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以埃洛石、海藻酸钠和丙烯酸为功能单体,合成了基于埃洛石的可降解水凝胶复合材料,并用红外、扫描电镜对产物进行了表征,研究了复合材料对铜离子的静态吸附性能。结果表明,埃洛石的含量为10%时,在溶液pH=5.5,铜离子浓度为0.02mol/L,温度为30℃的条件下,其对铜离子的最大吸附容量为263.3mg/g。复合材料对铜离子的吸附符合准二级吸附动力学方程和朗格缪尔吸附等温线方程,对吸附热力学的研究结果表明:该复合材料对铜离子的吸附为放热过程,且是自发行为。
Using halloysite, sodium alginate and acrylic acid as the functional monomer, a halloysite-based biodegradable hydrogel composite was synthesized. The product was characterized by infrared and scanning electron microscopy. The effects of composite materials on the static state of copper ion Adsorption performance. The results showed that when the content of halloysite was 10%, the maximum adsorption capacity of copper ion was 263.3mg / g under the condition of solution pH = 5.5, copper ion concentration 0.02mol / L and temperature 30 ℃. The results show that the adsorption of copper ions on the composite is exothermic and spontaneous. The results show that the adsorption of copper ions on the composite material is consistent with the quasi-second-order kinetic equation and the Langmuir isotherm equation.