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首页> 外文期刊>Journal of the Indian Chemical Society >Terminalia bellirica mediated one-pot green synthesis of reduced graphene oxide-silver nanoparticle (RGO/AgNP) nanocomposite and its catalytic activity towards p-nitrophenol reduction in water
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Terminalia bellirica mediated one-pot green synthesis of reduced graphene oxide-silver nanoparticle (RGO/AgNP) nanocomposite and its catalytic activity towards p-nitrophenol reduction in water

机译：榄仁终端介导的一锅绿色还原氧化石墨烯-银纳米颗粒（RGO / AgNP）纳米复合物的合成及其对水中对硝基苯酚还原的催化活性

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摘要

We report a facile environmentally friendly one-pot synthetic route for the preparation of RGO/AgNP nanocomposite using Terminalia bellirica (T. bellirica) fruit extract as a reducing and stabilizing agent. The phenolic constituents of T. bellirica fruit extract played a key role in the reduction of both GO and Ag+ ions followed by uniform decoration of AgNPs onto the RGO surface. The obtained nanocomposite was characterized by UV-Visible, FTIR, XRD, SEM-EDS, TEM-SAED and Raman spectroscopy. The resultant nanocomposite exhibited excellent catalytic activity towards the reduction of 4-NP to 4-AP in the presence of NaBH4 as reducing agent in water. The reduction reaction obeyed pseudo-first order kinetics and the rate constant was increased with increasing catalytic doses.. Mechanisms for the synthesis of RGO/AgNP nanocomposite and catalytic reduction of 4-NP are discussed. This is a simple and low cost method for the fabrication of highly active catalyst material for the reduction of anthropogenic pollutant 4-NP in water.
机译：我们报告了一种简便环保的一锅合成路线，用于使用榄仁榄仁（T. bellirica）果实提取物作为还原剂和稳定剂来制备RGO / AgNP纳米复合材料。百日草果实提取物中的酚类成分在还原GO和Ag +离子，随后将AgNP均匀装饰到RGO表面上起着关键作用。通过UV-可见，FTIR，XRD，SEM-EDS，TEM-SAED和拉曼光谱对所获得的纳米复合材料进行表征。在作为水的还原剂的NaBH 4存在下，所得纳米复合材料表现出优异的催化活性，可将4-NP还原为4-AP。还原反应服从拟一级动力学，速率常数随催化剂量的增加而增加。研究了RGO / AgNP纳米复合材料的合成及4-NP催化还原的机理。这是一种用于制造高活性催化剂材料以减少水中人为污染物4-NP的简单且低成本的方法。

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