Solution processed CuPc based nanowires for room temperature Cl[sub 2] gas sensing applications

2013 ◽  
Author(s):  
Rajan Saini ◽  
Aman Mahajan ◽  
R. K. Bedi ◽  
D. K. Aswal
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Solution Processed ◽  
Sensing Applications

scholarly journals Transforming Pt-SnO2 Nanoparticles into Pt-SnO2 Composite Nanoceramics for Room-Temperature Hydrogen-Sensing Applications

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2123
Author(s):  
Ming Liu ◽  
Caochuang Wang ◽  
Pengcheng Li ◽  
Liang Cheng ◽  
Yongming Hu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Sintering Temperature ◽  
Sno2 Nanoparticles ◽  
Hydrogen Sensing ◽  
Sensing Applications ◽  
Nanostructured Metal Oxides ◽  
Low Dimensional ◽  
Sensing Characteristics ◽  
Nanostructured Metal

Many low-dimensional nanostructured metal oxides (MOXs) with impressive room-temperature gas-sensing characteristics have been synthesized, yet transforming them into relatively robust bulk materials has been quite neglected. Pt-decorated SnO2 nanoparticles with 0.25–2.5 wt% Pt were prepared, and highly attractive room-temperature hydrogen-sensing characteristics were observed for them all through pressing them into pellets. Some pressed pellets were further sintered over a wide temperature range of 600–1200 °C. Though the room-temperature hydrogen-sensing characteristics were greatly degraded in many samples after sintering, those samples with 0.25 wt% Pt and sintered at 800 °C exhibited impressive room-temperature hydrogen-sensing characteristics comparable to those of their counterparts of as-pressed pellets. The variation of room-temperature hydrogen-sensing characteristics among the samples was explained by the facts that the connectivity between SnO2 grains increases with increasing sintering temperature, and Pt promotes oxidation of SnO2 at high temperatures. These results clearly demonstrate that some low-dimensional MOX nanocrystals can be successfully transformed into bulk MOXs with improved robustness and comparable room-temperature gas-sensing characteristics.

scholarly journals Room-temperature synthesis and CO2-gas sensitivity of bismuth oxide nanosensors

RSC Advances ◽  
2020 ◽  
Vol 10 (29) ◽  
pp. 17217-17227 ◽  
Author(s):  
Pritamkumar V. Shinde ◽  
Nanasaheb M. Shinde ◽  
Shoyebmohamad F. Shaikh ◽  
Damin Lee ◽  
Je Moon Yun ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Bismuth Oxide ◽  
Room Temperature ◽  
Gas Sensing ◽  
Deposition Method ◽  
Gas Sensitivity ◽  
Temperature Synthesis ◽  
Co2 Gas ◽  
Surface Areas ◽  
Sensing Applications

Room-temperature (27 °C) synthesis and carbon dioxide (CO2)-gas-sensing applications of bismuth oxide (Bi2O3) nanosensors obtained via a direct and superfast chemical-bath-deposition method (CBD) with different surface areas and structures.

scholarly journals A Room Temperature Gas Sensor Based on Sulfonated SWCNTs for the Detection of NO and NO2

Sensors ◽  
2019 ◽  
Vol 19 (5) ◽  
pp. 1116 ◽  
Author(s):  
Eusebiu Ionete ◽  
Stefan Spiridon ◽  
Bogdan Monea ◽  
Elena Stratulat
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Electrical Response ◽  
Long Term Stability ◽  
Sensing Applications ◽  
Specific Configuration ◽  
P Type ◽  
Walled Carbon Nanotubes ◽  
Type Response

The electrical response of sulfonated single-walled carbon nanotubes (SWCNTs) to NO and NO2, for gas sensing applications, at room temperature, is reported in this work. A specific configuration based on SWCNT deposition between double pair configuration gold electrodes, supported on a substrate, was considered for the sensing device; employed characterization technique where FTIR and SEM. The experimental results showed a p-type response of the sulfonated SWCNTs, with decrease in resistance, under exposure to NO gas (40–200 ppb) and NO2 (40–200 ppb). Also, the sensor responses to successive exposures at NO2 800 ppb together with investigation of long term stability, at 485 ppb for NO, are reported. The reaction mechanism in case of NO and NO2 detection with sulfonated SWCNTs is presented.

scholarly journals Characterization of CuO thin films for gas sensing applications

2019 ◽  
Vol 14 (31) ◽  
pp. 1-12
Author(s):  
Jamal M. Rzaij
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Cupric Oxide ◽  
Laser Pulses ◽  
X Ray Diffraction ◽  
Energy Increase ◽  
Nano Structure ◽  
X Ray ◽  
Sensing Applications

Nanostructural cupric oxide (CuO) films were prepared on Si and glass substrate by pulsed laser deposition technique (PLD) using laser Nd:YAG, using different laser pulses energies from 200 to 600 mJ. The X-ray diffraction pattern (XRD) of the films showed a polycrystalline structure with a monoclinic symmetry and preferred orientation toward (111) plane with nano structure. The crystallite size was increasing with increasing of laser pulse energy. Optical properties was characterized by using UV–vis spectrometer in the wave lengthrange (200-1100) nm at room temperature. The results showed that the transmission spectrum decreases with the laser pulses energy increase. Sensitivity of NO2 gas at different operating temperatures, (50°C, 100°C, 150°C and 200°C) was calculated.

scholarly journals Enhancement of SnO2 for gas sensing applications

2021 ◽  
Vol 32 (3) ◽  
pp. 63
Author(s):  
O. S. Mahdi ◽  
Nadheer Jassim Mohammed
Keyword(s):  
Thin Films ◽  
Room Temperature ◽  
Gas Sensing ◽  
Rf Magnetron Sputtering ◽  
Ethanol Vapor ◽  
Gas Sensitivity ◽  
Sensing Applications ◽  
Sno2 Thin Films ◽  
The Rich ◽  
Reactive Rf Magnetron Sputtering

Thin films of SnO2 were deposited by reactive RF magnetron sputtering. It was shown that the films possess gas sensitivity to ethanol vapor at room temperature. XRD, SEM, and EDX measurements of thin films were investigated. Annealing of SnO2 thin films at 800 °С is polycrystalline and grain size of SnO2 in the range about 12 nm. The growth of SnO2 with annealing to 800 °C leads to the percolation nanorods structure. EDX clearly explains the rich of Sn reached 70% annealing. The conductivity of SnO2 nanorods has been increasing at room temperature for ethanol vapors. 

Synthesis and optical–electrochemical gas sensing applications of Ni-doped LiFePO4 nano-particles

2016 ◽  
Vol 40 (1) ◽  
pp. 295-301 ◽  
Author(s):  
N. Patima ◽  
Y. Abliz ◽  
I. Kiminori
Keyword(s):  
Hydrothermal Method ◽  
Room Temperature ◽  
Gas Sensing ◽  
Semiconductor Material ◽  
Nano Particles ◽  
Sensing Applications ◽  
One Step

A semiconductor material (LiFeNiPO4) was prepared using a one-step hydrothermal method and then its gas sensing performances at room temperature were investigated.

scholarly journals Investigation of the room temperature gas sensing properties of metal–organic charge transfer complex CuTCNQF4

2016 ◽  
Vol 4 (47) ◽  
pp. 11173-11179 ◽  
Author(s):  
Faegheh Hoshyargar ◽  
Mahnaz Shafiei ◽  
Carlo Piloto ◽  
Nunzio Motta ◽  
Anthony P. O'Mullane
Keyword(s):  
Remote Sensing ◽  
Charge Transfer ◽  
Room Temperature ◽  
Charge Transfer Complex ◽  
Gas Sensing ◽  
Significant Challenge ◽  
Sensing Applications ◽  
Gas Sensing Properties ◽  
Metal Organic ◽  
Remote Sensing Applications

The ability to detect and monitor toxic and greenhouse gases is highly important, however to achieve this at room temperature and allow for remote sensing applications is a significant challenge.

scholarly journals Gas sensing performance at room temperature of nanogap interdigitated electrodes for detection of acetone at low concentration

RSC Advances ◽  
2017 ◽  
Vol 7 (79) ◽  
pp. 50279-50286 ◽  
Author(s):  
Q. Nguyen Minh ◽  
H. D. Tong ◽  
A. Kuijk ◽  
F. van de Bent ◽  
P. Beekman ◽  
...  
Keyword(s):  
Large Scale ◽  
Room Temperature ◽  
Gas Sensing ◽  
Fabrication Technology ◽  
Micro Fabrication ◽  
Interdigitated Electrodes ◽  
Low Concentration ◽  
Sensing Applications ◽  
Nanogap Electrodes ◽  
Sensing Performance

A facile approach for the fabrication of large-scale interdigitated nanogap electrodes (nanogap IDEs) with a controllable gap was demonstrated with conventional micro-fabrication technology to develop chemocapacitors for gas sensing applications.

Submicrochains composed of massage ball-like WO3@CuWO4 composites for high-efficiency CO gas sensing applications at room temperature

RSC Advances ◽  
2016 ◽  
Vol 6 (74) ◽  
pp. 69999-70007 ◽  
Author(s):  
Linlin Wang ◽  
Afrasiab Ur Rehman ◽  
Hongyuan Wu ◽  
Baofeng Wu ◽  
Li Li ◽  
...  
Keyword(s):  
Room Temperature ◽  
High Efficiency ◽  
Gas Sensing ◽  
Sensing Applications ◽  
Sensing Performance ◽  
Co Gas

Submicrochains composed of massage ball-like WO3@CuWO4 have been prepared via a simple Cu2+ intercalation method. WO3@CuWO4 submicrochains sensors displayed excellent sensing performance to CO gas at room temperature.

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