Abstract

Nanocomposite materials use matrix resin and rubber as continuous phases, and modifier semiconductor nanometers and nanometals as dispersed phases. The modifier is evenly dispersed into the body material according to a certain preparation method. Compound mechanism. This article aims to study the effect of silane coupling agent on the structure and properties of polymethyl methacrylate silica nanocomposites. This article mainly uses nano-silica as the basic material and uses organic functional molecules for modification to prepare three new materials that can selectively adsorb gold ions, which provides new ideas for the concentration and recovery of gold ions. This paper mainly uses the isotherm adsorption algorithm to calculate the relationship between the concentration of different adsorbate and adsorption capacity at a specific temperature for nanocomposites. The experimental results in this paper show that polymethyl methacrylate silica nanocomposites can selectively adsorb gold ions, the maximum adsorption capacity is 127.3 mg/g, the adsorption equilibrium time is 20 min, and the optimal adsorption pH is 3.

摘要

纳米复合材料以基体树脂和橡胶为连续相，改性剂半导体纳米和纳米金属为分散相。改性剂按一定的制备方法均匀地分散在主体材料中。复合机制。本文旨在研究硅烷偶联剂对聚甲基丙烯酸甲酯二氧化硅纳米复合材料结构和性能的影响。本文主要以纳米二氧化硅为基础材料，利用有机功能分子进行改性，制备了三种可选择性吸附金离子的新材料，为金离子的浓缩和回收提供了新思路。本文主要利用等温线吸附算法计算纳米复合材料在特定温度下不同吸附物的浓度与吸附容量的关系。本文实验结果表明，聚甲基丙烯酸甲酯二氧化硅纳米复合材料可以选择性吸附金离子，最大吸附量为127.3 mg/g，吸附平衡时间为20 min，最佳吸附pH为3。