Directional reduction of graphene oxide sheets using photocatalytic activity of ZnO nanowires for the fabrication of a high sensitive oxygen sensor

被引：24

作者：

Afzali, Parvaneh ^{[1
]}

Abdi, Yaser ^{[1
]}

Arzi, Ezatollah ^{[1
]}

机构：

[1] Univ Tehran, Dept Phys, Nanophys Res Lab, Tehran, Iran

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2014年 / 195卷

基金：

美国国家科学基金会;

关键词：

Graphene oxide; ZnO nanowires; High sensitive oxygen sensor; Photocatalytic activity; GAS SENSORS; SINGLE-LAYER; NANORIBBONS; MOLECULES; RIBBONS;

D O I：

10.1016/j.snb.2013.12.105

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Enhancement in sensitivity of graphene-based oxygen sensor using photocatalytic activity of ZnO nanowires is reported. For this purpose, ZnO nanowires were grown between comb-like electrodes using a novel oxygen plasma treatment approach. Graphene oxide sheets were then dispersed on the laterally grown nanowires. The fabricated heterostructures were exposed to ultra violet light to take advantage of the photocatalytic behavior of ZnO nanowires. Measurements indicated emerging reduced graphene oxide regions as a consequence of UV irradiation. Our results open up a promising approach to achieve conductive lines within the graphene oxide sheets to enhance the sensitivity of the structure to oxygen. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：92 / 97

页数：6

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