Preparation of salicylic acid molecularly imprinted and N-doped TiO2 powders and their selective photocatalytic activity under visible light
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    Abstract:

    【Objective】To improve selective degradation ability of catalyst (TiO2)under visible light. 【Method】Salicylic acid molecularly imprinted and N-doped TiO2powders were synthesized by an improved molecularly imprinted sol-gel technique using urea as a nitrogen (N) source and salicylic acid as a template molecule. The samples were characterized by XRD, TEM, UV-Vis diffuse reflectance spectrophotometer and N2 adsorption-desorption.【Result】All samples were anatase.The red-shift of absorption band was caused by doping nitrogen to TiO2 The better-developed pore structure and pass were due to molecular imprinting technique, and the enlarged specific surface area was generated by N-doping and molecularly imprinting. Compared to benzoic acid and methyl orange, TiO2 selective photodegradation rate of salicylic acid (96.0%) was higher under visible light using molecularly imprinting and N-doping.【Conclusion】The selectivity and visible-light photoactivity of TiO2 can be effectively improved using salicylic acid molecularly imprinting and N-doping.

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WEI Shengpei, AN Ya, QIN Haoli. Preparation of salicylic acid molecularly imprinted and N-doped TiO2 powders and their selective photocatalytic activity under visible light[J]. Journal of South China Agricultural University,2016,37(4):134-140

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  • Received:October 29,2015
  • Revised:
  • Adopted:
  • Online: June 30,2016
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