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首页> 外文期刊>Environmental Science & Technology >Comment on 'Colloidal Properties and Stability of Graphene Oxide Nanomaterials in the Aquatic Environment'
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Comment on 'Colloidal Properties and Stability of Graphene Oxide Nanomaterials in the Aquatic Environment'

机译:关于“氧化石墨烯纳米材料在水生环境中的胶体性质和稳定性”的评论

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摘要

Chowdhury et al. measure hydrodynamic diameter of graphene oxide (GO) nanoparticles in a 10 mM NaCl solution at different pH and conclude that "pH does not notably affect the physicochemical properties of GO, indicating pH will have a minor influence on the fate of GO in the aquatic environment." Then, other tests are conducted at fixed pH 5.5 to evaluate the effect of Ca~(2+), Mg~(2+), and Na~+ on GO stability. We conduct similar GO stability tests to Chowdhury et al. using NaCl and CaCl_2-NaCl solutions and aged tap water. GO content in the solutions is 10 mg/L. The tap water is aged in a closed container for several days to remove free chlorine in it. The solution pH is adjusted to desired levels using NaOH and HCl solutions. After 15 min of mixing, 2 mL of samples are taken for analysis of hydrodynamic diameter of GO nanoparticles using a Nano ZetaSizer ZEN3600 (Malvem Instrument, U.K.).
机译:Chowdhury等。在不同pH值下,在10 mM NaCl溶液中测量氧化石墨烯(GO)纳米颗粒的流体动力学直径,并得出结论:“ pH值不会显着影响GO的理化性质,表明pH值对水生环境中GO的命运影响较小。”然后,在固定pH 5.5下进行其他测试,以评估Ca〜(2 +),Mg〜(2+)和Na〜+对GO稳定性的影响。我们进行了与Chowdhury等类似的GO稳定性测试。使用NaCl和CaCl_2-NaCl溶液以及老化的自来水。溶液中的GO含量为10 mg / L。自来水在密闭容器中老化几天,以除去其中的游离氯。使用NaOH和HCl溶液将溶液的pH调节至所需水平。混合15分钟后,使用Nano ZetaSizer ZEN3600(Malvem Instrument,U.K.)采集2 mL样品,以分析GO纳米颗粒的流体动力学直径。

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  • 来源
    《Environmental Science & Technology》 |2014年第2期|1359-1359|共1页
  • 作者单位

    School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 7100SS, China;

    Center for Environmental Systems, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States;

    Center for Environmental Systems, Stevens Institute of Technology, Hoboken, New Jersey 07030, 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);
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  • 正文语种 eng
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