期刊
CHEMICAL ENGINEERING JOURNAL
卷 210, 期 -, 页码 195-202出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2012.08.085
关键词
Gold nanoparticles; Silicate sol-gel; beta-Cyclodextrin; Nitroaromatics; Electrocatalysis; Electrochemical sensor
资金
- Department of Science and Technology (DST), New Delhi
- CSIR-Senior Research Fellowship
Single step synthesis of gold nanoparticles (Au NPs) in aqueous solution using amine functionalized silane and beta-cyclodextrin (CD) composite is reported. High resolution transmission electron microscopy was used to characterize the 3 and 5 nm Au NPs embedded in beta-CD-silicate sol-gel matrix (TPDT) composite. The electrocatalysis and the sensing of nitroaromatics were studied at the Au NPs embedded in the beta-CD-TPDT composite modified electrode using the cyclic voltammetric and the square-wave voltammetric techniques. The square-wave voltammetric technique provides a facile, simple and fast quantitative method for the detection and determination of nitroaromatics at the Au NPs modified electrode. It is inferred that the beta-CD plays a predominant role both in the green synthesis of Au NPs embedded in beta-CD-TPDT composite and its applications in the electrocatalysis and sensing of nitroaromatics. (C) 2012 Elsevier B.V. All rights reserved.
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