Preparation of Pd nanoparticle-decorated hollow SnO2 nanofibers and their enhanced formaldehyde sensing properties

被引：101

作者：

Lin, Ying ^{[1
]}

Wei, Wei ^{[1
]}

Li, Yujia ^{[1
]}

Li, Feng ^{[2
]}

Zhou, Jingran ^{[1
]}

Sun, Dongming ^{[1
]}

Chen, Yu ^{[3
]}

Ruan, Shengping ^{[2
]}

机构：

[1] Jilin Univ, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China

[2] Jilin Univ, Coll Elect Sci & Engn, Changchun 130012, Peoples R China

[3] Chinese Acad Sci, Inst Semicond, Beijing 100083, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 651卷

基金：

中国国家自然科学基金;

关键词：

Pd-decorated; SnO2; Hollow nanofiber; Formaldehyde sensor; GAS SENSOR; SHELL NANOREACTORS; ZNO; CO; PERFORMANCE; NANOSTRUCTURES; NANOBELTS; NANOWIRES; NANORODS; MICROSTRUCTURE;

D O I：

10.1016/j.jallcom.2015.08.174

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 Pd nanoparticles decorated hollow SnO2 nanofibers (NFs) were synthesized by the electrospinning technique and the wet decorating process. The properties of the sensing material were characterized by X-Ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). Compared with the pure SnO2 NFs gas sensor, the optimum operating temperature of Pd decorated hollow SnO2 NFs gas sensor dropped to 160 degrees C from 180 degrees C. The response to 100 ppm formaldehyde (HCHO) was raised to 18.8 from 5.4. Furthermore, the response-recovery characteristics were enhanced a lot. It is believed that its high gas sensing performance is derived from the hollow structure and the catalysis of Pd nanoparticles. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：690 / 698

页数：9

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