Iron and 1,3,5-Benzenetricarboxylic Metal鈥揙rganic Coordination Polymers Prepared by Solvothermal Method and Their Application in Efficient As(V) Removal from Aqueous Solutions

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• 作者：Bang-Jing Zhu ; Xin-Yao Yu ; Yong Jia ; Fu-Min Peng ; Bai Sun ; Mei-Yun Zhang ; Tao Luo ; Jin-Huai Liu ; Xing-Jiu Huang
• 刊名：The Journal of Physical Chemistry C
• 出版年：2012
• 出版时间：April 19, 2012
• 年：2012
• 卷：116
• 期：15
• 页码：8601-8607
• 全文大小：452K
• 年卷期：v.116,no.15(April 19, 2012)
• ISSN：1932-7455

文摘

Iron and 1,3,5-benzenetricarboxylic (Fe鈥揃TC) metal鈥搊rganic coordination polymers are synthesized via a simple solvothermal method. The as-synthesized Fe鈥揃TC polymers exhibit gel behavior, which is stable in common organic solvents or in water. The Fe鈥揃TC polymer as an adsorbent for arsenic removal from water is tested. The kinetics and thermodynamics of arsenic adsorption by the Fe鈥揃TC 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鈥揃TC 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鈥揃TC polymers possess relatively high stability and better adsorption characteristic than nanomaterials simultaneously. It also can be considered as a new method to conquer the dilemma between the excellent properties from nanoscale effect and the aggregation of small size particles in the adsorption application of nanoparticle materials.