Preparation of Fe3O4@SiO2@chitosan for the adsorption of malachite green dye

2018 International Conference of Green Buildings and Environmental Management

土木建筑工程;生态环境科学

Wang, Wen Jing^1 ; Cui, Qi Yao^1 ; Qin, Tang^1 ; Sun, Hong Hao^1

School of Bioengineering and Food, Key Laboratory of Fermentation Engineering (Ministry of Education), Key Laboratory of Industrial Microbiology in Hubei, National 111 Center for Cellular Regulation and Molecular Pharmaceutics Hubei, University of Technology, Wuhan

430068, China^1

关键词: Adsorption effect;    Higher efficiency;    Magnetic adsorbents;    Malachite green;    Removal efficiencies;    SiO2 Nanoparticles;    Ultraviolet spectrophotometry;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/186/3/012014/pdf
DOI  :  10.1088/1755-1315/186/3/012014

来源: IOP

【 摘 要 】

A novel magnetic adsorbent with chitosan-modified Fe3O4@SiO2 nanoparticles were prepared for the removal of malachite green in aqueous solution. Fe3O4@SiO2@chitosan was characterized by DLS and TEM. The difference among Fe3O4@SiO2@chitosan, Fe3O4@SiO2 and Fe3O4@SiO2-NH2 on the adsorption effect of malachite green was studied. The results were determined with ultraviolet spectrophotometry. Fe3O4@SiO2@chitosan showed higher efficiency on the adsorption of malachite green compared with Fe3O4@SiO2 and Fe3O4@SiO2-NH2. The removal efficiency of malachite green was 92% by Fe3O4@SiO2@chitosan, while that of Fe3O4@SiO2 and Fe3O4@SiO2-NH2 were 60% and 85%.