Outstanding gas sensing performance of CuO-CNTs nanocomposite based on asymmetrical schottky junctions

被引：38

作者：

Zhao, Yiming ^{[1
]}

Ikram, Muhammad ^{[1
]}

Zhang, Jiawei ^{[2
]}

Kan, Kan ^{[1
]}

Wu, Hongyuan ^{[1
]}

Song, Wanzhen ^{[1
]}

Li, Li ^{[1
]}

Shi, Keying ^{[1
]}

机构：

[1] Heilongjiang Univ, Sch Chem & Mat Sci, Key Lab Funct Inorgan Mat Chem, Minist Educ,Key Lab Phys Chem, Harbin 150080, Heilongjiang, Peoples R China

[2] Heilongjiang Univ, Sch Chem & Mat Sci, Key Lab Chem Engn Proc & Technol High Efficiency, Harbin 150080, Heilongjiang, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2018年 / 428卷

基金：

中国国家自然科学基金;

关键词：

1D CuO-CNTs composite; Carbon nanotubes (CNTs); Nitrogen dioxide (NO2); Gas sensor; FACILE SYNTHESIS; SENSOR; OXIDE; TEMPERATURE; NANOWIRES; NANORODS; FILMS; HETEROJUNCTION; NANOPARTICLES; SUBSTRATE;

D O I：

10.1016/j.apsusc.2017.09.173

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：

To fabricate a high-performance material for sensor devices at room temperature and further improve the synthetic approach of sensing materials, one dimensional (1D) CuO-CNTs nanocomposites were prepared with CNTs and CuO nanorods (NRs) via a facile reflux method. The 1D composite with the molar ratio of CuO and CNTs at 2.4:1 displays excellent gas sensing performance, i.e. the lowest detectable limit of 970 ppb and the short response time of 6s-97.0 ppm NO2 at room temperature. In the 1D composite, the CNTs part provides a channel to enable effective and fast carrier transport, while the CuO NRs fabricates an asymmetrical schottky contact at the interface between the composites and the Au electrode. The advantage of the synergy of CNTs and CuO which possesses superior conductivity benefits the sensing of our 1D CuO-CNTs composite by providing affluent electrons. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：415 / 421

页数：7

共 48 条

[1] Highly sensitive wireless H2S gas sensors at room temperature based on CuO-SWCNT hybrid nanomaterials [J].