scholarly journals A room temperature operated ammonia gas sensor based on Ag-decorated TiO2 quantum dot clusters

RSC Advances ◽  
2019 ◽  
Vol 9 (42) ◽  
pp. 24519-24526 ◽  
Author(s):  
Haixin Liu ◽  
Wenhao Shen ◽  
Xiaoquan Chen
Keyword(s):  
Titanium Dioxide ◽  
Low Temperature ◽  
Quantum Dot ◽  
Gas Sensor ◽  
Room Temperature ◽  
Ammonia Gas ◽  
Nanometer Size ◽  
Hydrolysis Method

In this research, nanometer size aggregates (clusters) of titanium dioxide (TiO2) quantum dot clusters (QDs) have been successfully prepared via a convenient hydrolysis method at a low temperature (80 °C).

scholarly journals Enhancing room-temperature NO2 gas sensing performance based on a metal phthalocyanine/graphene quantum dot hybrid material

RSC Advances ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 5618-5628
Author(s):  
Wenkai Jiang ◽  
Xinwei Chen ◽  
Tao Wang ◽  
Bolong Li ◽  
Min Zeng ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Gas Sensor ◽  
Hybrid Material ◽  
High Performance ◽  
Room Temperature ◽  
Gas Sensing ◽  
Metal Phthalocyanine ◽  
Graphene Quantum Dot ◽  
Sensing Performance

A high performance gas sensor based on a metal phthalocyanine/graphene quantum dot hybrid material was fabricated for NO2 detection at room-temperature.

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

Sensitivity enhancement of ammonia gas sensor based on Ag/ZnO flower and nanoellipsoids at low temperature

2018 ◽  
Vol 255 ◽  
pp. 672-683 ◽  
Author(s):  
Sankar Ganesh R. ◽  
Navaneethan M. ◽  
V.L. Patil ◽  
Ponnusamy S. ◽  
Muthamizhchelvan C. ◽  
...  
Keyword(s):  
Low Temperature ◽  
Gas Sensor ◽  
Sensitivity Enhancement ◽  
Ammonia Gas
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