화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.38, No.9, 1913-1922, September, 2021
DOI10.1007/s11814-021-0843-z  Export Citation
Preparation of N-TiO2/RGO nanocomposites through sol-gel method
Yudi Ma, Shukun Wang, Wanlan Zheng, Xin Xue, Huie Liu†, Shuang Chen, and Yiwen Zhu
  • College of Chemical Engineering, China University of Petroleum Huadong, Qingdao 266580, Shandong Prov., China
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Nitrogen-doped TiO2 and reduced graphene oxide (RGO) nanocomposites (NTG) were prepared by solgel method followed by annealing treatment process under N2 atmosphere. The as-prepared NTG nanocomposite were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FT-IR) and ultraviolet-visible diffuse reflectance spectroscopy (DRS). The results indicate that the incorporation of nitrogen onto both RGO and TiO2 was accomplished simultaneously in the facile process. Nitrogen doping makes the light excitation range red shift and can enhance the electron-hole separation effectively. The photocatalytic activity of the as-prepared samples was evaluated through the degradation of methyl orange (MO) under visible light irradiation. The introduction of nitrogen increased the photodegradation activity, which can be indicated by the fitted apparent first-order kinetics rate constant k, increasing about four times from 0-NTG-450 to 15-NTG-450. The annealing treatment further increased the photodegradation activity about 1.5 times of 15NTG-450 for 15NTG-800.
Keywords:Nitrogen-doped TiO2;Reduced Graphene Oxide;Sol-gel Method;Methyl Orange;Visible Light Irradiation
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