Synthesis of titanium oxide nanocups by electrospraying

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• 作者：Sungyeol Park^a ; Jun Beom Kim^a ; Sungho Lee^b ; Jin Ho Bang^c ; ^{jbang@hanyang.ac.kr} ; Yong Shin Kim^a ; ^c ; ^{yongshin@hanyang.ac.kr}
• 关键词：Titanium oxide ; TiO2 nanocup ; Electrospraying ; Metal oxide nanocup
• 刊名：Materials Letters
• 出版年：2012
• 出版时间：15 February 2012
• 年：2012
• 卷：69
• 期：Complete
• 页码：34-36
• 全文大小：677 K

文摘

Porous titanium oxide nanocups were synthesized via a 550 ¡ãC thermal treatment of hemispherical cup-shaped composite particles prepared by electrospraying a nitromethane solution of titanium tetraisopropoxide and polymethylmethacrylate (PMMA) polymer. During the calcination process, as-electrosprayed cup-like PMMA-TiO₂ composites were converted into miniaturized TiO₂ nanocups without a significant change in shape, via selective removal of PMMA. The TiO₂ nanocups with an outer diameter of around 500 nm were confirmed to form by sintering polycrystalline anatase crystals with an average size of about 20 nm.