Synthesis of PPy/silica nanocomposites with cratered surfaces and their application in heavy metal extraction
Synthesis of PPy/silica nanocomposites with cratered surfaces and their application in heavy metal extraction
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DOI：
10.1016/j.jiec.2011.11.115
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发表时间：
2012-01-25
影响因子：
6.1
通讯作者：
Kim, Sung Hyun
中科院分区：
文献类型：
--
作者：
Lim, Choon Woo;Song, Kigook;Kim, Sung Hyun
介绍了一种简单的模板法制备聚吡咯（PPy）/二氧化硅纳米复合材料的方法。该纳米复合材料是通过改性的二氧化硅模板的氧化/聚合的吡咯在FeCl 3氧化剂的存在下制备的，其特征在于通过各种方法，包括傅立叶变换红外光谱; BET比表面积;和透射电子显微镜（TEM）。聚吡咯/二氧化硅纳米复合材料的表面凹坑看起来像一个高尔夫球在TEM图像。在整个制造过程中，在4 mL硅溶胶溶液（Ludox SM-30）负载下，具有凹坑的PPy/二氧化硅纳米复合材料的最高BET表面积为306 m2/g，而没有凹坑的PPy/二氧化硅纳米复合材料在没有引入Ludox SM-30的情况下的比表面积仅为85 m2/g。此外，还研究了该材料对重金属离子（Hg ~（2+）、Ag ~（+）、Pb ~（2+））的吸附性能及其回收机理。Crown Copyright（C）2011由Elsevier B. V.代表韩国工业和工程化学学会出版。All rights reserved.
A simple fabrication method for a polypyrrole (PPy)/silica nanocomposite with a cratered surface using templated synthesis is described. This nanocomposite was prepared by a modified silica-templated oxidation/polymerization of pyrrole in the presence of FeCl3 oxidant and was characterized by various methods, including Fourier-transform infrared spectroscopy; BET specific surface area; and transmission electron microscopy (TEM). The PPy/silica nanocomposite with surface craters looked like a golf ball in TEM images. The highest BET surface area of PPy/silica nanocomposite with craters was 306 m(2)/g at 4 mL silica sol solution (Ludox SM-30) loading through the fabrication process, whereas a PPy/silica nanocomposite without craters had a specific surface area of only 85 m(2)/g with no Ludox SM-30 introduced. In addition, the material's adsorption capacity for heavy metal ions (Hg2+, Ag+, and Pb2+) and its recycling mechanism were investigated. Crown Copyright (C) 2011 Published by Elsevier B.V. on behalf of The Korean Society of Industrial and Engineering Chemistry. All rights reserved.