摘要
研究了具有SOD拓扑结构的ZIF-67和ZIF-8两种类沸石咪唑酯骨架结构材料(ZIFs)对酸性红151(AR151)染料废水的吸附脱色作用,对影响实验因素的初始浓度和接触时间进行了探讨。结果表明:ZIF-67和ZIF-8吸附剂对AR151的吸附较好地符合Langmuir吸附等温线,并且两者对AR151的最大吸附容量分别为72.44mg/g和57.80mg/g。吸附过程的机理可能是由于不饱和骨架金属Co(Ⅱ)和Zn(Ⅱ)与染料分子中-SO3-之间的静电引力所造成。
Zeolite imidazolate fr ameworks（ZIFs）including ZIF-67 and ZIF-8 were utilized as adsorbents for adsorp tion and discoloration of acid red 151（AR151） from aqueous solutions,and the in fluencing factors including initial concentration and contact time were investigated.The r esults show that the adsorption results corresponded well with the Langmuir isotherm,and the maximum adsorption capacity of ZIF-67 and ZIF-8 was 72.44 mg/g and 57.80 mg/g,respectively.The adsorption mechanism was proposed as the electrostat ic interactions between low-coordinated metal cations Co（Ⅱ） and Zn（Ⅱ） of ZIF s and negatively charged groups SO3-of AR151.
出处
《太原理工大学学报》
CAS
北大核心
2012年第3期305-308,318,共5页
Journal of Taiyuan University of Technology
基金
国家自然科学基金资助项目(51172153)
