High-response of NiO-modified self-assembled nanosheets formed with ZnO nanoparticles for n-butanol detection

被引：34

作者：

Chen, Xingtai ^{[1
]}

Liu, Tao ^{[1
]}

Han, Lu ^{[2
]}

Yin, Xi-Tao ^{[3
]}

机构：

[1] Northeastern Univ, Key Lab Ecol Met Multimet Ores, Minist Educ, Shenyang 110819, Liaoning, Peoples R China

[2] Univ Sci & Technol Liaoning, Sch Mat & Met, Anshan 114051, Peoples R China

[3] Ludong Univ, Sch Phys & Optoelect Engn, Yantai 264000, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2023年 / 390卷

基金：

中国国家自然科学基金;

关键词：

ZnO; NiO; Gas sensor; N-butanol; LOW-TEMPERATURE; IN2O3; NANOPARTICLES; GAS; SNO2;

D O I：

10.1016/j.snb.2023.134011

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Heterojunction fabrication is an effective way to improve the performance of gas sensors. In this work, NiOmodified ZnO nanoparticles and self-assembled nanosheets were prepared by a simple one-pot hydrothermal method. The morphological and structural characterizations demonstrated that the addition of NiO increased the surface area and provided more adsorption sites for the reaction. The results of gas sensing tests showed that the response of 1 % NiO-loaded ZnO to n-butanol reached 220 at 200 degrees C. In addition, the sensor exhibited better selectivity (4.5 times that of n-butanol for other target gases), repeatability, and long-term (25 days) stability. The gas sensing performance is mainly enhanced by the formation of heterojunctions; the corresponding mechanism is also described.

引用

页数：9