Graphene thin film electrodes synthesized by thermally treating co-sputtered nickel-carbon mixed layers for detection of trace lead, cadmium and copper ions in acetate buffer solutions

被引：20

作者：

Wang, Zhaomeng ^{[1
]}

Lee, Pui Mun ^{[1
]}

Liu, Erjia ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

来源：

THIN SOLID FILMS | 2013年 / 544卷

关键词：

Graphene; Solid-state carbon diffusion; Square wave anodic stripping voltammetry; Trace lead; copper and cadmium; Acetate buffer solution; Bismuth modification; AMORPHOUS-CARBON; VOLTAMMETRIC BEHAVIOR; GROWTH; CATALYST; TEMPERATURE; DEPOSITION; NANOWIRES; METALS;

D O I：

10.1016/j.tsf.2013.02.102

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Graphene thin films were synthesized using a solid-state carbon diffusion method by thermally treating (heating at 1000 degrees C for 3 min and then cooling) nickel-carbon (Ni-C) mixed layers co-sputtered on silicon (Si) substrates with or without a silicon dioxide layer. Field-emission scanning electron microscopy, high resolution transmission electron microscopy and Raman spectroscopy were used to characterize the structure and composition of both the as-deposited and thermally treated Ni-C coated samples with respect to the C concentration of the Ni-C thin films. The graphene thin films were used as working electrodes in the simultaneous detection of trace heavy metal ions (Pb2+, Cd2+ and Cu2+) in acetate buffer solutions modified with bismuth ions (Bi3+). The enhancing effect of Bi3+ on the electroanalytical performance of the graphene electrodes was studied. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：341 / 347

页数：7

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