林国庆,李文娟

• 1:中国海洋大学海洋环境与生态教育部重点实验室
• 2:山东省海洋环境地质工程重点实验室中国海洋大学环境科学与工程学院

摘要(Abstract)：

本文首次利用海洋褐藻海蒿子提取液还原三价铁盐制备纳米铁(SP-Fe NPs),并且采用UV-Vis、TEM、SAED、XRD和FTIR等对制备样品的形貌、粒径、晶态、基团组成等特性进行表征分析。以Cr(VI)为目标污染物,对比分析了SPFe NPs悬浊液、固液分离后的SP-Fe NPs沉淀等对Cr(VI)的去除效果。结果表明,制备的SP-Fe NPs呈规则的球形或椭球形,粒径范围为8~28nm,选区电子衍射(SAED)显示制备的纳米颗粒既有晶体也有非晶体。SP-Fe NPs表面包裹着一层有机物,含有多酚、蛋白质以及糖类物质,说明上述有机成分充当还原剂或包覆剂参与了SP-Fe NPs的制备。SP-Fe NPs对Cr(VI)的去除机理主要是氧化还原作用,SP-Fe NPs悬浊液对Cr(VI)的去除效果要远高于SP-Fe NPs沉淀对Cr(VI)的去除。

关键词(KeyWords)： 海蒿子;绿色制备;纳米铁;Cr(VI)

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(40902066)资助~~

作者(Author): 林国庆,李文娟

DOI: 10.16441/j.cnki.hdxb.20180150

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