UV-enhanced NO2 sensor using ZnO quantum dots sensitized SnO2 porous nanowires

2022 ◽  
Author(s):  
Tianchen Jiang ◽  
xin liu ◽  
jianbo sun
Keyword(s):  
Quantum Dots ◽  
Gas Sensor ◽  
Uv Irradiation ◽  
Gas Sensing ◽  
Complex Impedance ◽  
Sensing Properties ◽  
Sensing Mechanism ◽  
No2 Sensor ◽  
Zno Quantum Dots ◽  
Uv Excitation

Abstract ZnO quantum dots sensitized SnO2 porous nanowires were fabricated and designed for UV excitation gas sensor. The ZnO/SnO2 composite (SZQ1%) with the molar proportion of 1:100 exhibits excellent sensing properties to NO2 gas under UV irradiation at 40oC. The humidity stability of SZQ1% was also measured and discussed by DC reversed circuit and complex impedance curves. The gas sensing mechanism is well discussed and illustrated to the ZnO quantum dots sensitized and the increased photo-generated carriers under UV irradiation.

Synthesis and gas sensing properties of ZnO quantum dots

2010 ◽  
Vol 146 (1) ◽  
pp. 111-115 ◽  
Author(s):  
A. Forleo ◽  
L. Francioso ◽  
S. Capone ◽  
P. Siciliano ◽  
P. Lommens ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Gas Sensing ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Zno Quantum Dots

Synthesis and Gas Sensing Properties of ZnO Quantum Dots

2009 ◽  
pp. 169-172
Author(s):  
A. Forleo ◽  
L. Francioso ◽  
S. Capone ◽  
P. Siciliano ◽  
P. Lommens ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Gas Sensing ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Zno Quantum Dots

UV excitation NO2 gas sensor sensitized by ZnO quantum dots at room temperature

2018 ◽  
Vol 259 ◽  
pp. 526-531 ◽  
Author(s):  
Tong Wu ◽  
Zhenbo Wang ◽  
Menghan Tian ◽  
Jiayu Miao ◽  
Haixue Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Gas Sensor ◽  
Room Temperature ◽  
No2 Gas Sensor ◽  
Zno Quantum Dots ◽  
Uv Excitation

Perovskite-structured LaCoO3 modified ZnO gas sensor and investigation on its gas sensing mechanism by first principle

2021 ◽  
Vol 341 ◽  
pp. 130015
Author(s):  
Wenbo Qin ◽  
Zhenyu Yuan ◽  
Hongliang Gao ◽  
Renze Zhang ◽  
Fanli Meng
Keyword(s):  
Gas Sensor ◽  
Gas Sensing ◽  
First Principle ◽  
Sensing Mechanism

scholarly journals Preparation of Nanostructured SnO2-NiO Composite Semiconductor for Gas Sensor Applications

2021 ◽  
pp. 391-403
Author(s):  
S. Kumar ◽  
P. Gowthaman ◽  
J. Deenathayalan
Keyword(s):  
Gas Sensor ◽  
Composite Nanofibers ◽  
Volume Fraction ◽  
Gas Sensing ◽  
Precipitation Method ◽  
Response Sensitivity ◽  
X Ray ◽  
Sensing Properties ◽  
Working Temperature ◽  
Gas Sensing Properties

Electro spinning technology combined with chemical precipitation method and high-temperature calcination was used to prepare SnO2-NiO composite semiconductor nanofibers with different Sn content. Scanning electron microscope (SEM), X-ray diffractometer (XRD) and energy dispersive X-ray spectrometer (EDS) were used to characterize the morphology, structure and content of various elements of the sample. Using ethanol as the target gas, the gas sensing properties of SnO2-NiO nanofibers and the influence of Sn content on the gas sensing properties of composite nanofibers were explored. The research results show that SnO2-NiO composite nanofibers have a three-dimensional network structure, and the SnO2 composite can significantly enhance the gas sensitivity of NiO nanofibers. With increase of SnO2 content, the response sensitivity of composite fibers to ethanol gas increases, and the response sensitivity of composite nanofibers with the highest response to ethanol gas with a volume fraction of 100×10-6 at the optimal working temperature of 160℃ are13.4;It is 8.38 times the maximum response sensitivity of NiO nanofibers. Compared with the common ethanol gas sensor MQ-3 on the market, SnO2-NiO composite nanofibers have a lower optimal working temperature and higher response sensitivity, which has certain practical application value

scholarly journals P2GS.15 - Highly Sensitive Acetylene Sensing Properties of Al- and In-doped ZnO Quantum Dots

2018 ◽  
Author(s):  
M. S. Park ◽  
R. Yoo ◽  
B. Jang ◽  
Y. Park ◽  
M.H. Kim ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Sensing Properties ◽  
Highly Sensitive ◽  
Doped Zno ◽  
Zno Quantum Dots

UV enhanced NO gas sensing properties of the MoS2 monolayer gas sensor

2019 ◽  
Vol 6 (8) ◽  
pp. 085075 ◽  
Author(s):  
S Ramu ◽  
T Chandrakalavathi ◽  
G Murali ◽  
K Sunil Kumar ◽  
A Sudharani ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Gas Sensing ◽  
Sensing Properties ◽  
Mos2 Monolayer ◽  
Gas Sensing Properties

Gas‐Sensing Properties of Th / SnO2 Thin‐Film Gas Sensor to Trimethylamine

1999 ◽  
Vol 146 (9) ◽  
pp. 3536-3537 ◽  
Author(s):  
P. H. Wei ◽  
G. B. Li ◽  
S. Y. Zhao ◽  
L. R. Chen
Keyword(s):  
Thin Film ◽  
Gas Sensor ◽  
Gas Sensing ◽  
Sno2 Thin Film ◽  
Sensing Properties ◽  
Gas Sensing Properties
Sign in / Sign up

Export Citation Format

Share Document