贵金属
貴金屬
귀금속
PRECIOUS METALS
2015年
2期
1-8
,共8页
岳晓霞%张栋%杜瑞奎%张永奇%王靖雯%安富强
嶽曉霞%張棟%杜瑞奎%張永奇%王靖雯%安富彊
악효하%장동%두서규%장영기%왕정문%안부강
冶金物理化学%聚乙烯亚胺%印迹%金%识别%硅胶
冶金物理化學%聚乙烯亞胺%印跡%金%識彆%硅膠
야금물이화학%취을희아알%인적%금%식별%규효
physical chemistry in metallurgy%polyethyleneimine%imprinted%gold%identification%silicone
将功能高分子聚乙烯亚胺(polyethyleneimine,PEI)化学接枝在硅胶微粒表面,形成功能接枝材料PEI-g-SiO2;再以AuCl4-为模板离子,乙二醇二缩水甘油醚(EGDE)为交联剂,将接枝在硅胶表面的PEI大分子链进行交联,同时实施AuCl4-的印迹,制备了AuCl4-印迹材料IIP-PEI-g-SiO2。采用静态法考察了IIP-PEI-g-SiO2对AuCl4-的吸附特性。实验结果表明,IIP-PEI-g-SiO2对AuCl4-具有优良的吸附性能与较强的记忆识别能力。吸附容量可以达到23.59 mg/g,相对于Cu2+,印迹材料对AuCl4-的选择性系数为32.45。此外,IIP-PEI-g-SiO2还具有优良的重复使用性能。
將功能高分子聚乙烯亞胺(polyethyleneimine,PEI)化學接枝在硅膠微粒錶麵,形成功能接枝材料PEI-g-SiO2;再以AuCl4-為模闆離子,乙二醇二縮水甘油醚(EGDE)為交聯劑,將接枝在硅膠錶麵的PEI大分子鏈進行交聯,同時實施AuCl4-的印跡,製備瞭AuCl4-印跡材料IIP-PEI-g-SiO2。採用靜態法攷察瞭IIP-PEI-g-SiO2對AuCl4-的吸附特性。實驗結果錶明,IIP-PEI-g-SiO2對AuCl4-具有優良的吸附性能與較彊的記憶識彆能力。吸附容量可以達到23.59 mg/g,相對于Cu2+,印跡材料對AuCl4-的選擇性繫數為32.45。此外,IIP-PEI-g-SiO2還具有優良的重複使用性能。
장공능고분자취을희아알(polyethyleneimine,PEI)화학접지재규효미립표면,형성공능접지재료PEI-g-SiO2;재이AuCl4-위모판리자,을이순이축수감유미(EGDE)위교련제,장접지재규효표면적PEI대분자련진행교련,동시실시AuCl4-적인적,제비료AuCl4-인적재료IIP-PEI-g-SiO2。채용정태법고찰료IIP-PEI-g-SiO2대AuCl4-적흡부특성。실험결과표명,IIP-PEI-g-SiO2대AuCl4-구유우량적흡부성능여교강적기억식별능력。흡부용량가이체도23.59 mg/g,상대우Cu2+,인적재료대AuCl4-적선택성계수위32.45。차외,IIP-PEI-g-SiO2환구유우량적중복사용성능。
A functional graft material PEI-g-SiO2 was prepared via grafting functional polymer PEI (polyethyleneimine, PEI) onto the surface of silica gel particles. Then, PEI macromolecules grafted onto the surface of silica gel particles were crosslinked to produce ionic imprinted material IIP-PEI-g-SiO2by using AuCl4- as template ions and ethylene glycol diglycidyl ether (EGDE) as the crosslinking agent. The adsorption ability of IIP-PEI-g-SiO2 for AuCl4- was investigated through the static method. The experiment results showed that the ionic imprinted material IIP-PEI-g-SiO2displayed excellent adsorption performance and great ability of recognition memory for AuCl4-. The adsorption capacity could be up to 23.59 mg/g, and the relative selectivity coefficients relative to Cu2+ was 32.45. Furthermore, IIP-PEI-g-SiO2 also possessed an excellent reusability.