scholarly journals Investigation of CO2 reaction with copper oxide nanoparticles for room temperature gas sensing

2016 ◽  
Vol 4 (14) ◽  
pp. 5294-5302 ◽  
Author(s):  
N. B. Tanvir ◽  
O. Yurchenko ◽  
Ch. Wilbertz ◽  
G. Urban
Keyword(s):  
Low Power ◽  
Copper Oxide ◽  
Work Function ◽  
Gas Sensors ◽  
Room Temperature ◽  
Gas Sensing ◽  
Low Cost ◽  
Copper Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Reversible Formation

CO2 sensing at room temperature: the interaction of CO2 and H2O with copper oxide nanoparticles results in reversible formation of basic carbonates. This phenomenon is the key reaction for the work function readout based CO2 sensing which enables the prospects towards low power and low cost gas sensors.

ZnO-Based Gas Sensors Prepared by EPD and Hydrothermal Growth

2015 ◽  
Vol 654 ◽  
pp. 94-98 ◽  
Author(s):  
Roman Yatskiv ◽  
María Verde ◽  
Jan Grym
Keyword(s):  
Gas Sensors ◽  
Room Temperature ◽  
Gas Sensing ◽  
Low Cost ◽  
Zno Nanorods ◽  
Zno Films ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays ◽  
Current Voltage ◽  
Gas Sensing Properties

Arrays of vertically well aligned ZnO nanorods (NRs) were prepared on nanostructured ZnO films using a low temperature hydrothermal method. We propose the use of the low cost, environmentally friendly electrophoretic deposition technique (EPD) as seeding procedure, which allows the obtaining of homogeneous, well oriented nanostructured ZnO thin films. ZnO nanorod arrays were covered with graphite in order to prepare graphite/ZnO NRs junctions. These nanostructured junctions showed promising current-voltage rectifying characteristics and gas sensing properties at room temperature.

Low-power gas sensors based on work-function measurement in low-cost hybrid flip–chip technology

2001 ◽  
Vol 80 (3) ◽  
pp. 169-173 ◽  
Author(s):  
M. Fleischer ◽  
B. Ostrick ◽  
R. Pohle ◽  
E. Simon ◽  
H. Meixner ◽  
...  
Keyword(s):  
Low Power ◽  
Work Function ◽  
Gas Sensors ◽  
Flip Chip ◽  
Low Cost ◽  
Function Measurement ◽  
Chip Technology

Inkjet printing and photonic sintering of silver and copper oxide nanoparticles for ultra-low-cost conductive patterns

2016 ◽  
Vol 4 (16) ◽  
pp. 3546-3554 ◽  
Author(s):  
Andreas Albrecht ◽  
Almudena Rivadeneyra ◽  
Alaa Abdellah ◽  
Paolo Lugli ◽  
José F. Salmerón
Keyword(s):  
Copper Oxide ◽  
Inkjet Printing ◽  
Low Cost ◽  
Electronic Devices ◽  
Copper Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Post Processing ◽  
Processing Methods ◽  
Conductive Films ◽  
Photonic Sintering

Printing technologies to produce conductive films and electronic devices are well established and employ only inexpensive materials and devices as well as rapid post-processing methods.

scholarly journals MoS2 Nanosheets Sensitized with Quantum Dots for Room-Temperature Gas Sensors

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Jingyao Liu ◽  
Zhixiang Hu ◽  
Yuzhu Zhang ◽  
Hua-Yao Li ◽  
Naibo Gao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Gas Sensors ◽  
High Performance ◽  
Large Scale ◽  
Room Temperature ◽  
Gas Sensing ◽  
Low Cost ◽  
Surface And Interface ◽  
Sensor Performance ◽  
Semiconductor Gas Sensors

AbstractThe Internet of things for environment monitoring requires high performance with low power-consumption gas sensors which could be easily integrated into large-scale sensor network. While semiconductor gas sensors have many advantages such as excellent sensitivity and low cost, their application is limited by their high operating temperature. Two-dimensional (2D) layered materials, typically molybdenum disulfide (MoS2) nanosheets, are emerging as promising gas-sensing materials candidates owing to their abundant edge sites and high in-plane carrier mobility. This work aims to overcome the sluggish and weak response as well as incomplete recovery of MoS2 gas sensors at room temperature by sensitizing MoS2 nanosheets with PbS quantum dots (QDs). The huge amount of surface dangling bonds of QDs enables them to be ideal receptors for gas molecules. The sensitized MoS2 gas sensor exhibited fast and recoverable response when operated at room temperature, and the limit of NO2 detection was estimated to be 94 ppb. The strategy of sensitizing 2D nanosheets with sensitive QD receptors may enhance receptor and transducer functions as well as the utility factor that determine the sensor performance, offering a powerful new degree of freedom to the surface and interface engineering of semiconductor gas sensors.

scholarly journals Green synthesis of copper oxide nanoparticles using Bougainvillea leaves aqueous extract and antibacterial activity evaluation

2021 ◽  
Author(s):  
CI Chemistry International
Keyword(s):  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Copper Oxide ◽  
Green Synthesis ◽  
Aqueous Extract ◽  
Low Cost ◽  
Copper Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Bacterial Strains ◽  
Cost Efficient

The aim of present study is based on low cost, efficient, non-toxic and eco-friendly method for green synthesis of copper oxide nanoparticles (CuONPs) using Bougainvillea leaves aqueous extract. The green synthesized nanoparticles were subjected to characterization techniques UV–visible spectroscopy (UV–vis), X-ray diffraction (XRD), Fourier transform Infrared spectroscopy (FT-IR) and transmission electron microscope (TEM). The synthesized CuONPs were pure, predominantly spherical with sizes ranges from 8-20 nm. CuONPs showed excellent antimicrobial activity against various bacterial strains Escherichia coli, Enterococcus faecalis, and Staphylococcus aureus. Moreover, E. coli and E. faecalis exhibited the highest sensitivity to CuONPs while Staphylococcus aureus was the least sensitive. Possible mechanisms of antimicrobial activity of CuONPs should be further investigated.

Work Function Based CO2 Gas Sensing Using Metal Oxide Nanoparticles at Room Temperature

2015 ◽  
Vol 2 (8) ◽  
pp. 4190-4195 ◽  
Author(s):  
Nauman Bin Tanvir ◽  
Christoph Wilbertz ◽  
Stephan Steinhauer ◽  
Anton Köck ◽  
Gerald Urban ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Work Function ◽  
Room Temperature ◽  
Gas Sensing ◽  
Metal Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Co2 Gas
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