scholarly journals Flexible nitrogen dioxide gas sensor based on reduced graphene oxide sensing material using silver nanowire electrode

2020 ◽  
Vol 69 (5) ◽  
pp. 058101
Author(s):  
Chuang Li ◽  
Wei-Wei Li ◽  
Li Cai ◽  
Dan Xie ◽  
Bao-Jun Liu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Nitrogen Dioxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensor ◽  
Silver Nanowire ◽  
Sensing Material ◽  
Reduced Graphene

scholarly journals Functionalized Reduced Graphene Oxide Thin Films for Ultrahigh CO2 Gas Sensing Performance at Room Temperature

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 623
Author(s):  
Monika Gupta ◽  
Huzein Fahmi Hawari ◽  
Pradeep Kumar ◽  
Zainal Arif Burhanudin ◽  
Nelson Tansu
Keyword(s):  
Thin Films ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensor ◽  
Functional Groups ◽  
Recovery Time ◽  
Room Temperature ◽  
Co2 Gas ◽  
Reduced Graphene ◽  
Response And Recovery

The demand for carbon dioxide (CO2) gas detection is increasing nowadays. However, its fast detection at room temperature (RT) is a major challenge. Graphene is found to be the most promising sensing material for RT detection, owing to its high surface area and electrical conductivity. In this work, we report a highly edge functionalized chemically synthesized reduced graphene oxide (rGO) thin films to achieve fast sensing response for CO2 gas at room temperature. The high amount of edge functional groups is prominent for the sorption of CO2 molecules. Initially, rGO is synthesized by reduction of GO using ascorbic acid (AA) as a reducing agent. Three different concentrations of rGO are prepared using three AA concentrations (25, 50, and 100 mg) to optimize the material properties such as functional groups and conductivity. Thin films of three different AA reduced rGO suspensions (AArGO25, AArGO50, AArGO100) are developed and later analyzed using standard FTIR, XRD, Raman, XPS, TEM, SEM, and four-point probe measurement techniques. We find that the highest edge functionality is achieved by the AArGO25 sample with a conductivity of ~1389 S/cm. The functionalized AArGO25 gas sensor shows recordable high sensing properties (response and recovery time) with good repeatability for CO2 at room temperature at 500 ppm and 50 ppm. Short response and recovery time of ~26 s and ~10 s, respectively, are achieved for 500 ppm CO2 gas with the sensitivity of ~50 Hz/µg. We believe that a highly functionalized AArGO CO2 gas sensor could be applicable for enhanced oil recovery, industrial and domestic safety applications.

Reduced Graphene Oxide for Room Temperature Ammonia (NH3) Gas Sensor

2018 ◽  
Vol 18 (11) ◽  
pp. 7927-7932 ◽  
Author(s):  
Weiwei Li ◽  
Xian Li ◽  
Li Cai ◽  
Yilin Sun ◽  
Mengxing Sun ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensor ◽  
Room Temperature ◽  
Reduced Graphene

scholarly journals A novel gas sensor based on porous α-Ni(OH)2 ultrathin nanosheet/reduced graphene oxide composites for room temperature detection of NOx

2016 ◽  
Vol 40 (5) ◽  
pp. 4678-4686 ◽  
Author(s):  
Ying Yang ◽  
Hongjie Wang ◽  
Linlin Wang ◽  
Yunlong Ge ◽  
Kan Kan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Response Time ◽  
Reduced Graphene Oxide ◽  
Gas Sensor ◽  
Room Temperature ◽  
Temperature Detection ◽  
Reduced Graphene ◽  
Ultrathin Nanosheet ◽  
Oxide Composites

Porous α-Ni(OH)2 TNS/rGO composites have a sensitivity of 64.4% and a response time of 10.0 s to 97.0 ppm NOx.

scholarly journals Supramolecularly assembled isonicotinamide/reduced graphene oxide nanocomposite for room-temperature NO2 gas sensor

2021 ◽  
pp. 102066
Author(s):  
Ahmad Umar ◽  
Ahmed A. Ibrahim ◽  
Hassan Algadi ◽  
Hasan Albargi ◽  
Mabkhoot A. Alsairi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensor ◽  
Room Temperature ◽  
No2 Gas Sensor ◽  
Reduced Graphene

scholarly journals P1GS.3 - A low Temperature H2 Gas Sensor Based on Pt-loaded Reduced Graphene Oxide/ZnO Nanocomposites

2018 ◽  
Author(s):  
Q. A. Drmosh ◽  
Z. H. Yamani ◽  
A. H. Y. Hendi ◽  
M. A. Gondal ◽  
R. A. Moqbel
Keyword(s):  
Graphene Oxide ◽  
Low Temperature ◽  
Reduced Graphene Oxide ◽  
Gas Sensor ◽  
Reduced Graphene
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