Synthesis and gas sensing properties of NiO/SnO2 hierarchical structures toward ppb-level acetone detection

被引：92

作者：

Hu, Jie ^{[1
,2
]}

Yang, Jie ^{[1
,2
]}

Wang, Wenda ^{[1
,2
]}

Xue, Yan ^{[1
,2
]}

Sun, Yongjiao ^{[1
,2
]}

Li, Pengwei ^{[1
,2
]}

Lian, Kun ^{[1
,2
]}

Zhang, Wendong ^{[1
,2
]}

Chen, Lin ^{[3
]}

Shi, Jian ^{[4
]}

Chen, Yong ^{[4
]}

机构：

[1] Taiyuan Univ Technol, Minist Educ, Key Lab Adv Transducers & Intelligent Control Sys, Micro & Nano Syst Res Ctr, Taiyuan 030024, Shanxi, Peoples R China

[2] Taiyuan Univ Technol, Coll Informat Engn, Taiyuan 030024, Shanxi, Peoples R China

[3] Taiyuan Univ Technol, Res Ctr Adv Mat Sci & Technol, Taiyuan 030024, Shanxi, Peoples R China

[4] UPMC, Univ Paris 06, Sorbonne Univ,PSL Res Univ, Ecole Normale Super,Dept Chim,CNRS UMR PASTEUR 86, 24 Rue Lhomond, F-75005 Paris, France

来源：

MATERIALS RESEARCH BULLETIN | 2018年 / 102卷

基金：

中国国家自然科学基金;

关键词：

Hydrothermal method; Hierarchical structures; NiO/SnO2; Gas sensor; Acetone; DOPED SNO2 NANOFIBERS; FACILE SYNTHESIS; HOLLOW SPHERES; SELECTIVE DETECTION; FAST-RESPONSE; THIN-FILMS; SENSOR; PERFORMANCE; DIAGNOSIS; VOCS;

D O I：

10.1016/j.materresbull.2018.02.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have synthesized pristine SnO2 and NIO/SnO2 hierarchical structures by a facile hydrothermal method. Structural and morphological characterizations of the obtained NiO/SnO2 samples were systematically studied using XRD, SEM, TEM and XPS. Meanwhile, gas-sensing properties of the as-fabricated pristine SnO2 and NiO/SnO2 sensor devices were investigated toward ppb-level acetone detection. The measured results show that the Ni1Sn3 gas sensor can reach a response of 20.18 toward 50 ppm acetone under optimum operating temperature (300 degrees C), which is about 3.3 times higher than that of pristine sensor. Moreover, the Ni1Sn3 gas sensor also exhibits fast response/recovery time (2 s/9 s), low detection limit (10 ppb) and good selectivity. We attribute the enhanced gas-sensing properties of NiO/SnO2 hierarchical structures to the synergetic effect as well as p-n heterojunction between the NiO and SnO2 structures.

引用

页码：294 / 303

页数：10

共 40 条

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