out at 400 °C in air, the particle coarsening of rutile was observed by XRD and SEM and the SSA decreased, which indicates that thermal stability of rutile with high SSA was low. The addition of SnCl4 to starting solution was effective to improve the thermal stability of rutile with high SSA.

Original languageEnglish
Pages (from-to)102-106
Number of pages5
JournalScience of Advanced Materials
Volume2
Issue number1
DOIs
Publication statusPublished - Mar 1 2010

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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