Olivine-type cadmium germanate: A new sensing semiconductor for the detection of formaldehyde at ppb level

2021 ◽  
Author(s):  
Jiayu Li ◽  
Qihua Liang ◽  
Bo Zhang ◽  
Hui Chen ◽  
Xinhua Tian ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Indoor Pollutant

Formaldehyde is the most popular and highly toxic indoor pollutant. It is very urgent to develop much sensitive formaldehyde gas sensors with remarkable sensitivity at ppb-level. In this work, the...

Assessment of odor characteristics of paprika by using gas sensors

2017 ◽  
Vol 16 (2) ◽  
pp. 129-138
Author(s):  
Sung-Joo Hong ◽  
◽  
Il-Hwan Choi ◽  
Yong-Geun Kim ◽  
Woo-Hyun Nam ◽  
...  
Keyword(s):  
Gas Sensors

Comparison of sensitivity of gas sensors for liquid n-Butanol analysis

2017 ◽  
Vol 16 (1) ◽  
pp. 64-71 ◽  
Author(s):  
Ha-Na Kim ◽  
◽  
Yong-Geun Kim ◽  
Sun-Tae Kim
Keyword(s):  
Gas Sensors

Semiconductor gas sensors

2013 ◽  
Author(s):  
Raivo Jaaniso ◽  
Ooi Kiang Tan
Keyword(s):  
Gas Sensors ◽  
Semiconductor Gas Sensors

Compact Optical Multi-gas Sensors using Micromachining Technology [ I ]

2013 ◽  
Vol 133 (6) ◽  
pp. 237-242
Author(s):  
Masahiro Ito ◽  
Tomoya Takeda ◽  
Takaaki Suzuki ◽  
Hidekuni Takao ◽  
Fumikazu Oohira ◽  
...  
Keyword(s):  
Gas Sensors

The Influence of Surface Doping on Adsorption Ability of Nanopowder Metal Oxides for Gas Sensors

2017 ◽  
Vol 9 (5) ◽  
pp. 05008-1-05008-5 ◽  
Author(s):  
Ya. V. Bobitski ◽  
◽  
R. V. Bovhyra ◽  
D. I. Popovych ◽  
S. S. Savka ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Gas Sensors ◽  
Adsorption Ability ◽  
Surface Doping

Metal-oxide based ammonia gas sensors: A review

2020 ◽  
Vol 10 ◽  
Author(s):  
Priya Gupta ◽  
Savita Maurya ◽  
Narendra Kumar Pandey ◽  
Vernica Verma
Keyword(s):  
Metal Oxide ◽  
Metal Oxides ◽  
Gas Sensor ◽  
Gas Sensors ◽  
Review Paper ◽  
Gas Sensing ◽  
Gas Sensitivity ◽  
Ammonia Gas ◽  
Ammonia Sensing ◽  
Ammonia Gas Sensors

: This review paper encompasses a study of metal-oxide and their composite based gas sensors used for the detection of ammonia (NH3) gas. Metal-oxide has come into view as an encouraging choice in the gas sensor industry. This review paper focuses on the ammonia sensing principle of the metal oxides. It also includes various approaches adopted for increasing the gas sensitivity of metal-oxide sensors. Increasing the sensitivity of the ammonia gas sensor includes size effects and doping by metal or other metal oxides which will change the microstructure and morphology of the metal oxides. Different parameters that affect the performances like sensitivity, stability, and selectivity of gas sensors are discussed in this paper. Performances of the most operated metal oxides with strengths and limitations in ammonia gas sensing application are reviewed. The challenges for the development of high sensitive and selective ammonia gas sensor are also discussed.

Sulfur Dioxide Sensors

2021 ◽  
Keyword(s):  
Ionic Liquids ◽  
Sulfur Dioxide ◽  
Metal Oxide ◽  
Gas Sensors ◽  
Optical Sensors ◽  
Recent Progress ◽  
Amperometric Sensors ◽  
Metal Oxide Sensors ◽  
Semiconducting Metal Oxide

Recent progress on the sensing and monitoring of sulfur dioxide in the environment is presented. The sensing materials covered include potentiometric gas sensors, amperometric sensors, optical sensors involving colorimetric and fluorescence changes, sensors based on ionic liquids, semiconducting metal-oxide sensors, photoacoustic detectors and biosensors.

scholarly journals On the Use of MOFs and ALD Layers as Nanomembranes for the Enhancement of Gas Sensors Selectivity

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1552 ◽  
Author(s):  
Weber ◽  
Graniel ◽  
Balme ◽  
Miele ◽  
Bechelany
Keyword(s):  
Thin Films ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Metal Organic Frameworks ◽  
Atomic Layer ◽  
Operational Performance ◽  
Layer Deposition ◽  
Metal Organic ◽  
Further Development ◽  
Different Gases

Improving the selectivity of gas sensors is crucial for their further development. One effective route to enhance this key property of sensors is the use of selective nanomembrane materials. This work aims to present how metal-organic frameworks (MOFs) and thin films prepared by atomic layer deposition (ALD) can be applied as nanomembranes to separate different gases, and hence improve the selectivity of gas sensing devices. First, the fundamentals of the mechanisms and configuration of gas sensors will be given. A selected list of studies will then be presented to illustrate how MOFs and ALD materials can be implemented as nanomembranes and how they can be implemented to improve the operational performance of gas sensing devices. This review comprehensively shows the benefits of these novel selective nanomaterials and opens prospects for the sensing community.

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