坡缕石/多羟基树状高分子复合材料的制备及性能
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摘要
以Na BH4还原水杨醛席夫碱修饰坡缕石为核,采用发散法通过与三聚氯氰、4-氨甲基哌啶、水杨醛、Na BH4还原的重复反应制备了1.0~2.0 G多羟基树状高分子/坡缕石复合材料,利用红外光谱、元素分析、热重对复合材料结构进行了表征,扫描电子显微镜测定了复合材料的外部形貌。吸附实验表明:该复合材料对废水中有机酚、重金属离子的吸附能力优于坡缕石原土,10 mg第二代树状高分子/坡缕石在293 K,对初始质量浓度是50mg/L的对硝基苯酚、对苯二酚、Pb(Ⅱ)的吸附量分别是35.3、34.02、44.8 mg/g,吸附动力学拟合结果符合拟二级动力学方程。
Palygorskite / polyhydroxy dendrimer polymer composite material was prepared by divergent method using cyanuric chloride,4-( aminomethyl) piperidine, salicylaldehyde and reduced salicylaldehyde Schiff base modified palygorskite with Na BH4 as raw materials. The structures of the composite materials were characterized by means of FTIR,TG and elemental analysis. The morphology of the materials was measured by SEM. The adsorption capacity of the composite material for organic phenol or heavy metal ions was superior to that of palygorskite in aqueous solution. The results indicate that the maximum adsorption capacity of the second generation dendrimers polymer / palygorskite( PGS-G2) for p-nitrophenol,hydroquinone and Pb( Ⅱ) was 35. 3,34. 02 and 44. 8 mg /g at 293 K and the amount of the adsorbent was 10 mg when the initial concentration was 50 mg / L. The adsorption kinetics data indicate that the adsorption fitted well with the pseudo-second-order kinetic model.
Palygorskite / polyhydroxy dendrimer polymer composite material was prepared by divergent method using cyanuric chloride,4-( aminomethyl) piperidine, salicylaldehyde and reduced salicylaldehyde Schiff base modified palygorskite with Na BH4 as raw materials. The structures of the composite materials were characterized by means of FTIR,TG and elemental analysis. The morphology of the materials was measured by SEM. The adsorption capacity of the composite material for organic phenol or heavy metal ions was superior to that of palygorskite in aqueous solution. The results indicate that the maximum adsorption capacity of the second generation dendrimers polymer / palygorskite( PGS-G2) for p-nitrophenol,hydroquinone and Pb( Ⅱ) was 35. 3,34. 02 and 44. 8 mg /g at 293 K and the amount of the adsorbent was 10 mg when the initial concentration was 50 mg / L. The adsorption kinetics data indicate that the adsorption fitted well with the pseudo-second-order kinetic model.
引文
[1]Potgieter J H,Potgieter-Vermaak S,Kalibantonga P D.Heavy metals removal from solution by palygorskite clay[J].Minerals Engineering,2006,19:463-470.
[2]Chang Y,Lv X Q,Zha F,et al.Sorption of p-nitrophenol by anioncation modified palygorskite[J].Journal of Hazardous Materials,2009,168:826-831.
[3]Chen H,Zhao Y G,Wang A Q.Removal of Cu(Ⅱ)from aqueous solution by adsorption onto acid-activated palygorskite[J].Journal of Hazardous Materials,2007,149:346-354.
[4]Frost R L,Xi Y,He H.Synthesis,characterization of palygorskite supported zero-valent iron and its application for methylene blue adsorption[J].Journal Colloid Interface Science,2010,341:153-161.
[5]Chang Y,Liu H W,Zha F,et al.Adsorption of Pb(Ⅱ)by Nmethylimidazole modified palygorskite,Chemical Engineer Journal[J].2011,167(1):183-189.
[6]庞田田.碳纳米管/树状高分子导电功能膜的微相结构调控研究[D].合肥:安徽大学,2013.
[7]李翠林,牛腾,师海雄,等.聚酰胺-胺树状分子锡配合物催化性能[J].精细化工,2013,30(6):618-623.
[8]宁春花,李仁,丁杨.含聚氧乙烯链端树枝状聚(胺-酯)的合成及性能[J].精细化工,2014,31(1):11-16.
[9]章昌华,涂伟萍,孟交交,等.苯甲醛修饰的聚酰胺胺树状大分子的合成与荧光性能研究[J].精细化工,2011,28(3):222-226.
[10]Yuan Y,Zhang G H,Li Y,et al.Poly(amidoamine)modified grapheme oxide as an efficient adsorbent for heavy metal ions[J].Polymer Chemistry,2013,4(6):2164-2167.
[11]Yoo S,Lunn J D,Gonzalez S,et al.Engineering nanospaces:OMS/dendrimer hybrids possessing controllable chemistry and porosity[J].Chemistry of Material,2006,18:2935-2942.
[12]Margandan B,Sang D P,Wang S C,et al.Development of TREN dendrimers over mesoporous SBA-15 for CO2adsorption[J].Applied Surface Science,2010,256:6660-6666.
[13]张波,王晶,刘艳霞,等.不同代数PAMAM树状高分子材料的热重分析[J].有色矿业,2005,21(7):64-66.
[2]Chang Y,Lv X Q,Zha F,et al.Sorption of p-nitrophenol by anioncation modified palygorskite[J].Journal of Hazardous Materials,2009,168:826-831.
[3]Chen H,Zhao Y G,Wang A Q.Removal of Cu(Ⅱ)from aqueous solution by adsorption onto acid-activated palygorskite[J].Journal of Hazardous Materials,2007,149:346-354.
[4]Frost R L,Xi Y,He H.Synthesis,characterization of palygorskite supported zero-valent iron and its application for methylene blue adsorption[J].Journal Colloid Interface Science,2010,341:153-161.
[5]Chang Y,Liu H W,Zha F,et al.Adsorption of Pb(Ⅱ)by Nmethylimidazole modified palygorskite,Chemical Engineer Journal[J].2011,167(1):183-189.
[6]庞田田.碳纳米管/树状高分子导电功能膜的微相结构调控研究[D].合肥:安徽大学,2013.
[7]李翠林,牛腾,师海雄,等.聚酰胺-胺树状分子锡配合物催化性能[J].精细化工,2013,30(6):618-623.
[8]宁春花,李仁,丁杨.含聚氧乙烯链端树枝状聚(胺-酯)的合成及性能[J].精细化工,2014,31(1):11-16.
[9]章昌华,涂伟萍,孟交交,等.苯甲醛修饰的聚酰胺胺树状大分子的合成与荧光性能研究[J].精细化工,2011,28(3):222-226.
[10]Yuan Y,Zhang G H,Li Y,et al.Poly(amidoamine)modified grapheme oxide as an efficient adsorbent for heavy metal ions[J].Polymer Chemistry,2013,4(6):2164-2167.
[11]Yoo S,Lunn J D,Gonzalez S,et al.Engineering nanospaces:OMS/dendrimer hybrids possessing controllable chemistry and porosity[J].Chemistry of Material,2006,18:2935-2942.
[12]Margandan B,Sang D P,Wang S C,et al.Development of TREN dendrimers over mesoporous SBA-15 for CO2adsorption[J].Applied Surface Science,2010,256:6660-6666.
[13]张波,王晶,刘艳霞,等.不同代数PAMAM树状高分子材料的热重分析[J].有色矿业,2005,21(7):64-66.