Advances in Materials Science and Engineering (Jan 2013)

Facile Postsynthesis of N-Doped TiO2-SBA-15 and Its Photocatalytic Activity

  • Thu Phuong Tran Thi,
  • Duc Trieu Nguyen,
  • Tuan Quang Duong,
  • Huy Hoang Luc,
  • Vien Vo

DOI
https://doi.org/10.1155/2013/638372
Journal volume & issue
Vol. 2013

Abstract

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N-doped TiO2-SBA-15 (denoted as N-TiO2-SBA-15) material has been successfully synthesized by a two-step procedure. Firstly, TiO2-SBA-15 was prepared by impregnating tetraisopropyl orthotitanate on SBA-15 and followed by calcination at 550°C. In the second step, TiO2-SBA-15 was modified by doping nitrogen with the assistance of urea. The resulting material, N-TiO2-SBA-15, was characterized by XRD, TEM, SEM, N2 adsorption/desorption at 77 K, DR UV-Vis, and XPS. The results showed that N-TiO2-SBA-15 material maintains its ordered hexagonal mesostructure and exhibits the absorption of visible region. The photocatalytic activity of N-TiO2-SBA-15 sample was evaluated by the photodegradation of methylene blue under visible light.