In-situ Chemical Synthesis of Polypyrrole/Silver Nanocomposite for the Use as a Room Temperature Ammonia Gas Sensor

2018 ◽  
Vol 19 (10) ◽  
pp. 2188-2194 ◽  
Author(s):  
Gholamreza Kiani ◽  
Abolfazl Nourizad ◽  
Rahimeh Nosrati
Keyword(s):  
Chemical Synthesis ◽  
Gas Sensor ◽  
Room Temperature ◽  
Ammonia Gas ◽  
Silver Nanocomposite

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

Polypyrrole Thin Film: Room Temperature Ammonia Gas Sensor

2011 ◽  
Vol 11 (9) ◽  
pp. 2137-2141 ◽  
Author(s):  
M. A. Chougule ◽  
S. G. Pawar ◽  
S. L. Patil ◽  
B. T. Raut ◽  
P. R. Godse ◽  
...  
Keyword(s):  
Thin Film ◽  
Gas Sensor ◽  
Room Temperature ◽  
Ammonia Gas

In Situ Self-Assembled Graphene-Polyaniline Nanocomposite Thin Films for Ammonia Gas Sensor

2014 ◽  
Vol 998-999 ◽  
pp. 63-66
Author(s):  
Ning Jie Guo ◽  
Hui Ling Tai ◽  
Zong Biao Ye ◽  
Guang Zhong Xie
Keyword(s):  
Gas Sensor ◽  
Self Assembly ◽  
Nanocomposite Film ◽  
Graphene Film ◽  
Ammonia Gas ◽  
Assembly Method ◽  
Vis Spectroscopy ◽  
Nanocomposite Thin Films ◽  
Polyaniline Nanocomposite

In this paper, the graphene-polyaniline (PANI) nanocomposite thin film was prepared by the in situ self-assembly method for the ammonia (NH3) gas sensor application, which was characterized by scanning electron microscopy (SEM) and UV-vis spectroscopy. The NH3 sensing performance and mechanism of the nanocomposite film were investigated. The results revealed that the sensor based on graphene-polyaniline nanocomposite film exhibited better sensing properties and restorability than those of single graphene film.

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