Catalyzed oxidative degradation of methyl orange over Au catalyst prepared by ionic liquid-polymer modified silica

2015 Global Conference on Polymer and Composite Materials

材料科学;化学

Wang, Y.^1 ; Guo, J.S.^1

Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, 2999 North Renmin Road, Shanghai

201620, China^1

关键词: Catalytic degradation;    Catalytic effects;    Catalyzed oxidative degradation;    Degradation of methyl oranges;    Fourier transform infrared spectra;    Ionic liquid monomers;    Methylimidazolium chloride;    Nitrogen physisorption;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/87/1/012019/pdf
DOI  :  10.1088/1757-899X/87/1/012019

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A new type of hybrid material was prepared by grafting an ionic liquid monomer, 1-(p-vinylbenzyl)-3-methylimidazolium chloride, on the surface of the porous silica which was synthesized via sodium silicate hydrolysis. The as-synthesized products were characterized by scanning electron microscope, nitrogen physisorption experiment, thermogravimetric analysis and Fourier transform infrared spectra. A catalyst with Au was prepared using the hybrid material as carrier. The experimental results show that the catalyst exhibits a better catalytic effect of hydrogen peroxide on the degradation of methyl orange. The reason may be that the metal component of the catalyst facilitated the dissociation of hydrogen peroxide to produce abundant highly active free radicals which can rapidly ruin the structure of methyl orange molecules in water. Finally, a probable catalytic degradation mechanism based on diffusion was discussed.