Synthesis and application of sulfonated graphene oxide for the adsorption of uranium(VI) from aqueous solutions
Synthesis and application of sulfonated graphene oxide for the adsorption of uranium(VI) from aqueous solutions
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DOI：
10.1007/s10967-016-4813-6
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发表时间：
2016-05
影响因子：
1.6
通讯作者：
Zhi-Bin Zhang;Yanju Qiu;Ying Dai;Pan-feng Wang;Bao Gao;Zhimin Dong;Xiaohong Cao;Yunhai Liu
中科院分区：
文献类型：
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作者：
Zhi-Bin Zhang;Yanju Qiu;Ying Dai;Pan-feng Wang;Bao Gao;Zhimin Dong;Xiaohong Cao;Yunhai Liu
本文报道了以氧化石墨烯（GO）为原料，通过气固转移反应制备磺化氧化石墨烯（GOS）的一锅法。对合成的GOS进行了表征，并研究了其作为吸附剂从水溶液中吸附U（VI）的性能。结果表明，U（VI）的吸附强烈地依赖于pH值，而与离子强度无关。吸附过程遵循准二级动力学，吸附等温线符合Langmuir模型，最大吸附容量为309.09 mg g−1。热力学参数表明吸附反应是一个吸热的自发过程。
In this article, we report a facile one-pot method to prepare sulfonated graphene oxide (GOS) via vapor–solid transfer reaction of graphene oxide (GO). The synthesized GOS were characterized and investigated as an adsorbent for the adsorption of U(VI) from aqueous solutions. The results indicated that the adsorption of U(VI) was strongly dependent on pH and independent of ionic strength. The adsorption process followed the pseudo-second-order kinetics and the adsorption isotherm agreed well with the Langmuir model, having a maximum adsorption capacity of 309.09 mg g−1. Thermodynamic parameters indicated that the adsorption reaction was an endothermic and spontaneous process.