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将对苯乙烯磺酸钠(SSS)聚合接枝到表面炭化的CD301树脂表面,成功制备出一种新型吸附材料PSSS-g-CD301。研究了影响表面引发接枝聚合的主要因素,并采用静态法考察了PSSS-g-CD301对Fe(III)的吸附行为。结果表明,在接枝过程中,适宜的接枝时间是10h,适宜的引发剂用量为单体质量的1%,适宜的温度为35℃,适宜的单体质量分数为10%。PSSS-g-CD301对Fe(III)的吸附容量可以达到0.28mmol/g(p H=2,温度288K);准二级动力学方程可以更好地描述吸附动力学规律;吸附行为符合Langmuir与Freundlich吸附模型;热力学参数?H、?G、?S的计算结果表明,该吸附过程为自发的放热过程。
A novel sorbent material PSSS-g-CD301 was successfully prepared by grafting SSS on the surface carbonized CD301 resin. The main factors affecting the surface-initiated graft polymerization were studied. The adsorption behavior of Fe (III) by PSSS-g-CD301 was investigated by static method. The results showed that the appropriate grafting time was 10h, the suitable initiator was 1% of the monomer, the suitable temperature was 35 ℃ and the suitable monomer content was 10%. The adsorption capacity of PSSS-g-CD301 to Fe (III) can reach 0.28mmol / g (p H = 2, temperature 288K). Quasi-second order kinetic equation can better describe the adsorption kinetics. The adsorption behavior conforms to Langmuir and Freundlich adsorption model. The calculated thermodynamic parameters H, G, and S show that the adsorption process is a spontaneous exothermic process.