Iron and 1,3,5-Benzenetricarboxylic Metal–Organic Coordination Polymers Prepared by Solvothermal Method and Their Application in Efficient As(V) Removal from Aqueous Solutions
Iron and 1,3,5-Benzenetricarboxylic Metal–Organic Coordination Polymers Prepared by Solvothermal Method and Their Application in Efficient As(V) Removal from Aqueous Solutions
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DOI：
10.1021/jp212514a
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发表时间：
2012-04
影响因子：
3.7
通讯作者：
Bangjing Zhu;Xin‐Yao Yu;Y. Jia;Fumin Peng;Bai Sun;Meiyun Zhang;Tao Luo;Jinhuai Liu;Xingjiu Huang-Xi
中科院分区：
文献类型：
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作者：
Bangjing Zhu;Xin‐Yao Yu;Y. Jia;Fumin Peng;Bai Sun;Meiyun Zhang;Tao Luo;Jinhuai Liu;Xingjiu Huang-Xi
采用溶剂热法合成了铁和1，3，5-苯三甲酸（Fe-BTC）金属有机配位聚合物。所合成的Fe-BTC聚合物具有凝胶行为，其在普通有机溶剂或水中是稳定的。测试了Fe-BTC聚合物作为从水中去除砷的吸附剂。研究了Fe-BTC聚合物吸附水溶液中砷的动力学和热力学。pH值对吸附的影响也进行了研究。动力学研究表明，动力学数据符合准二级动力学模型。热力学分析表明吸附是自发的。吸附等温线符合Langmuir方程。Fe-BTC聚合物显示出相对高的砷吸附容量，是尺寸为50 nm的氧化铁纳米颗粒的6倍以上，是商业氧化铁粉末的36倍。因此，所合成的Fe-BTC聚合物具有相对较高的热稳定性。
Iron and 1,3,5-benzenetricarboxylic (Fe–BTC) metal–organic coordination polymers are synthesized via a simple solvothermal method. The as-synthesized Fe–BTC polymers exhibit gel behavior, which is stable in common organic solvents or in water. The Fe–BTC polymer as an adsorbent for arsenic removal from water is tested. The kinetics and thermodynamics of arsenic adsorption by the Fe–BTC polymer in aqueous solution are investigated comprehensively. The effect of pH on the adsorption is also investigated. Kinetic studies show that the kinetic data are well described by the pseudo-second-order kinetic model. The thermodynamic analysis indicates that the adsorption is spontaneous. The adsorption isotherms can be well described with the Langmuir equation. The Fe–BTC polymers show relatively high arsenic adsorption capacity, more than 6 times that of iron oxide nanoparticles with a size of 50 nm and 36 times that of commercial iron oxide powders. Hence, the as-synthesized Fe–BTC polymers possess relatively high ...