用于从羧基化碳纳米管中去除氧化碎片的微波诱导反应性碱洗
Microwave Induced Reactive Base Wash for the Removal of Oxidation Debris from Carboxylated Carbon Nanotubes.
作者信息
Wu Zheqiong, Mitra Somenath
机构信息
Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, New Jersey 07102, USA.
出版信息
Carbon N Y. 2015 Jul 1;88:233-238. doi: 10.1016/j.carbon.2015.03.005.
Removal of oxidation debris for generating high purity functionalized carbon nanotubes (CNTs) has been a challenge, where base washing has been found to be an effective purification treatment. In this paper we report microwave induced reactive base wash (MRW) as a fast, green alternate to conventional filtrate washing. Carboxylated CNTs of three different dimensions were subjected to MRW and the results were compared to conventional base-wash. The results showed that MRW was an effective method for the removal of oxidation debris which reduced the reaction time from 4 hours to 20 min and alkali consumption by 75%. The CNTs from MRW were similar to those from conventional base wash in terms of dimensions, elemental composition, BET surface area and colloidal stability in aqueous media.
去除氧化碎片以生成高纯度功能化碳纳米管（CNT）一直是一项挑战，其中碱洗已被证明是一种有效的纯化处理方法。在本文中，我们报告了微波诱导反应性碱洗（MRW），它是一种快速、绿色的传统滤液洗涤替代方法。对三种不同尺寸的羧基化碳纳米管进行了MRW处理，并将结果与传统碱洗进行了比较。结果表明，MRW是一种去除氧化碎片的有效方法，它将反应时间从4小时缩短至20分钟，并将碱消耗量降低了75%。在尺寸、元素组成、BET表面积和在水性介质中的胶体稳定性方面，MRW处理后的碳纳米管与传统碱洗处理后的碳纳米管相似。
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