Selective Photodegradation of N-doped TiO2 Molecularly Imprinted Polymer under Visible Light
WEI Shengpei
AN Ya
ZHANG Yang
TIAN Juan
QIN Haoli
Abstract：N-doped TiO2 molecularly imprinted polymer was synthesized by a surface molecular imprinting technique using N-doped TiO2 as the substrate which was synthesized by sol-gel technique,salicylic acid as the template molecule,MAA as the functional monomer,EGDMA and AIBN as cross linking agent and initiator,respectively.The samples were characterized by FT-IR,XRD,TEM,UV-Vis diffuse reflectance spectrophotometer and N2 adsorption-desorption.The results indicated that all titania were anatase,and the particle size distributed uniformly in the range of 10～20 nm;the redshift of absorption band was caused by nitrogen doped to TiO2.An organic modified layer was formed on the surface of nitrogen doped TiO2 by the surface molecular imprinting process,which increased slightly the particle size,changed the shape of hysteresis loop and the distribution of pore,formed a large number of small holes of 2.2 nm,and increased the specific surface area.Compared with benzoic acid and methyl orange,it showed a good selectivity for the target pollutants salicylic acid under the visible light,the selectivity coefficient was at 1.1～1.7.
Keywords：titanianitrogen-dopedmolecular imprintingvisible lightselectivity
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 36-42 )