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首页> 外文期刊>Environmental Science & Technology >Response to Comment on 'Manipulating the Size and Dispersibility of Zerovalent Iron Nanoparticles by Use of Carboxymethyl Cellulose Stabilizers'
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Response to Comment on 'Manipulating the Size and Dispersibility of Zerovalent Iron Nanoparticles by Use of Carboxymethyl Cellulose Stabilizers'

机译：对“使用羧甲基纤维素稳定剂控制零价铁纳米颗粒的尺寸和分散性”评论的回应

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摘要

We appreciate the comments by Wang and Choi (1) on the subject article (2). The objective of our study was to demonstrate a new strategy to control the size of zerovalent iron (ZVI) nanoparticles using carboxymethyl cellulose (CMC) as a stabilizer. Prior to our response, readers are cautioned that ZVI nanoparticles are highly labile both chemically and physically. Consequently, the properties of ZVI nanoparticles are highly dynamic in nature and are a function of synthesizing chemistry and particle aging. Unfortunately, this dynamic feature is often ignored in the open literature. As a result, the size of ZVI nanoparticles reported in the literature spans from a few to hundreds of nanometers, and the reactivity differs by orders of magnitude. Further, readers are cautioned that stabilized ZVI nanoparticles, as presented in our paper, are present as discrete particles in aqueous suspension, while nonstabilized ZVI "nanoparticles" are present as agglomerates, which can be orders of magnitude greater than the nanoscale. Yet, these aggregates of ZVI particles have been often referred to as nanoparticles in the literature.
机译：我们感谢Wang和Choi（1）对主题文章（2）的评论。我们研究的目的是演示一种使用羧甲基纤维素（CMC）作为稳定剂来控制零价铁（ZVI）纳米粒子尺寸的新策略。在做出回应之前，请读者注意，ZVI纳米粒子在化学和物理上都非常不稳定。因此，ZVI纳米粒子的性质本质上是高度动态的，并且是合成化学和粒子老化的函数。不幸的是，这种动态特性在公开文献中经常被忽略。结果，文献中报道的ZVI纳米颗粒的尺寸范围从几纳米到几百纳米，并且反应性相差几个数量级。此外，请读者注意，如本文所述，稳定的ZVI纳米颗粒在水悬浮液中以离散颗粒的形式存在，而不稳定的ZVI“纳米颗粒”以团块的形式存在，其数量级可能比纳米级大。然而，ZVI颗粒的这些聚集体在文献中通常被称为纳米颗粒。

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  • 来源
    《Environmental Science & Technology》 |2008年第9期|p.3480|共1页
  • 作者

    Feng He; Dongye Zhao;

  • 作者单位

    Department of Civil Engineering, Auburn University, Auburn, Alabama 36849;

  • 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
  • 中图分类 环境化学;
  • 关键词

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