Investigation of sheet resistance variation with annealing temperature and development of highly sensitive and selective room temperature ammonia gas sensor using functionalized graphene oxide

2021 ◽  
Author(s):  
Ravi Kumar ◽  
Anil Kumar ◽  
Rakesh Singh ◽  
Rajesh Kashyap ◽  
Dinesh Kumar ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Gas Sensor ◽  
Sheet Resistance ◽  
Room Temperature ◽  
Annealing Temperature ◽  
Functionalized Graphene ◽  
Ammonia Gas ◽  
Functionalized Graphene Oxide ◽  
Resistance Variation ◽  
Highly Sensitive

Room temperature ammonia gas sensor using Meta Toluic acid functionalized graphene oxide

2020 ◽  
Vol 240 ◽  
pp. 121922 ◽  
Author(s):  
Ravi Kumar ◽  
Anil Kumar ◽  
Rakesh Singh ◽  
Rajesh kashyap ◽  
Rajiv Kumar ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Gas Sensor ◽  
Room Temperature ◽  
Functionalized Graphene ◽  
Ammonia Gas ◽  
Functionalized Graphene Oxide

scholarly journals Room Temperature Chemoresistive Gas Sensor Based on Organic-Functionalized Graphene Oxide

Proceedings ◽  
2017 ◽  
Vol 1 (8) ◽  
pp. 805
Author(s):  
Matteo Valt ◽  
Barbara Fabbri ◽  
Andrea Gaiardo ◽  
Sandro Gherardi ◽  
Cesare Malagù ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Gas Sensor ◽  
Room Temperature ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide

Selective room temperature ammonia gas detection using 2-amino pyridine functionalized graphene oxide

2020 ◽  
Vol 110 ◽  
pp. 104920 ◽  
Author(s):  
Ravi Kumar ◽  
Anil Kumar ◽  
Rakesh Singh ◽  
Rajesh Kashyap ◽  
Rajiv Kumar ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Room Temperature ◽  
Gas Detection ◽  
Functionalized Graphene ◽  
Ammonia Gas ◽  
Functionalized Graphene Oxide

scholarly journals Ammonia Gas Detection by Tannic Acid Functionalized and Reduced Graphene Oxide at Room Temperature

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Sweejiang Yoo ◽  
Xin Li ◽  
Yuan Wu ◽  
Weihua Liu ◽  
Xiaoli Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensor ◽  
Tannic Acid ◽  
Room Temperature ◽  
Gas Sensing ◽  
High Sensitivity ◽  
Gas Detection ◽  
Ammonia Gas ◽  
Reduced Graphene

Reduced graphene oxide (rGO) based chemiresistor gas sensor has received much attention in gas sensing for high sensitivity, room temperature operation, and reversible. Here, for the first time, we present a promising chemiresistor for ammonia gas detection based on tannic acid (TA) functionalized and reduced graphene oxide (rGOTA functionalized). Green reductant of TA plays a major role in both reducing process and enhancing the gas sensing properties ofrGOTA functionalized. Our results showrGOTA functionalizedonly selective to ammonia with excellent respond, recovery, respond time, and recovery times.rGOTA functionalizedelectrical resistance decreases upon exposure to NH3where we postulated that it is due to n-doping by TA and charge transfer betweenrGOTA functionalizedand NH3through hydrogen bonding. Furthermore,rGOTA functionalizedhinders the needs for stimulus for both recovery and respond. The combination of greener sensing material and simplicity in overall sensor design provides a new sight for green reductant approach of rGO based chemiresistor gas sensor.

Room temperature ammonia gas sensor using ester functionalization of graphene oxide

2019 ◽  
Vol 6 (9) ◽  
pp. 095618
Author(s):  
Ravi Kumar ◽  
Anil Kumar ◽  
Rakesh Singh ◽  
Rajesh Kashyap ◽  
Rajiv Kumar ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Gas Sensor ◽  
Room Temperature ◽  
Ammonia Gas

scholarly journals Ultrafast and Highly Sensitive Chemically Functionalized Graphene Oxide-Based Humidity Sensors: Harnessing Device Performances via the Supramolecular Approach

2020 ◽  
Vol 12 (39) ◽  
pp. 44017-44025
Author(s):  
Cosimo Anichini ◽  
Alessandro Aliprandi ◽  
Sai Manoj Gali ◽  
Fabiola Liscio ◽  
Vittorio Morandi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Functionalized Graphene ◽  
Humidity Sensors ◽  
Functionalized Graphene Oxide ◽  
Highly Sensitive
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