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35 mg/L,pH 值＝7,反应时间为4 h,0．02 g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143．07 mg/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.
参考文献
| [1] | Niramol SA;Thiravetyan P;Nakbanpote W.Adsorption mechanism of synthetic reactive dye wastewater by chitosan[J].Journal of Colloid and Interface Science,20051(1):36-42. |
| [2] | 王昕;张春丽;任广军;宋恩军.碳纳米管吸附染料甲基橙的性能研究[J].当代化工,2008(4):375-377,381. |
| [3] | Zumriye Aksu.Biosorption of reactive dyes by dried activated sludge: equilibrium and kinetic modelling[J].Biochemical Engineering Journal,20011(1):79-84. |
| [4] | 张宇峰;滕洁;张雪英;王晓军;徐炎华.印染废水处理技术的研究进展[J].工业水处理,2003(4):23-27. |
| [5] | Aysegul Pala;Enis Tokat.Color removal from cotton textile industry wastewater in an activated sludge system with various additives[J].Water research: A journal of the international water association,200211(11):2920-2925. |
| [6] | Zhao, Z.-Q.;Chen, X.;Yang, Q.;Liu, J.-H.;Huang, X.-J..Selective adsorption toward toxic metal ions results in selective response: Electrochemical studies on a polypyrrole/reduced graphene oxide nanocomposite[J].Chemical communications,201216(16):2180-2182. |
| [7] | 刘月娥;庞桂林;甄卫军;侯晋朝;田小红;周涛.TiO2/膨润土催化剂降解工业废水研究[J].金属矿山,2009(11):157-161. |
| [8] | G.Sivalingam;K.Nagaveni;M.S.Hegde;Giridhar Madras.Photocatalytic degradation of various dyes by combustion synthesized nano anatase TiO_2[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20031(1):23-38. |
| [9] | 范山湖;孙振范;邬泉周;李玉光.偶氮染料吸附和光催化氧化动力学[J].物理化学学报,2003(1):25-29. |
| [10] | 丁文艳;李丹;汪信;陆路德;杨绪杰.聚电解质自组装膜对聚吡咯原位沉积的影响[J].功能材料,2002(4):437-439. |
| [11] | Li, J.;Feng, J.;Yan, W..Synthesis of polypyrrole-modified TiO_2 composite adsorbent and its adsorption performance on acid Red G[J].Journal of Applied Polymer Science,20135(5):3231-3239. |
| [12] | 李永舫.导电聚合物[J].化学进展,2002(03):207-211. |
| [13] | Peng Liu;Tingmei Wang.Adsorption properties of hyperbranched aliphatic polyester grafted attapulgite towards heavy metal ions[J].Journal of hazardous materials,20071(1):75-79. |
| [14] | Skaarup S.;Bay L.;Vidanapathirana K.;Thybo S.;Tofte P.;West K..Simultaneous anion and cation mobility in polypyrrole[J].Solid state ionics,20031/2(1/2):143-147. |
| [15] | Li YF.;He GF..Effect of preparation conditions on the two doping structures of polypyrrole[J].Synthetic Metals,19981(1):127-129. |
| [16] | 杨炳超;刘倩;霍杰;黄瑞华.质子化交联壳聚糖对甲基橙的吸附研究[J].功能材料,2013(3):376-379. |
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