摘要
采用原位聚合法合成了盐酸(HCl)与对甲苯磺酸(TSA)共掺杂的聚吡咯/凹凸棒石(PPy/ATP)复合材料。采用扫描电子显微镜(SEM)、傅里叶变换红外光谱(FT-IR)对复合材料的结构进行表征,发现聚吡咯微球包覆在凹凸棒石的外面,形成了粗糙的表面,其红外谱图与聚吡咯的基本一致,只是强度略有变化。考察了吸附时间、吸附剂用量、pH值和溶液初始浓度对复合材料吸附甲基橙的影响,结果表明,在45℃,溶液初始浓度为35mg/L,pH值=7,反应时间为4h,0.02g的复合材料对甲基橙的吸附效果最好;吸附过程符合准二级动力学方程和Langmuir吸附等温式,最大吸附量为143.07mg/g。
Doped with hydrochloric acid and p-toluenesulfonic acid PPy/ATP composites were prepar-ed by situ polymerization method.The structure of the composites was studied and characterized by Scanning e-lectron microscopy (SEM)and Fourier transform infrared (FT-IR).The results indicated that the surface of ATP was covered with PPy microsphere to form a rough surface and the spectrum of PPy/ATP composites is consistent with PPy except for the intensity of some peaks.The effect of adsorption time,adsorbent dosage,pH and initial concentration was investigated.The optimum conditions were found to be:an initial concentration of 35 mg/L,contact time of 4 h,pH and temperature of 7 and 45 ℃ respectively.The experimental data fited well with the pseudo-second-order kinetic model and Langmuir equation,and the maximum adsorption capacity reached up to 143.07 mg/g.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2016年第10期10198-10202,共5页
Journal of Functional Materials
基金
甘肃省青年科技基金计划资助项目(1208RJYA086)
关键词
聚吡咯
凹凸棒
甲基橙
吸附
polypyrrple
attapulgite
adsorption
methyl orange