scholarly journals A stable and highly sensitive room-temperature liquefied petroleum gas sensor based on nano-cubes/cuboids of zinc antimonate

RSC Advances ◽  
2020 ◽  
Vol 10 (34) ◽  
pp. 20349-20357 ◽  
Author(s):  
Satyendra Singh ◽  
Archana Singh ◽  
Ajendra Singh ◽  
Poonam Tandon
Keyword(s):  
Gas Sensor ◽  
Room Temperature ◽  
Liquefied Petroleum Gas ◽  
Sensing Material ◽  
Highly Sensitive ◽  
Lpg Sensing

A new direction was explored using nanostructured zinc antimonate as a stable and highly sensitive LPG sensing material.

An efficient room-temperature liquefied petroleum gas sensor based on trirutile copper antimonate nano-polygons

2020 ◽  
Vol 44 (28) ◽  
pp. 11949-11958 ◽  
Author(s):  
Satyendra Singh ◽  
Archana Singh ◽  
Ajendra Singh ◽  
Poonam Tandon
Keyword(s):  
Gas Sensor ◽  
Room Temperature ◽  
Liquefied Petroleum Gas ◽  
Sensing Material ◽  
Lpg Sensing

A new direction to copper antimonate nano-polygons as an efficient LPG sensing material.

scholarly journals Graphene derivative coated QCM-based gas sensor for volatile organic compound (VOC) detection at room temperature

2020 ◽  
Vol 18 (3) ◽  
pp. 1279
Author(s):  
Monika Gupta ◽  
Nurul Athirah ◽  
Huzein Fahmi Hawari
Keyword(s):  
Gas Sensor ◽  
Room Temperature ◽  
Building Materials ◽  
High Mobility ◽  
Fossil Fuel Burning ◽  
Sensing Material ◽  
Highly Sensitive ◽  
Volatile Organic ◽  
Response And Recovery ◽  
Hall Effect Measurements

<span>Volatile organic compounds (VOCs) affect our daily life through their emission from very common sources such as plants, building materials, paints, pesticides, and fossil fuel burning. The detection of VOCs at room temperature is a prime requirement. The graphene-based gas sensor has the potential to detect these VOC gases due to its attractive features such as high mobility and large surface area. In this work, a graphene-derivative is prepared as a sensing material in order to detect acetone. The thin film of graphene-derivative is prepared by a drop-cast method on a quartz crystal microbalance (QCM) sensor followed by drying in the room environment conditions. The prepared graphene-derivative and thin films are characterized structurally and morphologically by standard microscopic techniques such as FESEM, EDX, and Raman spectroscopy. The electrical parameters such as mobility and resistivity are measured using Hall-effect measurements at room temperature. The response and recovery time of the graphene-derivative based 10 MHz QCM sensor are found to be 23 s and 20 s, respectively. This highly sensitive graphene-based gas sensor with good reversibility can be employed for human health and environment safety applications. </span>

scholarly journals A Novel Type Room Temperature Surface Photovoltage Gas Sensor Device

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 2919 ◽  
Author(s):  
Monika Kwoka ◽  
Michal Borysiewicz ◽  
Pawel Tomkiewicz ◽  
Anna Piotrowska ◽  
Jacek Szuber
Keyword(s):  
Gas Sensor ◽  
Room Temperature ◽  
Gas Sensing ◽  
Signal To Noise Ratio ◽  
Fast Response ◽  
Surface Photovoltage ◽  
Kelvin Probe ◽  
Sensor Device ◽  
Sensing Material ◽  
Highly Sensitive

In this paper a novel type of a highly sensitive gas sensor device based on the surface photovoltage effect is described. It is based on the Kelvin probe approach. Porous ZnO nanostructured thin films deposited by the direct current (DC) reactive magnetron sputtering method are used as the active gas sensing electrode material. Crucially, the obtained gas sensing material exhibited a nanocoral surface morphology and surface Zn to O non-stoichiometry with respect to its bulk mass. Among other responses, the demonstrated SPV gas sensor device exhibits a high response to an NO2 concentration as low as 1 ppm, with a signal to noise ratio of about 50 and a fast response time of several seconds under room temperature conditions.

scholarly journals Gold and ZnO-Based Metal-Semiconductor Network for Highly Sensitive Room-Temperature Gas Sensing

Sensors ◽  
2019 ◽  
Vol 19 (18) ◽  
pp. 3815
Author(s):  
Renyun Zhang ◽  
Magnus Hummelgård ◽  
Joel Ljunggren ◽  
Håkan Olin
Keyword(s):  
Solar Cells ◽  
Gas Sensor ◽  
Network Structure ◽  
Room Temperature ◽  
Gas Sensing ◽  
Zno Nanowires ◽  
Gold Particles ◽  
Highly Sensitive ◽  
Semiconductor Electronics ◽  
New Type

Metal-semiconductor junctions and interfaces have been studied for many years due to their importance in applications such as semiconductor electronics and solar cells. However, semiconductor-metal networks are less studied because there is a lack of effective methods to fabricate such structures. Here, we report a novel Au–ZnO-based metal-semiconductor (M-S)n network in which ZnO nanowires were grown horizontally on gold particles and extended to reach the neighboring particles, forming an (M-S)n network. The (M-S)n network was further used as a gas sensor for sensing ethanol and acetone gases. The results show that the (M-S)n network is sensitive to ethanol (28.1 ppm) and acetone (22.3 ppm) gases and has the capacity to recognize the two gases based on differences in the saturation time. This study provides a method for producing a new type of metal-semiconductor network structure and demonstrates its application in gas sensing.

Highly sensitive thin film NH3 gas sensor operating at room temperature based on SnO2/MWCNTs composite

2008 ◽  
Vol 129 (2) ◽  
pp. 888-895 ◽  
Author(s):  
Nguyen Van Hieu ◽  
Luong Thi Bich Thuy ◽  
Nguyen Duc Chien
Keyword(s):  
Thin Film ◽  
Gas Sensor ◽  
Room Temperature ◽  
Highly Sensitive
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