Hydrothermally synthesized CuO based volatile organic compound gas sensor

RSC Advances ◽  
2014 ◽  
Vol 4 (101) ◽  
pp. 57975-57982 ◽  
Author(s):  
Shufeng Xia ◽  
Huichao Zhu ◽  
Haitao Cai ◽  
Jiaqi Zhang ◽  
Jun Yu ◽  
...  
Keyword(s):  
Organic Compound ◽  
Hydrothermal Method ◽  
Gas Sensor ◽  
Volatile Organic Compound ◽  
Single Phase ◽  
Gas Sensing ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Volatile Organic

In the present work, single-phase CuO particles were synthesized by a hydrothermal method and characterized by SEM, TEM and XRD. The gas sensing properties of the CuO based sensor to some representative flammable VOC gases were investigated.

Synthesis and VOC gas sensing properties of Polypyrrole / MoO3 Nanohybrids

2003 ◽  
Vol 785 ◽  
Author(s):  
Kouta Hosono ◽  
Ichiro Matsubara ◽  
Norimitsu Murayama ◽  
Shin Woosuck ◽  
Noriya Izu
Keyword(s):  
Thin Films ◽  
Organic Compound ◽  
Volatile Organic Compound ◽  
Crystallographic Orientation ◽  
Electrical Resistance ◽  
Gas Sensing ◽  
Sodium Ions ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Volatile Organic

ABSTRACTWe have prepared polypyrrole (PPy) / MoO3 nanohybrid thin films and evaluated their volatile organic compound (VOC) gas sensing properties. The (PPy)xMoO3 thin films have been prepared by intercalation reactions of highly oriented MoO3 thin films. Intercalation of hydrated sodium ions successfully proceeded without loosing the crystallographic orientation. The (PPy)xMoO3 thin films was obtained by replacing the hydrated sodium ions with PPy. The (PPy)xMoO3 thin films can detect formaldehyde gas by increasing in their electrical resistance, whereas they showed no response to toluene.

Synthesis of Polypyrrole/MoO3Hybrid Thin Films and Their Volatile Organic Compound Gas-Sensing Properties

2005 ◽  
Vol 17 (2) ◽  
pp. 349-354 ◽  
Author(s):  
Kouta Hosono ◽  
Ichiro Matsubara ◽  
Norimitsu Murayama ◽  
Shin Woosuck ◽  
Noriya Izu
Keyword(s):  
Thin Films ◽  
Organic Compound ◽  
Volatile Organic Compound ◽  
Gas Sensing ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Volatile Organic

scholarly journals Recent Advances in Silicon FET Devices for Gas and Volatile Organic Compound Sensing

Chemosensors ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 260
Author(s):  
Anwesha Mukherjee ◽  
Yossi Rosenwaks
Keyword(s):  
Organic Compound ◽  
Volatile Organic Compound ◽  
Gas Sensing ◽  
Field Effect Transistors ◽  
Medical Diagnostics ◽  
Silicon On Insulator ◽  
Oxide Semiconductor ◽  
Ultra Low Power ◽  
Sensing Properties ◽  
Volatile Organic

Highly sensitive and selective gas and volatile organic compound (VOC) sensor platforms with fast response and recovery kinetics are in high demand for environmental health monitoring, industry, and medical diagnostics. Among the various categories of gas sensors studied to date, field effect transistors (FETs) have proved to be an extremely efficient platform due to their miniaturized form factor, high sensitivity, and ultra-low power consumption. Despite the advent of various kinds of new materials, silicon (Si) still enjoys the advantages of excellent and reproducible electronic properties and compatibility with complementary metal–oxide–semiconductor (CMOS) technologies for integrated multiplexing and signal processing. This review gives an overview of the recent developments in Si FETs for gas and VOC sensing. We categorised the Si FETs into Si nanowire (NW) FETs; planar Si FETs, in which the Si channel is either a part of the silicon on insulator (SOI) or the bulk Si, as in conventional FETs; and electrostatically formed nanowire (EFN) FETs. The review begins with a brief introduction, followed by a description of the Si NW FET gas and VOC sensors. A brief description of the various fabrication strategies of Si NWs and the several functionalisation methods to improve the sensing performances of Si NWs are also provided. Although Si NW FETs have excellent sensing properties, they are far from practical realisation due to the extensive fabrication procedures involved, along with other issues that are critically assessed briefly. Then, we describe planar Si FET sensors, which are much closer to real-world implementation. Their simpler device architecture combined with excellent sensing properties enable them as an efficient platform for gas sensing. The third category, the EFN FET sensors, proved to be another potential platform for gas sensing due to their intriguing properties, which are elaborated in detail. Finally, the challenges and future opportunities for gas sensing are addressed.

Fabrication of Hierarchical SnO2 Nanocrystals and their Sensing Properties to Volatile Organic Compound Vapors

2011 ◽  
Vol 266 ◽  
pp. 1-4 ◽  
Author(s):  
De Liang Chen ◽  
Tao Li ◽  
Li Yin ◽  
Rui Zhang ◽  
Xin Jian Li
Keyword(s):  
Organic Compound ◽  
Volatile Organic Compound ◽  
Gas Sensing ◽  
Sno2 Nanostructures ◽  
X Ray Diffraction ◽  
Hierarchical Microstructure ◽  
X Ray ◽  
Sensing Properties ◽  
Volatile Organic ◽  
Sensing Performance

Hierarchical SnO2 (H-SnO2) and particulate SnO2 (P-SnO2) nanostructures were synthesized by a hydrothermal method with and without the aid of sodium 1-dodecanesulfonate (SDS), respectively. X-ray diffraction and scanning electron microscopy were used to characterize the products obtained. The sensing properties of the H-SnO2 and P-SnO2 nanostructures to volatile organic compound gas (VOCs) were measured. The H-SnO2 sensors show better gas-sensing performance than the P-SnO2 sensors due to the hierarchical microstructure.

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

Optimization and gas sensing properties of Au nanoparticle modified α-Fe2O3 nanodisk structures for highly sensitive acetone detection

2020 ◽  
Vol 44 (37) ◽  
pp. 16174-16184
Author(s):  
Haoyue Yang ◽  
Rui Zhou ◽  
Yongjiao Sun ◽  
Pengwei Li ◽  
Wendong Zhang ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Hydrothermal Method ◽  
Gas Sensing ◽  
Au Nanoparticle ◽  
Facile Hydrothermal Method ◽  
Sensing Properties ◽  
Highly Sensitive ◽  
Gas Sensing Properties ◽  
Acetone Detection

Au nanoparticle (Au NP) modified α-Fe2O3 nanodisk structures are obtained using a facile hydrothermal method and annealing based surface treatment.

Sign in / Sign up

Export Citation Format

Share Document