화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.45, 229-236, January, 2017
DOI10.1016/j.jiec.2016.09.027  Export Citation
One-step synthesis of amine-functionalized TiO2 surface for photocatalytic decolorization under visible light irradiation
Rachan Klaysri, Tassanee Tubchareon, and Piyasan Praserthdam†
  • Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
E-mail:
One-step 3-aminopropyltriethoxysilane (APTES) modification surface of TiO2 was successfully prepared for photocatalyts. The modified TiO2 was characterized by means of techniques. As results, the monolayer and/or multilayer amino-silane coverage on TiO2 surface substantially decreased the indirect band gap, leading to the formation of Si-N intermediate level within band gap and suppressing the electron-hole recombination. It subsequently enhanced the photoactivity. With increasing APTES contents, the c-value decreased whereas the formation of NH2 and the oxygen chemisorption were apparently increased. However, the difference in APTES concentration significantly affected the hydrophobicity. The reduction in NH3 + played an essential role in the retarding of photoactivity.
Keywords:TiO2 nanocatalyst;APTES;Amine;Hydrophobic;Photocatalyst
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