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丙酮冲洗法提高纳米零价铁抗氧化性能

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张常安, 金蕾, 黄应平, 田海林, 曹新强, 方艳芬. 丙酮冲洗法提高纳米零价铁抗氧化性能[J]. 环境化学, 2021, (3): 790-798. doi: 10.7524/j.issn.0254-6108.2020081808
引用本文: 张常安, 金蕾, 黄应平, 田海林, 曹新强, 方艳芬. 丙酮冲洗法提高纳米零价铁抗氧化性能[J]. 环境化学, 2021, (3): 790-798. doi: 10.7524/j.issn.0254-6108.2020081808
shu
ZHANG Chang, JIN Lei, HUANG Yingping, TIAN Hailin, CAO Xinqiang, FANG Yanfen. Anti-oxidation ability of nanoscale zero valent iron viaacetone flushing method[J]. Environmental Chemistry, 2021, (3): 790-798. doi: 10.7524/j.issn.0254-6108.2020081808
Citation: ZHANG Chang, JIN Lei, HUANG Yingping, TIAN Hailin, CAO Xinqiang, FANG Yanfen. Anti-oxidation ability of nanoscale zero valent iron viaacetone flushing method[J]. Environmental Chemistry, 2021, (3): 790-798. doi: 10.7524/j.issn.0254-6108.2020081808
shu

丙酮冲洗法提高纳米零价铁抗氧化性能

  • 1. 三峡大学生物与制药学院, 宜昌, 443002;

  • 2. 三峡大学水利与环境学院, 宜昌, 443002;

  • 3. 三峡大学三峡库区生态环境教育部工程研究中心, 宜昌, 443002

    • 通讯作者: 方艳芬, E-mail: chem_ctgu@126.com
  • 基金项目:

    国家自然科学基金（21972073，21677086，22076098），湖北省创新群体滚动项目（2015CFA021），湖北省引进外国人才和智力项目（2019BJH004），中国博士后科学基金（2018M640721）和三峡大学硕士培优基金（2020SSPY142）资助.

Anti-oxidation ability of nanoscale zero valent iron viaacetone flushing method

  • 1. College of Biology and Pharmacy, China Three Gorges University, Yichang, 443002, China;

  • 2. College of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang, 443002, China;

  • 3. Engineering Research Center of Eco-environment in Three Gorges Reservoir Region(China Three Gorges University), Yichang, 443002, China

    • Corresponding author: FANG Yanfen, chem_ctgu@126.com
  • Fund Project: Supported by National Natural Science Foundation of China (21972073, 21677086, 22076098), Hubei Innovative Group Rolling Project (2015CFA021), Hubei Province Introduced Foreign Talents and Intelligence Projects (2019BJH004), China Postdoctoral Science Foundation (2018M640721) and China Three Gorges University Master Training Fund (2020SSPY142).

  • 摘要: 纳米零价铁（nanoscale zero valent iron，nZVI）具有还原能力强、便于回收等优势，是目前广泛应用于地下水污染治理的一种活性纳米材料.然而，nZVI易被空气氧化失活及其储存难等问题严重地限制了其应用.为增强nZVI抗氧化能力，本文首次采用丙酮（acetone）对新制备的nZVI样品进行简单冲洗，并以水洗（water）作为对照，分别得到nZVIA和nZVIW样品.采用扫描电镜（SEM）、X-射线衍射（XRD）、X-射线光电子能谱（XPS）、傅里叶变换红外吸收光谱（FT-IR）和热重分析（TGA）等技术对样品的物理结构、表面性质进行了表征.结果发现，相较于表面粗糙、有大量氧化物存在的nZVIW，nZVIA为表面光滑球形，说明经丙酮简单冲洗能有效提高Fe0纯度.通过对在空气中持续暴露15 d后的样品进行XRD测试及其对甲基橙（MO）降解动力学实验，发现nZVIA具有优异的抗氧化能力，这源于通过配位吸附在nZVIA表面的丙酮分子起到的阻隔作用.此外，通过测试两种样品对三氯乙酸（trichloroacetic acid，TCA）脱氯实验，发现nZVIA对TCA的降解速率是nZVIW的3.37倍，对TCA具有更快的脱氯能力.本研究为制备高活性且兼有抗氧化能力的nZVI提供了一种十分简单的改性方法.
    Abstract: Thanks to the advantages in high-reductive capacity and recovery available, nanoscale Zero Valent Iron (nZVI) has been widely used as an active nanomaterial in the decontamination of groundwater. However, nZVI is easily oxidized and deactivated by air and difficult to store, which significantly limits its application. In order to improve the anti-oxidation ability of nZVI, acetone was firstly applied to rinse nZVI particles to obtain nZVIW, and water was used as the control regent to prepare nZVIA. The structure and properties of the two samples were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), infrared Fourier absorption spectroscopy (FT-IR) and thermogravimetric analysis (TGA). Compared to the presence of a large amount of oxides on the rough surface of nZVIW, nZVIA had spherical structure with smooth surface, indicating that simple washing of acetone can effectively improve the purity of Fe0. According to the XRD analysis and degradation experiment of methyl orange (MO) of samples that suffered 15 days of continuous exposure to air, nZVIA displayed excellent antioxidant capacity, which was mainly due to the barrier effect of acetone molecules adsorbed on the surface of nZVIA through coordination. Furthermore, the dechlorination experiment of Trichloroacetic Acid (TCA) showed that the degradation rate of TCA by nZVIA is 3.37 times higher than that of nZVIW and nZVIA had faster dechlorination rate of TCA. This study provided a very simple modification method for the preparation of nZVI with high activity and antioxidant capacity.
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  • 收稿日期:  2020-08-18
张常安, 金蕾, 黄应平, 田海林, 曹新强, 方艳芬. 丙酮冲洗法提高纳米零价铁抗氧化性能[J]. 环境化学, 2021, (3): 790-798. doi: 10.7524/j.issn.0254-6108.2020081808
引用本文: 张常安, 金蕾, 黄应平, 田海林, 曹新强, 方艳芬. 丙酮冲洗法提高纳米零价铁抗氧化性能[J]. 环境化学, 2021, (3): 790-798. doi: 10.7524/j.issn.0254-6108.2020081808
shu
ZHANG Chang, JIN Lei, HUANG Yingping, TIAN Hailin, CAO Xinqiang, FANG Yanfen. Anti-oxidation ability of nanoscale zero valent iron viaacetone flushing method[J]. Environmental Chemistry, 2021, (3): 790-798. doi: 10.7524/j.issn.0254-6108.2020081808
Citation: ZHANG Chang, JIN Lei, HUANG Yingping, TIAN Hailin, CAO Xinqiang, FANG Yanfen. Anti-oxidation ability of nanoscale zero valent iron viaacetone flushing method[J]. Environmental Chemistry, 2021, (3): 790-798. doi: 10.7524/j.issn.0254-6108.2020081808
shu

丙酮冲洗法提高纳米零价铁抗氧化性能

    通讯作者: 方艳芬, E-mail: chem_ctgu@126.com
  • 1. 三峡大学生物与制药学院, 宜昌, 443002;
  • 2. 三峡大学水利与环境学院, 宜昌, 443002;
  • 3. 三峡大学三峡库区生态环境教育部工程研究中心, 宜昌, 443002
  • 收稿日期:  2020-08-18
基金项目:

国家自然科学基金（21972073，21677086，22076098），湖北省创新群体滚动项目（2015CFA021），湖北省引进外国人才和智力项目（2019BJH004），中国博士后科学基金（2018M640721）和三峡大学硕士培优基金（2020SSPY142）资助.

摘要: 纳米零价铁（nanoscale zero valent iron，nZVI）具有还原能力强、便于回收等优势，是目前广泛应用于地下水污染治理的一种活性纳米材料.然而，nZVI易被空气氧化失活及其储存难等问题严重地限制了其应用.为增强nZVI抗氧化能力，本文首次采用丙酮（acetone）对新制备的nZVI样品进行简单冲洗，并以水洗（water）作为对照，分别得到nZVIA和nZVIW样品.采用扫描电镜（SEM）、X-射线衍射（XRD）、X-射线光电子能谱（XPS）、傅里叶变换红外吸收光谱（FT-IR）和热重分析（TGA）等技术对样品的物理结构、表面性质进行了表征.结果发现，相较于表面粗糙、有大量氧化物存在的nZVIW，nZVIA为表面光滑球形，说明经丙酮简单冲洗能有效提高Fe0纯度.通过对在空气中持续暴露15 d后的样品进行XRD测试及其对甲基橙（MO）降解动力学实验，发现nZVIA具有优异的抗氧化能力，这源于通过配位吸附在nZVIA表面的丙酮分子起到的阻隔作用.此外，通过测试两种样品对三氯乙酸（trichloroacetic acid，TCA）脱氯实验，发现nZVIA对TCA的降解速率是nZVIW的3.37倍，对TCA具有更快的脱氯能力.本研究为制备高活性且兼有抗氧化能力的nZVI提供了一种十分简单的改性方法.

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