Synthesis of narrowly dispersed silver and gold nanoparticles and their catalytic evaluation for morin oxidation

被引：28

作者：

Ilunga, Ali K. ^{[1
]}

Meijboom, Reinout ^{[1
]}

机构：

[1] Univ Johannesburg, Dept Chem, ZA-2006 Johannesburg, South Africa

来源：

APPLIED CATALYSIS A-GENERAL | 2016年 / 509卷

基金：

新加坡国家研究基金会;

关键词：

Dendrimer; Langmuir-Hinshelwood; Oxidation; Silver nanoparticles; Gold nanoparticles; Morin; METHYLENE-BLUE; DENDRIMER; ADSORPTION; 4-NITROPHENOL; ENHANCEMENT; DEGRADATION; REDUCTION; REMOVAL; HYDRATE; DYES;

D O I：

10.1016/j.apcata.2015.10.019

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We present a study on the synthesis of narrowly dispersed silver and gold nanoparticles using generation five amino-terminated poly(amidoamine) dendrimers as a template. UV-vis spectrophotometry was performed to monitor the synthesis process and to characterize the metal nanoparticles. Infrared (IR) spectroscopy, and transmission electron microscopy (TEM) were also used to characterize the metal nanoparticles. A catalytic oxidation of morin (quercetin) in the presence of hydrogen peroxide was performed as a model reaction to evaluate the metal nanoparticle activities. Ultra high performance liquid chromatography analysis was performed to identify the reaction products. The kinetic data obtained were modeled to the Langmuir-Hinshelwood equation. The encapsulated silver and gold nanoparticles show high activity which confirm the passive interaction with the dendrimer. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：17 / 29

页数：13

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