A new efficient visible-light photocatalyst made of SnO2 and cyclized polyacrylonitrile

作者：Li, Xinbao; Peng, Tianxiao; Zhang, Yongcai^*; Wen, Yaoting; Nan, Zhaodong^*

来源：Materials Research Bulletin, 2018, 97: 517-522.

DOI：10.1016/j.materresbull.2017.09.055

• composites
• nanostructures
• semiconductors
• chemical synthesis
• catalytic properties

This work reports the synthesis and characterization of a new efficient visible-light photocatalyst comprising SnO2 nanoparticles and cyclized polyacrylonitrile (CPAN). SnO2/CPAN nanocomposite was synthesized through two steps: first, adsorption of polyacrylonitrile (PAN) in N,N-Dimethylformamide solution by SnO2 nanoparticles to form SnO2/PAN nanocomposite; second, cyclization of PAN in the SnO2/PAN nanocomposite by heating at 250 degrees C for 2 h. The characterization by X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, high-resolution transmission electron microscopy, N-2 adsorption-desorption curves, and UV-vis diffuse reflection spectra indicated the synthesis of large surface area SnO2/CPAN nanocomposite with remarkable visible-light-harvesting ability. SnO2/CPAN nanocomposite exhibited exceptionally high photo catalytic activity in the reduction of aqueous Cr(VI) under visible-light (lambda > 420 nm) irradiation (the reaction rate constant of photocatalytic reduction of Cr(VI) by SnO2/CPAN is about 16.6 times that by SnO2). The possible mechanism for the high visible-light-driven photocatalytic activity of SnO2/CPAN nanocomposite was proposed.

• 出版日期2018-1
• 单位扬州大学; 黄冈师范学院