Abstract: Preparation of porous complex materials using small molecular surfactant as the stabilizer of high internal emulsion has potential harms to the environment. In this study, porous composites (Tween 85/SiO2-PAA) were prepared by in-situ polymerization after high internal phase monomer emulsion with an internal phase volume fraction of 75% (HIPE) was prepared under the help of acrylic acid and N, N- methyl double acrylic acid monomer solution as continuous phase, peanut oil as dispersed phase, Tween 85/SiO2 (mass ratio 1∶1) as composite stabilizer. Scanning electron microscopy (SEM) showed that porous composites appeared concave convex two-dimensional interpenetrating pore structure, infrared spectra (FTIR) showed that many active groups existed in the polymer molecular structure such as carboxyl, amino and silicon hydroxyl. The composites presented a good adsorption capacity for low concentration lead ions, and the removal rate was up to 97.62%. The adsorption process conformed to the first-order kinetic and Langmuir isothermal adsorption model. The maximum saturated adsorption capacity was 89.35 mg/g, and the adsorption mechanism was the chemical interaction between -COOH, -NH2, -Si-OH and lead ions.
梁宁, 陆小凤, 周街荣, 黄丽葵, 王军正. 高内相乳液原位聚合制备多孔复合材料吸附铅离子[J]. 材料导报, 2023, 37(15): 22040290-7.
LIANG Ning, LU Xiaofeng, ZHOU Jierong, HUANG Likui, WANG Junzheng. Preparation of Porous Composite Material by In-situ Polymerization of High Internal Phase Emulsion for Adsorption of Lead Ions. Materials Reports, 2023, 37(15): 22040290-7.
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2023, Vol. 37 
