Electrospun Granular Hollow SnO2 Nanofibers Hydrogen Gas Sensors Operating at Low Temperatures

被引：168

作者：

Ab Kadir, Rosmalini ^{[1
,2
]}

Li, Zhenyu ^{[3
]}

Sadek, Abu Z. ^{[3
]}

Rani, Rozina Abdul ^{[1
]}

Zoolfakar, Ahmad Sabirin ^{[1
,2
]}

Field, Matthew R. ^{[4
]}

Ou, Jian Zhen ^{[1
]}

Chrimes, Adam F. ^{[1
]}

Kalantar-zadeh, Kourosh ^{[1
]}

机构：

[1] RMIT Univ, Sch Elect & Comp Engn, Melbourne, Vic 3001, Australia

[2] Univ Teknol MARA, Fac Elect Engn, Shah Alam 40450, Malaysia

[3] Deakin Univ, Inst Frontier Mat, Waurn Ponds, Vic 3216, Australia

[4] RMIT Univ, Sch Appl Sci, Melbourne, Vic 3001, Australia

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2014年 / 118卷 / 06期

关键词：

H-2 SENSING PROPERTIES; METAL-OXIDE SENSORS; TIN OXIDE; THIN-FILMS; HYDROTHERMAL SYNTHESIS; SENSITIVE PROPERTIES; ETHANOL; CO; PD; NANOPARTICLES;

D O I：

10.1021/jp411552z

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：

In this paper, we present H-2 gas sensors based on hollow and filled, well-aligned electrospun SnO2 nanofibers, operating at a low temperature of 150 degrees C. SnO2 nanofibers with diameters ranging from 80 to 400 nm have been successfully synthesized in which the diameter of the nanofibers can be controlled by adjusting the concentration of polyacrylonitrile in the solution for electrospinning. The presence of this polymer results in the formation of granular walls for the nanofibers. We discussed the correlation between nanofibers morphology, structure, oxygen vacancy contents and the gas sensing performances. X-ray photoelectron spectroscopy analysis revealed that the granular hollow SnO2 nanofibers, which show the highest responses, contain a significant number of oxygen vacancies, which are favorable for gas sensor operating at low temperatures.

引用

页码：3129 / 3139

页数：11

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