Nanocrystalline TiO2 by three different synthetic approaches: A comparison

Bulletin of materials science

T V Anuradha¹  S Ranganathan¹ 

[1] Department of Materials Engineering, Indian Institute of Science, Bangalore 560 012, India$$Department of Materials Engineering, Indian Institute of Science, Bangalore 560 012, IndiaDepartment of Materials Engineering, Indian Institute of Science, Bangalore 560 012, India$$

关键词: Nanocrystalline;    templating;    surfactant;    mechanochemical;    planetary ball mill;    combustion.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

A comparison of the efficiency of three different synthetic routes viz. solâ€�?�gel method involving templating, mechanochemical synthesis and combustion synthesis for the production of nanostructured TiO₂, is reported. In the solâ€�?�gel method, nanocrystalline TiO₂ is produced when titanium tetraisopropoxide is templated onto dodecylamine which forms the liquid crystalline hexagonal structure and the template is then extracted using 1 : 1 solution of ethanolâ€�?�hydrochloric acid mixture. Mechanochemical synthesis of nanocrystalline TiO₂ involved mechanical milling of stoichiometric amounts of titanium and cupric oxide in a planetary ball mill using stainless steel vial with wear resistant stainless steel balls. Nanocrystalline TiO₂ is produced by the combustion reaction involving titanyl nitrate and fuels like glycine and citric acid. Nanostructured TiO₂ with an average particle size of ∼ 14 nm is produced by the solâ€�?�gel method whereas the mechanochemical reaction between titanium and cupric oxide resulted in the formation of nanocrystalline TiO₂ with an average particle size of ∼ 20 nm after 12 h of milling. On the other hand, combustion synthesis resulted in the formation of nanocrystalline TiO₂ with an average particle size of less than ∼ 50 nm. The microstructures of nanocrystalline TiO₂ produced by the above three methods are analysed.

【 授权许可】

Unknown