Synthesis and characterization of hierarchical porous SnO2 for enhancing ethanol sensing properties

被引：57

作者：

Zhang, Bowen ^{[1
]}

Fu, Wuyou ^{[1
]}

Li, Huayang ^{[1
]}

Fu, Xinglin ^{[1
]}

Wang, Ying ^{[1
]}

Bala, Hari ^{[1
]}

Wang, Xiaodong ^{[1
]}

Sun, Guang ^{[1
]}

Cao, Jianliang ^{[1
]}

Zhang, Zhanying ^{[1
]}

机构：

[1] Henan Polytech Univ, Sch Mat Sci & Engn, Cultivating Base Key Lab Environm Friendly Inorga, Jiaozuo 454000, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2016年 / 363卷

基金：

中国国家自然科学基金;

关键词：

Hierarchical porous materials; SnO2; Polystyrene (PS) microspheres; Gas sensors; GAS; NANOTUBES; NANORODS; GROWTH;

D O I：

10.1016/j.apsusc.2015.12.042

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：

Hierarchical porous SnO2 (HP-SnO2) nanoparticles (NPs) were synthesized via a modified sol-gel method by employing polystyrene (PS) microspheres as a template and SnCl2 as a tin source. The samples presented a three-dimensional random arrangement of macropores with average pore diameter of about 210 nm, of which the pores walls were composed of NPs with the size of about 11 nm. The N-2-sorption analysis showed that the presence of the hierarchical mesoporous structure in the samples. The gas sensing measurements showed that the response of HP-SnO2 based sensor reached the maximum value at the operating temperature of 240 degrees C, which was 60 degrees C lower than that of SnO2 based sensor. Moreover, the HP-SnO2 exhibited a significant improvement for the response and a short response-recovery time to ethanol vapor. The results indicated that HP-SnO2 NPs were of great potential for application in ethanol sensors. (C) 2015 Elsevier B.V. All rights reserved.

引用

收藏

页码：560 / 565

页数：6

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