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Synthesis of Magnetic UiO-66 Composites for the Adsorption of Nitro Phenol Organic Molecules in Water
Author NameAffiliationE-mail
YANG Qing-Xiang Mechanical and Electrical Engineering Institute, ZhengzhouUniversity of Light Industry, Zhengzhou 450002, China  
REN Shuang-Shuang Mechanical and Electrical Engineering Institute, ZhengzhouUniversity of Light Industry, Zhengzhou 450002, China  
ZHAO Qian-Qian Mechanical and Electrical Engineering Institute, ZhengzhouUniversity of Light Industry, Zhengzhou 450002, China  
CHEN Zhi-Jun Mechanical and Electrical Engineering Institute, ZhengzhouUniversity of Light Industry, Zhengzhou 450002, China chenzj@zzuli.edu.cn 
Abstract: Magnetic porous composites of Fe3O4@SiO2-PSS@UiO-66 were prepared by hydrothermal method. The microstructure and morphology was characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscope (SEM), infrared (IR), thermogravimetric analysis (TG), vibrating sample magnetometer (VSM) and N2 adsorption-desorption. The results show that magnetic UiO-66 composites are a core shell structure with spherical Fe3O4 as core and cubic MOF as shell. The composites show good superparamagnetism. The adsorption performance of 2-nitroresorcinolon Fe3O4@SiO2-PSS@UiO-66 was further studied. And the effects of contact time, adsorbent dose and initial 2-nitroresorcinol concentration on the adsorption process were explored. The results show that the maximum adsorption capacity is 161.36 mg·g-1 in following experimental conditions:contact time is 120 min, adsorbent dose is 5 mg, initial 2-nitroresorcinol concentration is 400 mg·L-1. In addition, the higher adsorption efficiency of 2-nitroresorcinol on magnetic UiO-66 composites may be due to the electrostatic interaction and π-π interaction of phenyl ring between UiO-66 and 2-nitroresorcinol.
Keywords: magnetic UiO-66 composites  2-nitroresorcinol  adsorption performance  electrostatic attraction  π-π interaction
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YANG Qing-Xiang,REN Shuang-Shuang,ZHAO Qian-Qian,CHEN Zhi-Jun.Synthesis of Magnetic UiO-66 Composites for the Adsorption of Nitro Phenol Organic Molecules in Water[J].Chinese Journal of Inorganic Chemistry,2017,33(5):843-852.
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Chinese Journal of Inorganic Chemistry