Inorganic-framework Molecularly Imprinted Cds/TiO2 for Selectively Photocatalytic Degradation of Di (2-ethylhexyl) Phthalate.

Fangyan Chen; Yiming Liu; Xi Zhang; Lina He; Yubin Tang

Author(s)

Fangyan Chen School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212005, P. R. China

Yiming Liu School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212005, P. R. China

Xi Zhang School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212005, P. R. China

Lina He School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212005, P. R. ChinaZhangjiagang Industrial Technology Research Institute, Jiangsu University of Science and Technology, Zhangjiagang, 215600, P. R. China

Yubin Tang School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212005, P. R. China; Zhangjiagang Industrial Technology Research Institute, Jiangsu University of Science and technology Zhangjiagang 215600, P.R. China

Abstract

Summary: In order to improve the photocatalytic efficiency and selectivity of di (2-ethylhexyl) phthalate (DEHP) under solar-driven, the inorganic-framework molecularly imprinted CdS/TiO2, named as MIP-CdS/TiO2, was prepared by using DEHP as template molecule and tetrabutyl titanate as titanium source and functional monomer. The as-prepared MIP-CdS/TiO2 was characterized by scanning electron microscopy (SEM), X-ray energy spectrum (EDS), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), UV-Vis Spectroscopy (UV-vis), X-ray photoelectron spectroscopy (XPS) and photoluminescence spectrum (PL). And the specific recognition and photocatalytic selectivity of MIP-CdS/TiO2 to DEHP were investigated. The results show that inorganic-framework molecular imprinting on the surface of CdS/TiO2 can result in existence of specific recognition sites of DEHP, extend and intensify the absorption visible light of CdS/TiO2, inhibit the recombination of the photo-induced electron-holes pairs. MIP-CdS/TiO2 has a specific recognition to DEHP. The binding selectivity coefficients of DEHP relative to its analogues DBP and DMP are 2.78 and 2.60, respectively. Compared with CdS/TiO2, MIP-CdS/TiO2 exhibits higher photocatalytic activity and selectivity for DEHP. Under simulated solar light irradiation, the degradation efficiency of DEHP photocatalyzed by MIP-CdS/TiO2 is 75.5%, which is 1.63 times as high as that of DEHP photocatalyzed by CdS/TiO2.

Publication Details

Page(s) 308-318

DOI DOI not available

Published Journal: Journal of Chemical Society of Pakistan, Volume: 41, Issue: 2, Year: 2019

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