Preparation and adsorption properties of graphene-based molecularly imprinted aerogels

被引：0
|
作者：
Feng R.-P. [1 ]
Guo M. [1 ,2 ]
Wang J. [2 ]
Xiong M. [1 ]
Fu H.-Y. [1 ]
Shao Y. [2 ]
Sun L.-P. [3 ]
机构：
[1] College of Science, Zhejiang Agriculture and Forestry University, Hangzhou
[2] College of Engineering, Zhejiang Agriculture and Forestry University, Hangzhou
[3] School of Environmental Management, Zhejiang Agriculture and Forestry University, Hangzhou
来源：
Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities | 2021年 / 35卷 / 01期
关键词：
Adsorption and degradation; Benzo [α] pyrene; Graphene; Molecularly imprinted aerogel;
D O I：
10.3969/j.issn.1003-9015.2021.01.021
中图分类号：
学科分类号：
摘要：
Nano-iron oxide (γ-Fe2O3) and TiO2 were loaded onto graphene oxide (GO) as molecular skeleton for magnetic and photocatalytic properties, and benzo [α] pyrene (BaP) was used as a template to synthesize gaphene-based molecularly imprinted aerogel (GMIA) with the ability of recognizing and degrading BaP. Intermediates and final products were characterized by Fourier infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray energy spectroscopy (EDS). Gas chromatography together with gas chromatography-mass spectrometry (GC-MS) was used to analysis GMIA enrichment and BaP recognition and degradation efficiency, and the adsorption kinetics, adsorption mechanism and degradation mechanism were analyzed. The results show that GMIA efficiently recognizes BaP with equilibrium adsorption capacity of 236.891 ng∙g-1. The recognized imprinting factor α=2.35 is much higher than that of graphene-based non-molecularly imprinted aerogel (GNMIA). The adsorption behavior follows to the second-order kinetic adsorption model. Compared with GNMIA Ultraviolet radiation, GMIA has remarkable degradation property for complete BaP degradation. Moreover, it has better recycling performance after adsorption-desorption treatments. © 2021, Editorial Board of "Journal of Chemical Engineering of Chinese Universities". All right reserved.
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页码：181 / 190
页数：9
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