Fabrication and gas sensitivity in heterostructures of ortho-chloropolyaniline–ZnO nanocomposites

RSC Advances ◽  
2014 ◽  
Vol 4 (75) ◽  
pp. 39844-39852 ◽  
Author(s):  
Syed Khasim ◽  
Omar A Al-Hartomy
Keyword(s):  
Polymer Nanocomposites ◽  
Conducting Polymer ◽  
Gas Sensing ◽  
Gas Sensitivity ◽  
Sensing Properties ◽  
Gas Sensing Properties

Recently, the gas-sensing properties of conducting polymer nanocomposites have been widely investigated. In this study we report the gas sensing properties of novel ortho- chloropolyaniline–ZnO nanocomposites.

scholarly journals Gas sensing properties of conductive polymer nanocomposites

2011 ◽  
Vol 25 ◽  
pp. 243-246 ◽  
Author(s):  
C. Pandis ◽  
V. Peoglos ◽  
A. Kyritsis ◽  
P. Pissis
Keyword(s):  
Polymer Nanocomposites ◽  
Gas Sensing ◽  
Conductive Polymer ◽  
Sensing Properties ◽  
Gas Sensing Properties

Fabrication and Gas Sensing Properties of Nano γ-Fe2O3/ZnO Double-Layer Film Gas Sensor

2010 ◽  
Vol 29-32 ◽  
pp. 602-606 ◽  
Author(s):  
Kai Jin Huang ◽  
Li Yan ◽  
Chang Sheng Xie
Keyword(s):  
Gas Sensor ◽  
Double Layer ◽  
Gas Sensing ◽  
Single Layer ◽  
Gas Sensitivity ◽  
Layer Film ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Single Layer Film ◽  
Screen Printing Technology

The nano γ-Fe2O3/ZnO double-layer film gas sensor was fabricated by the screen printing technology and the hydrothermal method. XRD and SEM techniques were used to characterize the phases and morphologies of the film. The gas sensing properties of the gas sensor to ethanol were investigated. The result shows that the gas sensitivity of the gas sensor is higher than that of the nano γ-Fe2O3 single-layer film gas sensor and the nano ZnO single-layer film gas sensor. The high gas sensitivity of the nano γ-Fe2O3/ZnO double-layer film to ethanol was caused by the combined effect and nano effect.

scholarly journals Gas sensing properties of single conducting polymer nanowires and the effect of temperature

2009 ◽  
Vol 20 (43) ◽  
pp. 434014 ◽  
Author(s):  
Yaping Dan ◽  
Yanyan Cao ◽  
Tom E Mallouk ◽  
Stephane Evoy ◽  
A T Charlie Johnson
Keyword(s):  
Conducting Polymer ◽  
Gas Sensing ◽  
Effect Of Temperature ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Polymer Nanowires

scholarly journals Gas sensing properties of MWCNT layers electrochemically decorated with Au and Pd nanoparticles

2017 ◽  
Vol 8 ◽  
pp. 592-603 ◽  
Author(s):  
Elena Dilonardo ◽  
Michele Penza ◽  
Marco Alvisi ◽  
Riccardo Rossi ◽  
Gennaro Cassano ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Pd Nanoparticles ◽  
Gaseous Pollutants ◽  
Gas Sensitivity ◽  
Multiwalled Carbon ◽  
Sensing Properties ◽  
Pristine Mwcnts ◽  
Wide Range ◽  
Deposited Metal ◽  
Gas Sensing Properties

Multiwalled carbon nanotube (MWCNT)-based chemiresistors were electrochemically decorated with Au and Pd nanoparticles (NPs), resulting in an improvement in the detection of gaseous pollutants as compared to sensors based on pristine MWCNTs. Electrophoresis was used to decorate MWCNTs with preformed Au or Pd NPs, thus preserving their nanometer-sized dimensions and allowing the metal content to be tuned by simply varying the deposition time. The sensing response of unmodified and metal-decorated MWCNTs was evaluated towards different gaseous pollutants (e.g., NO2, H2S, NH3 and C4H10) at a wide range of concentrations in the operating temperature range of 45–200 °C. The gas sensing results were related to the presence, type and loading of metal NPs used in the MWCNT functionalization. Compared to pristine MWCNTs, metal-decorated MWCNTs revealed a higher gas sensitivity, a faster response, a better stability, reversibility and repeatability, and a low detection limit, where all of these sensing properties were controlled by the type and loading of the deposited metal catalytic NPs. Specifically, in the NO2 gas sensing experiments, MWCNTs decorated with the lowest Au content revealed the highest sensitivity at 150 °C, while MWCNTs with the highest Pd loading showed the highest sensitivity when operated at 100 °C. Finally, considering the reported gas sensing results, sensing mechanisms have been proposed, correlating the chemical composition and gas sensing responses.

Preparation of One-dimensional Pt/SnO2 Nanofibers and NOx Gas-sensing Properties

2013 ◽  
Vol 28 (6) ◽  
pp. 584-588 ◽  
Author(s):  
Shuang XU ◽  
Ying YANG ◽  
Hong-Yuan WU ◽  
Chao JIANG ◽  
Li-Qiang JING ◽  
...  
Keyword(s):  
Gas Sensing ◽  
One Dimensional ◽  
Sensing Properties ◽  
Gas Sensing Properties
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