芳香族化合物参与构筑吸附材料制备及应用
发布时间：2018-10-07 20:09
【摘要】：7本论文采用芳香族聚合物成功构筑了对染料和重金属六价铬具有优异吸附性能的功能材料,并深入探讨了该材料对污染物的吸附机理。论文在探索了五元环芳香族聚合物对吸附材料的影响的基础上,进一步探究了六元环芳香族聚合物参与构筑的吸附材料,在结构和性能上的优越性,其详细的研究内容分为三个部分:以1-乙烯基咪唑和2-氯乙胺盐酸盐合成了芳香族聚离子液体(PIL),再与甘蔗渣(SCB)发生聚合,制备了SCB/PIL纳米材料,通过FTIR、SEM、TGA、XRD对材料的结构进行了分析。测试结果表明材料是表面粗糙,呈片状,具有较好的热稳定性。实验探讨了其对橙黄Ⅱ和六价铬的吸附性能,研究了溶液的初始pH、接触时间、吸附剂量、溶液浓度和共存离子对吸附容量的影响。通过吸附动力学和吸附等温线探讨了材料对橙黄Ⅱ和六价铬的吸附原理。结果表明,SCB/PIL对橙黄Ⅱ的吸附过程符合假二阶动力学方程和Freundlich等温吸附模型,而对六价铬的吸附过程符合假二阶动力学方程和Langmuir等温吸附模型。以二乙烯基苯和2-丙烯酰胺基-2-甲基丙磺酸为原料,同样通过自由游离基引发聚合,形成交联聚合物Poly(AMPS-co-DVB),同时调节合成过程中2-丙烯酰胺基-2-甲基丙磺酸与二乙烯基苯的比例,制备了一系列的Poly(AMPS-co-DVB)吸附剂。本文通过SEM、XRD、FTIR、TGA、BET对Poly(AMPS-co-DVB)进行结构分析,结果表明Poly(AMPS-co-DVB)是表面粗糙、无定形的、热稳定良好的多孔材料。吸附实验表明Poly(AMPS-co-DVB)对罗丹明B有优越的吸附性能。实验研究了溶液初始pH、接触时间、吸附剂量和吸附温度对吸附容量的影响。通过对吸附动力学、吸附等温线和吸附热力学的研究,探讨了Poly(AMPS-co-DVB)对罗丹明B染料废水的吸附机理。经计算表明,Poly(AMPS-co-DVB)对罗丹明B的吸附符合假二阶动力学方程和Langmuir等温吸附模型,其对罗丹明B的吸附过程是一个自发的、吸热的、熵增加的过程。以丙烯酸和二乙烯基苯为原料,通过自由游离基聚合合成了交联聚合物Poly(AA-co-DVB),同时调节合成过程中丙烯酸与二乙烯基苯的比例,制备了一系列的Poly(AA-co-DVB)吸附剂。通过SEM、FTIR、TGA对Poly(AA-co-DVB)的结构进行分析。测试表明Poly(AA-co-DVB)是表面粗糙、不规则的表面形貌,具有良好的热稳定性。研究了Poly(AA-co-DVB)对水溶液中的亚甲基蓝的吸附效果,在实验条件下的最优pH和接触时间,通过吸附动力学和吸附等温线的计算表明,Poly(AA-co-DVB)对亚甲基蓝的吸附符合假二阶动力学方程和Langmuir吸附等温模型。
[Abstract]:In this paper, aromatic polymers were used to successfully construct functional materials with excellent adsorption properties for dyes and hexavalent chromium, and the adsorption mechanism of pollutants was discussed. On the basis of exploring the influence of quaternary aromatic polymers on the adsorption materials, the advantages of the structures and properties of the adsorption materials constructed by the hexagonal ring aromatic polymers are further explored in this paper. The detailed research contents are divided into three parts: the aromatic polyionic liquid (PIL),) was synthesized from 1-vinylimidazole and 2-chloroethylamine hydrochloride, and then polymerized with bagasse (SCB). The SCB/PIL nanomaterials were prepared. The structure of the materials was analyzed by FTIR,SEM,TGA,XRD. The results show that the material has a rough surface, sheet shape and good thermal stability. The effects of the initial pH, contact time, the amount of adsorbent, the concentration of the solution and the coexisting ions on the adsorption capacity were investigated. The adsorption principle of orange 鈪，
本文编号：2255515
[Abstract]:In this paper, aromatic polymers were used to successfully construct functional materials with excellent adsorption properties for dyes and hexavalent chromium, and the adsorption mechanism of pollutants was discussed. On the basis of exploring the influence of quaternary aromatic polymers on the adsorption materials, the advantages of the structures and properties of the adsorption materials constructed by the hexagonal ring aromatic polymers are further explored in this paper. The detailed research contents are divided into three parts: the aromatic polyionic liquid (PIL),) was synthesized from 1-vinylimidazole and 2-chloroethylamine hydrochloride, and then polymerized with bagasse (SCB). The SCB/PIL nanomaterials were prepared. The structure of the materials was analyzed by FTIR,SEM,TGA,XRD. The results show that the material has a rough surface, sheet shape and good thermal stability. The effects of the initial pH, contact time, the amount of adsorbent, the concentration of the solution and the coexisting ions on the adsorption capacity were investigated. The adsorption principle of orange 鈪，
本文编号：2255515
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