In Situ and Operando Spectroscopy for Assessing Mechanisms of Gas Sensing

2007 ◽  
Vol 46 (21) ◽  
pp. 3826-3848 ◽  
Author(s):  
Alexander Gurlo ◽  
Ralf Riedel
Keyword(s):  
Gas Sensing ◽  
Operando Spectroscopy

Advances in understanding the gas sensing mechanisms by in-situ and operando spectroscopy

2021 ◽  
Author(s):  
Aditya Sharma ◽  
Chandra Sekhar Rout
Keyword(s):  
Gas Sensor ◽  
Gas Sensing ◽  
Active Sensing ◽  
Operando Spectroscopy ◽  
Physiochemical Properties ◽  
Comprehensive Knowledge ◽  
Gas Molecules

Comprehensive knowledge on the gas sensor mechanisms demands a detailed command of the physiochemical properties and features of the active sensing materials and their association with the analyte gas molecules....

In Situ Growth of Metal–Organic Framework Thin Films with Gas Sensing and Molecule Storage Properties

Langmuir ◽  
2013 ◽  
Vol 29 (27) ◽  
pp. 8657-8664 ◽  
Author(s):  
Wei-Jin Li ◽  
Shui-Ying Gao ◽  
Tian-Fu Liu ◽  
Li-Wei Han ◽  
Zu-Jin Lin ◽  
...  
Keyword(s):  
Thin Films ◽  
Gas Sensing ◽  
Metal Organic Framework ◽  
In Situ Growth ◽  
Metal Organic ◽  
Storage Properties ◽  
Organic Framework

Porous Iron Molybdate Nanorods: In situ Diffusion Synthesis and Low-Temperature H2S Gas Sensing

2013 ◽  
Vol 5 (8) ◽  
pp. 3267-3274 ◽  
Author(s):  
Yu-Jin Chen ◽  
Xin-Ming Gao ◽  
Xin-Peng Di ◽  
Qiu-Yun Ouyang ◽  
Peng Gao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Gas Sensing ◽  
Porous Iron ◽  
Iron Molybdate ◽  
In Situ Diffusion

scholarly journals A Novel Trace-Level Ammonia Gas Sensing Based on Flexible PAni-CoFe2O4 Nanocomposite Film at Room Temperature

Polymers ◽  
2021 ◽  
Vol 13 (18) ◽  
pp. 3077
Author(s):  
Rima D. Alharthy ◽  
Ahmed Saleh
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Oxidative Polymerization ◽  
Portable Devices ◽  
Trace Level ◽  
Humidity Effect ◽  
Sensor Performance ◽  
Wearable Electronic ◽  
Relative Humidity Effect

In this study, we developed a new chemi-resistive, flexible and selective ammonia (NH3) gas sensor. The sensor was prepared by depositing thin film of polyaniline-cobalt ferrite (PAni-CoFe2O4) nanocomposite on flexible polyethylene terephthalate (PET) through an in situ chemical oxidative polymerization method. The prepared PAni-CoFe2O4 nanocomposite and flexible PET-PAni-CoFe2O4 sensor were evaluated for their thermal stability, surface morphology and materials composition. The response to NH3 gas of the developed sensor was examined thoroughly in the range of 1–50 ppm at room temperature. The sensor with 50 wt% CoFe2O4 NPs content showed an optimum selectivity to NH3 molecules, with a 118.3% response towards 50 ppm in 24.3 s response time. Furthermore, the sensor showed good reproducibility, ultra-low detection limit (25 ppb) and excellent flexibility. In addition, the relative humidity effect on the sensor performance was investigated. Consequently, the flexible PET-PAni-CoFe2O4 sensor is a promising candidate for trace-level on-site sensing of NH3 in wearable electronic or portable devices.

In situ formation of Au/SnO 2 nanocrystals on WO 3 nanoplates as excellent gas-sensing materials for H 2 S detection

2014 ◽  
Vol 148 (3) ◽  
pp. 1099-1107 ◽  
Author(s):  
Li Yin ◽  
Deliang Chen ◽  
Hanwen Zhang ◽  
Gang Shao ◽  
Bingbing Fan ◽  
...  
Keyword(s):  
Gas Sensing ◽  
In Situ Formation

In situ Bi2O3-loaded polypyrrole nanocomposites for carbon dioxide gas sensing

2019 ◽  
Vol 28 (11) ◽  
pp. 933-941 ◽  
Author(s):  
Ashish R. Choudhary ◽  
Sandeep A. Waghuley
Keyword(s):  
Carbon Dioxide ◽  
Gas Sensing ◽  
Carbon Dioxide Gas
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