摘要
采用氧化法在常温下合成聚苯胺/四氧化三铁/氧化石墨烯核壳纳米复合材料,并作为吸附剂吸附Cu2+离子。用XRD和FT-IR进行表征。研究了不同吸附时间、p H和循环使用次数等对复合物吸附容量的影响,在25℃、溶液p H为4.8时最大吸附能力为43.2 mg/g。该复合材料对Cu2+离子吸附过程符合准二级动力学模型,表明吸附过程涉及吸附物与污染物之间的物理和化学相互作用。
PANi/Fe3O4/GO nanocomposites were prepared by chemical synthesis at ambient temperature, which was employed as adsorbent for Cu^2＋ in aqueous solutions. XRD and FTIR were used to characterize the PANi/GO/Fe3O4 nanocomposite. The effect of pH value, adsorption time and cycle numbers on the adsorption capacity were also investigated, from which the adsorption carried out at 25 ℃ with pH value of 4.8 presented the largest capacity of 43.2 mg/g. The adsorption isotherms of the composites are found to follow the pseudo-second-order kinetic model, suggestive of both physical and chemical interactions between the polutants and adsorbent.
出处
《广东化工》
CAS
2015年第10期19-21,26,共4页
Guangdong Chemical Industry
