Carbon nanotube-based extraction and electrochemical detection of heavy metals
Carbon nanotube-based extraction and electrochemical detection of heavy metals
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DOI：
10.1007/s11164-011-0307-x
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发表时间：
2011-04
影响因子：
3.3
通讯作者：
M. Musameh;M. Hickey;I. Kyratzis
中科院分区：
文献类型：
--
作者：
M. Musameh;M. Hickey;I. Kyratzis
本文综述了碳纳米管萃取和电化学检测水中重金属的最新发展趋势和面临的挑战。碳纳米管（CNT）具有优于常规材料（例如石墨和活性炭）的电学、机械、化学和结构性质的上级性质。基于CNT的程序也比传统的技术和方法更有效，例如液-液萃取、原子吸收光谱、火焰光度法和电感耦合等离子体，因为它们可以实现快速、灵敏、简单和低成本的现场检测。不同形式的CNT，包括生长的、氧化的和官能化的CNT，可以很好地适合于金属吸附。测量过程依赖于在合理的接触时间后，通过施加电势或在开路条件下，将金属吸附在CNT表面上，并随后进行定量。不同类型的基于CNT的电极，包括复合材料、糊剂和无粘合剂，可以被制造并用于金属检测。详细讨论了碳纳米管及其新特性在重金属吸附和检测中的应用。
In this mini review, recent trends and challenges in developing carbon nanotube-based extraction and electrochemical detection of heavy metals in water are reviewed. Carbon nanotubes (CNT) have electrical, mechanical, chemical, and structural properties superior to those of conventional materials, for example graphite and activated carbon. CNT-based procedures are also more efficient than traditional techniques and methods, for example liquid–liquid extraction, atomic-absorption spectroscopy, flame photometry, and inductively coupled plasma, because they can enable rapid, sensitive, simple, and low-cost on-site detection. Different forms of CNT, including as-grown, oxidised, and functionalised CNT, can be well suited to metal adsorption. The measurement procedure relies on adsorbing the metal on the CNT surface after reasonable contact time, either by applying an electrical potential or under open-circuit conditions, and subsequent quantification. Different types of CNT-based electrode, including composite, paste, and binder-free, can be fabricated and used for metal detection. Application of CNT and their novel properties to the adsorption and detection of heavy metals is discussed in detail.