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首页> 外文期刊>Environmental Science & Technology >Toward Tailored Functional Design of Multi-Walled Carbon Nanotubes (MWNTs): Electrochemical and Antimicrobial Activity Enhancement via Oxidation and Selective Reduction
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Toward Tailored Functional Design of Multi-Walled Carbon Nanotubes (MWNTs): Electrochemical and Antimicrobial Activity Enhancement via Oxidation and Selective Reduction

机译：走向量身定制的多壁碳纳米管（MWNTs）功能设计：通过氧化和选择性还原增强电化学和抗菌活性

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摘要

Multiwalled carbon nanotubes (MWNTs) are utilized in a number of sectors as a result of their favorable electronic properties. In addition, MYVNT antimicrobial properties can be exploited or considered a potential liability depending on their intended application and handling. The ability to tailor electrochemical and antimicrobial properties using economical and conventional treatment processes introduces the potential to significantly enhance product performance. Oxygen functional groups are known to influence several MWNT properties, including redox activity. Here, MWNTs were functionalized with oxygen groups using standard acid treatments followed by selective reduction via annealing. Chemical derivatization coupled to X-ray photoelectron spectroscopy was utilized to quantify specific surface oxygen group concentration after variable treatment conditions, which were then correlated to observed trends in electrochemical and antimicrobial activities. These activities were evaluated as the potential for MWNTs to participate in the oxygen reduction reaction and to have the ability to promote the oxidation of glutathione. The compiled results strongly suggest that the reduction of surface carboxyl groups and the redox activity of carbonyl groups promote enhanced MWNT reactivity and elucidate the opportunity to design functional MWNTs for enhanced performance in their intended electrochemical or antimicrobial application.
机译：多壁碳纳米管（MWNTs）由于其良好的电子性能而在许多领域得到利用。另外，取决于其预期的应用和处理方式，可以利用MYVNT抗菌特性或将其视为潜在的责任。使用经济的和常规的处理工艺来定制电化学和抗菌性能的能力带来了显着提高产品性能的潜力。已知氧官能团会影响多种MWNT性能，包括氧化还原活性。在这里，MWNTs使用标准酸处理方法被氧官能团官能化，然后通过退火选择性还原。化学衍生化结合X射线光电子能谱用于量化可变处理条件后特定表面氧基团的浓度，然后将其与观察到的电化学和抗菌活性趋势相关联。这些活性被评估为MWNTs参与氧还原反应并具有促进谷胱甘肽氧化的能力。汇编的结果有力地表明，表面羧基的减少和羰基的氧化还原活性促进了MWNT反应性的提高，并阐明了设计功能性MWNT的机会，以增强其预期的电化学或抗菌应用性能。

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  • 来源
    《Environmental Science & Technology》 |2014年第10期|5938-5945|共8页
  • 作者

    Leanne M.Gilbertson; David G. Goodwin Jr.; Andre D. Taylor; Lisa Pfefferle; Julie B. Zimmerman;

  • 作者单位

    Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States;

    Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States;

    Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States;

    Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States;

    Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States,School of Forestry and Environmental Studies, Yale University, New Haven, Connecticut 06520, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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