Decorated CNT based on porous silicon for hydrogen gas sensing at room temperature

RSC Advances ◽  
2016 ◽  
Vol 6 (50) ◽  
pp. 44410-44414 ◽  
Author(s):  
Hamid Ghorbani Shiraz ◽  
Fatemeh Razi Astaraei ◽  
Somayeh Fardindoost ◽  
Zahra Sadat Hosseini
Keyword(s):  
Porous Silicon ◽  
Room Temperature ◽  
Gas Sensing ◽  
Hydrogen Gas

A new triple-component sensor for detection of H2 was developed based on porous silicon and CNTs.

Room-temperature hydrogen gas sensing properties of the networked Cr2O3-functionalized Nb2O5 nanostructured sensor

2016 ◽  
Vol 22 (4) ◽  
pp. 730-736 ◽  
Author(s):  
Sunghoon Park ◽  
Hyejoon Kheel ◽  
Gun-Joo Sun ◽  
Hyoun Woo Kim ◽  
Taegyung Ko ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Hydrogen Gas ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Nanostructured Sensor

Highly responsive hydrogen gas sensing by partially reduced graphite oxide thin films at room temperature

Carbon ◽  
2012 ◽  
Vol 50 (11) ◽  
pp. 4061-4067 ◽  
Author(s):  
Jianwei Wang ◽  
Youngreal Kwak ◽  
In-yeal Lee ◽  
Sunglyul Maeng ◽  
Gil-Ho Kim
Keyword(s):  
Thin Films ◽  
Graphite Oxide ◽  
Room Temperature ◽  
Gas Sensing ◽  
Hydrogen Gas ◽  
Oxide Thin Films ◽  
Reduced Graphite Oxide

Influence of Catalyst Loading Method on Titania-Based Optical Hydrogen Gas Sensing Properties

2013 ◽  
Vol 582 ◽  
pp. 210-213 ◽  
Author(s):  
Junichi Hamagami ◽  
Ryo Araki ◽  
Shohei Onimaru ◽  
G. Kawamura ◽  
Atsunori Matsuda
Keyword(s):  
Palladium Catalyst ◽  
Room Temperature ◽  
Gas Sensing ◽  
Hydrogen Gas ◽  
Catalyst Loading ◽  
Sensing Properties ◽  
Precise Control ◽  
Sensor Performance ◽  
Loading Method ◽  
Gas Sensing Properties

We reported that titania ceramic coating loaded with palladium catalyst worked as an optical hydrogen gas sensor at room temperature. The palladium metal of this sensor worked as a catalyst not only for room-temperature operation but also for high selectivity to hydrogen gas. Precise control of metal/ceramic interface between the titania and the palladium was very important in order to improve the sensor performance such as sensitivity, response time, recovery time. Influence of a difference in palladium-catalyst loading method (photodeposition and sputtering) on the optical hydrogen gas sensing properties for the titania-based sensor was investigated. It was found that the catalytic loading process significantly affected the optical hydrogen characteristics of the titania-based coating.

Conducting polyaniline/SnO2 nanocomposite for room temperature hydrogen gas sensing

2019 ◽  
Vol 15 ◽  
pp. 447-453 ◽  
Author(s):  
Nayana D. Sonwane ◽  
Monalisha D. Maity ◽  
Subhash B. Kondawar
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Hydrogen Gas ◽  
Conducting Polyaniline

Hydrogen Gas Sensing Characterizations Based on Nanocrystalline SnO2 Thin Films Grown on SiO2/Si and Al2O3 Substrates

2017 ◽  
Vol 268 ◽  
pp. 244-248
Author(s):  
Abu Hassan Haslan ◽  
Imad Hussein Kadhim
Keyword(s):  
Thin Films ◽  
Room Temperature ◽  
Gas Sensing ◽  
Sol Gel ◽  
Hydrogen Gas ◽  
Rutile Structure ◽  
Nanoparticle Distribution ◽  
Si Substrates ◽  
Coating Method ◽  
Different Temperatures

High-quality nanocrystalline (NC) SnO2 thin films were grown on SiO2/Si and Al2O3 substrates using sol–gel spin coating method. The structural properties, surface morphologies and gas sensing properties of the NC SnO2 were investigated. XRD measurements showed a tetragonal rutile structure and the diffraction peaks for NC SnO2 thin films grown on Al2O3 substrates outperformed those of NC SnO2 films grown on SiO2/Si substrates. The surface morphology of the annealed SnO2 thin films at 500 °C appeared as polycrystalline with uniform nanoparticle distribution. Hydrogen (H2) gas sensing performance of the NC SnO2 was examined for H2 concentrations ranging from 150 ppm to 1000 ppm at different temperatures (room temperature, 75 and 125 °C) for over 50 min. The room temperature sensitivities for H2 gas sensors based on NC SnO2 thin films grown on Al2O3 and SiO2/Si substrates was 2570% and 600%, respectively upon exposure to 1000 ppm of H2 gas. While the sensitivity values at 125 °C increased to 9200% and 1950%, respectively.

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