Gamma射线辐照三聚磷酸二氢铝的结构效应及铜离子吸附  

Structure Effect and Copper Ion Adsorption of Aluminum Dihydrogen Tripolyphosphate Irradiated by Gamma-Ray

作　　者：张海涛[1] 刘岚[1] 宋伟强[2] 杨明成[3] 赵志伟[2] 

机构地区：[1]漯河医学高等专科学校基础部,河南漯河462000 [2]河南工业大学材料学院,郑州450001 [3]河南省科学院同位素研究所有限责任公司,郑州450052

出　　处：《河南科学》2016年第5期667-671,共5页Henan Science

基　　金：河南省重点科技攻关计划项目(152102210069);郑州市科技创新团队项目(131PCXTD615)

摘　　要：采用FTIR、TGA、DSC、XRD等技术研究了在0~150 kGy范围内gamma射线辐照对三聚磷酸二氢铝(ADHTP)化学结构、晶体结构和热性能的影响,以及吸收剂量对ADHTP去除水溶液中Cu^(2+)去除率的影响.研究表明,尽管gamma射线辐照对ADHTP的化学结构和热性能影响不明显,不会使ADHTP形成新的结晶相,但会使ADHTP的晶胞参数和片层结构的层间距增大.进一步研究表明,辐照后ADHTP对水溶液中Cu^(2+)的吸附能力增强,并随着吸收剂量的增加而提高,原因可能在于辐照后ADHTP的层间距增大,有利于Cu^(2+)向层间扩散,提高对Cu^(2+)的去除率.The effect of gamma rays on chemical structure,crystal structure,thermal properties and Cu^2＋ ionexchange capacity of aluminium dihydrogen tripolyphosphate（ADHTP）in the dose range of 0 to 150 kGy wasexplored with the aid of FTIR,XRD,TGA,DSC and ion-selective electrode analysis. Although the FTIR spectraand the thermal curves showed that the effect on functional groups was not obvious,and there was not new crystalphase forming in the irradiated samples,the increase in the crystal lattice parameters was observed in the XRDspectra compared to the non-irradiated sample,and the extent of the lattice-parameter increase monotonicallyincreased with the absorbed dose increasing from 20 kGy to 150 kGy. And the lattice-parameter increase wasattributed to the decomposition of water and the simultaneous occurrence of lattice damage when ADHTP wasexposed to gamma rays. Of particular significance was the displayed increase in Cu^2＋ ion exchange capacity ofADHTP in the aqueous solutions,which was attributed to the increase of the interlamellar spacing of ADHTP.

关 键 词：三聚磷酸二氢铝 gamma射线 辐射效应 

分 类 号：TL99[核科学技术—核技术及应用] TQ628[化学工程—精细化工]