CAJ | 학술논문

以聚乙烯亚胺(PEI)为原料,通过环氧氯丙烷(ECH)化学交联改性的方法制备了网络状交联聚乙烯亚胺(CPEI),然后在氮气氛围中,经一定条件炭化制得了含有丰富含氮功能基团的新型吸附材料(CCPEI)。通过氮吸附等温线分析了样品的孔结构,通过 FT-IR 表征比较 PEI、CPEI 以及 CCPEI 的官能团,并通过SEM观察CCPEI的表面形貌。结果表明, CCPEI保留了大量的胺基活性基团,并经过炭化形成一部分表面微孔结构。初步探索了 CCPEI 对不同金属离子的吸附性能,结果表明,CCPEI 对 Cu2+、Pd2+、Al3+、Ce3+、La3+均具有较大的吸附容量,分别达到63.776,83.007,20.7113,37.506和14.148 mg/g；采用静态法研究了 CCPEI 对 Cu2+的结合特性以及温度、pH 值等对吸附的影响。
이취을희아알(PEI)위원료,통과배양록병완(ECH)화학교련개성적방법제비료망락상교련취을희아알(CPEI),연후재담기분위중,경일정조건탄화제득료함유봉부함담공능기단적신형흡부재료(CCPEI)。통과담흡부등온선분석료양품적공결구,통과 FT-IR 표정비교 PEI、CPEI 이급 CCPEI 적관능단,병통과SEM관찰CCPEI적표면형모。결과표명, CCPEI보류료대량적알기활성기단,병경과탄화형성일부분표면미공결구。초보탐색료 CCPEI 대불동금속리자적흡부성능,결과표명,CCPEI 대 Cu2+、Pd2+、Al3+、Ce3+、La3+균구유교대적흡부용량,분별체도63.776,83.007,20.7113,37.506화14.148 mg/g；채용정태법연구료 CCPEI 대 Cu2+적결합특성이급온도、pH 치등대흡부적영향。
porous carbons with high percentage of nitrogen functional groups were synthesized by polyethylenei-mine with epichlorodydrin and carbonized in nitrogen atmosphere at certain conditions.Their pore structure, graphite crystalline size,and surface morphology were characterized by nitrogen adsorption isotherms at 77 K, FT-IR spectra analysis and seanning electron microscopy.It could be seen that CCPEI has a unitary nanopore structure and nitrogen-containing functional group was preserved in crosslinking process.The adsorption capac-ities for Cu2+,Pd2+,Al3+,Ce3+,La3+ of CCPEI were 63.776,83.007,20.713,37.506,14.148 mg/g due to its developed pore structure and nitrogen-containing chemical groups.Isothermal adsorption data of adsorption capacities for Cu2+ fits the Langmuir equation and the adsorption quantity are also influenced by temperature and pH .