Functionalization of indium-tin-oxide electrodes by laser-nanostructured gold thin films for biosensing applications

被引：14

作者：

Grochowska, Katarzyna ^{[1
]}

Siuzdak, Katarzyna ^{[1
]}

Karczewski, Jakub ^{[2
]}

Sliwinski, Gerard ^{[1
]}

机构：

[1] Polish Acad Sci, Szewalski Inst, Ctr Plasma & Laser Engn, PL-80231 Gdansk, Poland

[2] Gdansk Univ Technol, Fac Appl Phys & Math, Solid State Phys Dept, PL-80233 Gdansk, Poland

来源：

APPLIED SURFACE SCIENCE | 2015年 / 357卷

关键词：

Au nanoparticles; ITO electrodes; Non enzymatic glucose detection; Electrochemical methods; OPTICAL-ABSORPTION; ITO ELECTRODE; AG FILMS; NANOPARTICLES; GLUCOSE; SURFACE; AU; IMPLANTATION; OXIDATION; IRRADIATIONS;

D O I：

10.1016/j.apsusc.2015.10.053

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：

The production and properties of the indium-tin-oxide (ITO) electrodes functionalized by Au nanopartide (NP) arrays of a relatively large area formed by pulsed laser nanostructuring of thin gold films are reported and discussed. The SEM inspection of modified electrodes reveals the presence of the nearly spherical and disc-shaped particles of dimensions in the range of 40-120 nm. The NP-array geometry can be controlled by selection of the laser processing conditions. It is shown that particle size and packing density of the array are important factors which determine the electrode performance. In the case of NP-modified electrodes the peak current corresponding to the glucose direct oxidation process shows rise with increasing glucose concentration markedly higher comparing to the reference Au disc electrode. The detection limit reaches 12 mu M and linear response of the sensor is observed from 0.1 to 47 mM that covers the normal physiological range of the blood sugar detection. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：1684 / 1691

页数：8

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