A highly sensitive chlorine gas sensor and enhanced thermal DC electrical conductivity from polypyrrole/silicon carbide nanocomposites

RSC Advances ◽  
2016 ◽  
Vol 6 (87) ◽  
pp. 84200-84208 ◽  
Author(s):  
Adil Sultan ◽  
Sharique Ahmad ◽  
Faiz Mohammad
Keyword(s):  
Electrical Conductivity ◽  
Silicon Carbide ◽  
Gas Sensor ◽  
Dodecylbenzenesulfonic Acid ◽  
Chemical Polymerization ◽  
Dc Electrical Conductivity ◽  
Highly Sensitive ◽  
Chlorine Gas

We report the synthesis of polypyrrole (PPy) and polypyrrole/silicon carbide nanocomposites (PPy/SiC) and PPy/SiC/dodecylbenzenesulfonic acid (DBSA) by in situ chemical polymerization and their application as sensors for the detection of highly toxic chlorine gas.

Synthesis, Characterization and Electrical Properties of Polypyrrole/ Zirconia Nanocomposite and its Application as Ethene Gas Sensor

2017 ◽  
Vol 25 (9) ◽  
pp. 695-704 ◽  
Author(s):  
Adil Sultan ◽  
Sharique Ahmad ◽  
Faiz Mohammad
Keyword(s):  
Electrical Conductivity ◽  
The Other ◽  
X Ray Diffraction ◽  
X Ray ◽  
Dc Electrical Conductivity ◽  
Sensing Technology ◽  
Highly Sensitive ◽  
First Time ◽  
Scanning Electron

In this communication, we report the synthesis of polypyrrole (PPy) and polypyrrole/zirconia (PPy/ZrO2) nanocomposites by an in-situ chemical polymerisation method and their application as sensor for detection of ethene gas for the first time. The as-prepared PPy and PPy/ZrO2 nanocomposites were characterised by Fourier-transform infrared spectroscopy, thermogravimetric analysis, x-ray diffraction and scanning electron microscopy. The nanocomposite containing 20 wt.% of ZrO2 was found to possess higher DC (direct current) electrical conductivity than PPy and the other PPy/ZrO2 nanocomposites. Sensing response was calculated on the basis of change in DC electrical conductivity. The most conductive nanocomposite was found to be highly sensitive and reversible to ethene gas. This study indicates an effective approach to possible future sensing technology for the detection of ethene gas.

scholarly journals A Flexible, Highly Sensitive, and Selective Chemiresistive Gas Sensor Obtained by In Situ Photopolymerization of an Acrylic Resin in the Presence of MWCNTs

2018 ◽  
Vol 304 (2) ◽  
pp. 1800453 ◽  
Author(s):  
Lorenzo Vigna ◽  
Andrea Fasoli ◽  
Matteo Cocuzza ◽  
Fabrizio C. Pirri ◽  
Luisa D. Bozano ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Acrylic Resin ◽  
Highly Sensitive

scholarly journals A Nanocellulose Polypyrrole Composite Based on Tunicate Cellulose

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Dawei Zhang ◽  
Qing Zhang ◽  
Xin Gao ◽  
Guangzhe Piao
Keyword(s):  
Electron Microscopy ◽  
Electrical Conductivity ◽  
Ammonium Persulfate ◽  
High Electrical Conductivity ◽  
Chemical Polymerization ◽  
Transmission Electron ◽  
Mean Size ◽  
Polypyrrole Composite ◽  
Scanning Electron

The water-dispersed conductive polypyrrole (PPy) was prepared via thein situoxidative chemical polymerization by using ammonium persulfate (APS) as oxidant and tunicate cellulose nanocrystals (T-CNs) as a dopant and template for tuning the morphologies of PPy nanoparticles. Highly flexible paper-like materials of PPy/T-CNs nanocomposites with high electrical conductivity values and good mechanical properties were prepared. The structure of nanocomposites of PPy/T-CNs was investigated by using Fourier transform infrared spectroscopy. Scanning electron microscopy and transmission electron microscopy analyses of the composites revealed that PPy consisted of nanoparticles about 2.5 nm in mean size to form a continuous coating covered on the T-CNs. The diameters of the PPy nanoparticles increased from 10 to 100 nm with the increasing pyrrole amount. Moreover, electrical properties of the obtained PPy/T-CNs films were studied using standard four-probe technique and the electrical conductivity could be as high as 10−3 S/cm.

Rapid response and excellent recovery of a polyaniline/silicon carbide nanocomposite for cigarette smoke sensing with enhanced thermally stable DC electrical conductivity

RSC Advances ◽  
2016 ◽  
Vol 6 (64) ◽  
pp. 59728-59736 ◽  
Author(s):  
Sharique Ahmad ◽  
Adil Sultan ◽  
Faiz Mohammad
Keyword(s):  
Electrical Conductivity ◽  
Silicon Carbide ◽  
Cigarette Smoke ◽  
Rapid Response ◽  
Thermally Stable ◽  
Dc Electrical Conductivity ◽  
Smoke Sensor

In this paper, we present an electrical conductivity based rapid response cigarette smoke sensor with excellent recovery based on a polyaniline/silicon carbide (Pani/SiC) nanocomposite.

In situ enrichment amplification strategy enabling highly sensitive formaldehyde gas sensor

2022 ◽  
Vol 354 ◽  
pp. 131206
Author(s):  
Lei Zhu ◽  
Jianan Wang ◽  
Jianwei Liu ◽  
Zhicheng Xu ◽  
Muhammad Salman Nasir ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Highly Sensitive ◽  
Amplification Strategy

Highly Sensitive NiO Nanoparticle based Chlorine Gas Sensor

2018 ◽  
Vol 47 (7) ◽  
pp. 3451-3458 ◽  
Author(s):  
Mohd. Arif ◽  
Amit Sanger ◽  
Arun Singh
Keyword(s):  
Gas Sensor ◽  
Highly Sensitive ◽  
Chlorine Gas

scholarly journals TiO2/PANI nanocomposite loaded in PVA for anticorrosive applications

2016 ◽  
Vol 34 (4) ◽  
pp. 721-725 ◽  
Author(s):  
Rajeev Arora ◽  
Anupam Srivastav ◽  
Utam Kumar Mandal ◽  
Pankaj Sharma
Keyword(s):  
Electron Microscopy ◽  
Electrical Conductivity ◽  
Scanning Electron Microscopy ◽  
Composite Film ◽  
In Situ Polymerization ◽  
Nanocomposite Material ◽  
Dc Electrical Conductivity ◽  
Electrical Study ◽  
Scanning Electron

AbstractWe report the morphological and electrical study of a composite of polyvinyl alcohol (PVA) and nanotitanium dioxide (TiO2-50 nm) in conducting polymer polyaniline (PANI). The composite was synthesized using in-situ polymerization technique. The composite was characterized in terms of morphology and electrical properties using scanning electron microscopy and DC electrical conductivity (𝜎dc). We observed that the DC electrical conductivity of the composite film increased with increasing the loading of nanocomposite material from 20 % to 40 % into PVA stabilizer. The DC conductivity results showed that the molecular chain contribution of the nanocomposite material (nano-TiO2+ PANI) was the prominent carrier in the composite film made of the nanocomposite and PVA stabilizer.

Effect of Gamma Radiation on Structural, Optical and Electrical Properties of nanostructured CdHgTe Thin Films

2018 ◽  
Vol 1 (1) ◽  
pp. 26-31 ◽  
Author(s):  
B Babu ◽  
K Mohanraj ◽  
S Chandrasekar ◽  
N Senthil Kumar ◽  
B Mohanbabu
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Electrical Properties ◽  
Gamma Radiation ◽  
Glass Substrate ◽  
Gamma Ray ◽  
Optical And Electrical Properties ◽  
Deposition Technique ◽  
Polycrystalline Structure ◽  
Dc Electrical Conductivity

CdHgTe thin films were grown onto glass substrate via the Chemical bath deposition technique. XRD results indicate that a CdHgTe formed with a cubic polycrystalline structure. The crystallinity of CdHgTe thin films is gradually deteriorate with increasing the gamma irradiation. EDS spectrums confirms the presence of Cd, Hg and Te elements. DC electrical conductivity results depicted the conductivity of CdHgTe increase with increasing a gamma ray dosage

Sign in / Sign up

Export Citation Format

Share Document