Study on the Synthesis Mechanism of Cuprous Oxide/Rectorite Nanocomposites by Polyol Method

Jin-Yi Chen, Wanyi Li, Ting-Ting Hai, Nian Li, Wei Li
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Abstract

Cuprous oxide(Cu2O)/rectorite nanocomposites were prepared through polyol method by using cupric acetate complex as precursor of Cu, aiming to utilize the iron species in the clay material and hydrogen peroxide derived from Cu2O to form a novel immobilized Fenton system. The obtained nanocomposites were characterized by X-ray diffraction, Scanning electron microscopy and X-ray Photoelectron Spectroscopy analysis. The results indicated that Cu2O exist in at least three forms: Cu2O adsorbed at surface, grew at the edge of layers, and plugged in montmorillonite-like layers of rectorite. The interaction mechanism between Cu2O and rectorite was that the Cu-O-Si bridging bond was formed by silicon-oxygen group(SiO4) and Cu2O.
多元醇法制备氧化亚铜/累托石纳米复合材料机理研究
以乙酸铜配合物为Cu的前驱体,采用多元醇法制备氧化亚铜/累托石纳米复合材料,目的是利用粘土材料中的铁元素和氧化亚铜生成的过氧化氢形成一种新型的固定化Fenton体系。通过x射线衍射、扫描电镜和x射线光电子能谱分析对所制得的纳米复合材料进行了表征。结果表明,Cu2O至少以三种形式存在:表面吸附、层边缘生长和插入类蒙脱石累托石层中。Cu2O与累托石的相互作用机制是硅氧基(SiO4)与Cu2O形成Cu-O-Si桥接键。
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