Improving the selectivity of magnetic graphene oxide through amino modification
Improving the selectivity of magnetic graphene oxide through amino modification
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通过氨基修饰提高磁性氧化石墨烯的选择性
DOI：
10.2166/wst.2017.354
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发表时间：
2017
影响因子：
2.7
通讯作者：
Lei Li
中科院分区：
文献类型：
--
作者：
Jiayong Dai;Hongyan Zhao;Yuting Ye;Li Wang;Shuyuan Cao;Xiaojian Su;Xuefeng Hu;Lei Li
制造用于环境目的的高效材料是当今的首要任务和备受关注的主题。本研究的目的是采用氨基修饰的方法来提高磁性氧化石墨烯（MGO）对Cu（II）离子的选择性去除能力，并以Cd（II）作为比较，探讨其在单一和二元体系中的表现。接枝氨基后，最终材料表现出对Cu(II)和Cd(II)的增强的容量，并且可以观察到更明显的选择性吸附过程。在我们的实验条件下，氨基修饰的 MGO 对 Cu(II) 的最大平衡吸附量为 578.1 mg g1，对 Cd(II) 的最大平衡吸附量为 184.7 mg g1，而 MGO 对 Cu(II) 和 Cd(II) 的最大平衡吸附量分别为 319.1 mg g1 和 161.2 mg g1。 增强。这可能为更好地理解潜在机制铺平道路，并为合成新吸附剂提供灵感。
Fabricating efficient materials for environmental purposes is a priority and the subject of much.attention nowadays. The objectives of this study are to adopt an amino modification approach to.improve the selective removal capacity of magnetic graphene oxide (MGO) for Cu(II) ions, and explore.how it performs in single and binary systems by taking Cd(II) as a comparison. After grafting the.amino groups, the final material exhibited promoted capacities for Cu(II) and Cd(II), and a more.apparent selective adsorption process can be observed. The maximum equilibrium adsorbances of.amino modified MGO were 578.1 mg g1 for Cu(II) and 184.7 mg g1 for Cd(II) under our experimental.conditions, compared with 319.1 mg g1 and 161.2 mg g1 of MGO for Cu(II) and Cd(II), respectively..Characterization results and experiment data confirmed that the introduction of N species.contributed to the enhancement. This may pave the way for better understanding of the underlying.mechanism, and provide inspiration for synthesizing new adsorbents.