A direct comparison of nanosilver particles and nanosilver plates for the oxidation of ascorbic acid

被引：16

作者：

Sadeghi, Babak ^{[1
]}

Meskinfam, Masoumeh ^{[2
]}

机构：

[1] Islamic Azad Univ, Tonekabon Branch, Dept Chem, Tonekabon, Iran

[2] Islamic Azad Univ, Lahijan Branch, Dept Chem, Lahijan, Iran

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2012年 / 97卷

关键词：

Silver nanoparticles; Surfaces; Polymers; Ascorbic acid; PLANE PYROLYTIC-GRAPHITE; GOLD NANOPARTICLES; VOLTAMMETRIC DETERMINATION; CARBON NANOTUBES; CRYSTAL-GROWTH; ELECTRODE; REDUCTION; HEMOGLOBIN; ADSORPTION; SURFACE;

D O I：

10.1016/j.saa.2012.05.082

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

We study of spherical silver nanoparticles of different size and Ag nanoplates were grown at zinc tin oxide (ZTO) surface and characterized using SEM. The application of different electrodes in voltammetry for determination ascorbic acid indicated that oxidation of this biomolecule occurs at these electrodes in diffusion controlled process. Ag nanoplates modified zinc tin oxide electrodes exhibit at least two to three times higher current than spherical nanosilver particles. The observed behavior suggests that Ag nanoplates exhibit higher electrocatalytic activity than spherical silver nanoparticles. The reason for such behavior may be due to lattice plane as well as due to more available surface edges. As dimensions of nanoplates are increased surface area in the case of nanoplates also appears to play a significant role. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：326 / 328

页数：3

共 27 条

[1]

Bard A.J, 2002, Student Solutions Manual to accompany Electrochemical Methods: Fundamentals and Applicaitons, V2e

[2] Morphological controlled synthesis and catalytic activities of gold nanocrystals [J].

Bi, Yingpu ;

Lu, Gongxuan .

MATERIALS LETTERS, 2008, 62 (17-18) :2696-2699

[3] 3D-ensembles of gold nanowires: Preparation, characterization and electroanalytical peculiarities [J].

De Leo, Manuela ;

Kuhn, Alexander ;

Ugo, Paolo .

ELECTROANALYSIS, 2007, 19 (2-3) :227-236

[4] Sensors for 5-hydroxytryptamine and 5-hydroxyindole acetic acid based on nanomaterial modified electrodes [J].

Goyal, Rajendra N. ;

Oyama, Munetaka ;

Gupta, Vinod K. ;

Singh, Sudhanshu P. ;

Sharma, Ram A. .

SENSORS AND ACTUATORS B-CHEMICAL, 2008, 134 (02) :816-821

[5] Voltammetric determination of anabolic steroid nandrolone at gold nanoparticles modified ITO electrode in biological fluids [J].

Goyal, Rajendra N. ;

Oyama, Munetaka ;

Tyagi, Anuradha ;

Singh, Sudhanshu P. .

TALANTA, 2007, 72 (01) :140-144

[6] Differential pulse voltammetric determination of atenolol in pharmaceutical formulations and urine using nanogold modified indium tin oxide electrode [J].

Goyal, RN ;

Gupta, VK ;

Oyama, M ;

Bachheti, N .

ELECTROCHEMISTRY COMMUNICATIONS, 2006, 8 (01) :65-70

[7] Dye fluorescence enhancement and quenching by gold nanoparticles: Direct near-field microscopic observation of shape dependence [J].

Horimoto, Noriko Nishizawa ;

Imura, Kohei ;

Okamoto, Hiromi .

CHEMICAL PHYSICS LETTERS, 2008, 467 (1-3) :105-109

[8] A simple electroanalytical methodology for the simultaneous determination of dopamine, serotonin and ascorbic acid using an unmodified edge plane pyrolytic graphite electrode [J].

Kachoosangi, Roohollah Torabi ;

Compton, Richard G. .

ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 2007, 387 (08) :2793-2800

[9] Crystal growth of gold nanoparticles on indium tin oxides in the absence and presence of 3-mereaptopropyl-trimethoxysilane [J].

Kambayashi, M ;

Zhang, JD ;

Oyama, M .

CRYSTAL GROWTH & DESIGN, 2005, 5 (01) :81-84

[10] The advantage of using carbon nanotubes compared with edge plane pyrolytic graphite as an electrode material for oxidase-based biosensors [J].

Kurusu, F. ;

Tsunoda, H. ;

Saito, A. ;

Tomita, A. ;

Kadota, A. ;

Kayahara, N. ;

Karube, I. ;

Gotoh, M. .

ANALYST, 2006, 131 (12) :1292-1298

← 1 2 3 →