Chemiluminescence of luminol catalyzed by silver nanoparticles

被引:112
作者
Chen, Hao [1 ]
Gao, Feng [1 ]
He, Rong [1 ]
Cui, Daxiang [1 ]
机构
[1] Shanghai Jiao Tong Univ, Res Inst Micro & Nano Sci & Technol, Dept Bionano Sci & Engn, Key Lab Thin Film & Microfabricat,Natl Key NMFT, Shanghai 200030, Peoples R China
关键词
silver nanoparticles; chemiluminescence; luminol; mechanism;
D O I
10.1016/j.jcis.2007.06.052
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
Silver nanoparticles (AgNPs) are synthesized by chemical reduction method and characterized by UV-vis spectra, transmission electron microscopy, and high performance particle sizer. We have found that AgNPs could enhance the chemiluminescence (CL) intensity of luminol-H2O2 system. In this reaction, luminol intermediate is generated under alkaline condition on the surface of AgNPs in luminol-H2O2 system and enhances CL intensity. To validate the reaction mechanism, AgNPs are bound with thioglycolic acid (Ag-HSCH2COOH) and then joined to BSA protein (Ag-BSA). We investigate the CL intensity in the presence of Ag-HSCH2COOH or Ag-BSA comparing with that in the presence of AgNPs and conclude the catalytic reaction take place on the surface of AgNPs. (c) 2007 Elsevier Inc. All rights reserved.
引用
收藏
页码:158 / 163
页数:6
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