核化学与放射化学Issue(3)：140-148,9.DOI:10.7538/hhx.2014.36.03.0140
新型铯选择性吸附剂的合成及性能
Fabrication of a Novel Selective Adsorbent for Cesium and Its Performance Research
游新锋 1张振涛1
作者信息
- 1. 中国原子能科学研究院 放射化学研究所，北京 102413
- 折叠
摘要
Abstract
A novel inorganic selective adsorbent for cesium,potassium nickel hexacyanofer-rate (KNiFC/Ni)based on the surface of nickel matrix,was synthesized in site by a simple water chemical method.Its surface chemical composition is K1.4 Ni1.3 Fe(CN)6 determined by X-ray photoelectron spectrometry (XPS),and the crystalline structure of KNiFC is face-centered lattice with a=0.9 9 6 0 nm determined by the X-ray diffractometry (XRD),and its thick is about 40-80 nm.The adsorbent is stable in aqueous media.It has high adsorption capacity,rapid adsorption kinetics and high selectivity for Cs+.The distribution coefficient (Kd)for 137 Cs is up to 105 mL/g,and even in the 1.0 mol/L NaNO3 solution,it is still over 103 mL/g.It is found that the adsorbent for 137 Cs is typical ion-exchange mechanism. Because NH+4 ion radius is close to Cs+,NH+4 has the strongest competition as compared to Na+,Sr2+,and H+.The adsorbent is promising for 137 Cs separation and treatment of 137 Cs liquid waste .关键词
亚铁氰化镍钾/137 Cs/离子交换/选择性吸附Key words
potassium nickel hexacyanoferrate/137 Cs/ion-exchange/selective adsorption分类
能源科技引用本文复制引用
游新锋,张振涛..新型铯选择性吸附剂的合成及性能[J].核化学与放射化学,2014,(3):140-148,9.
