A novel CeO2 Hollow-Shell sensor constructed for high sensitivity of acetone gas detection

Abstract Metal oxide semiconductors have been widely used in the eld of gas sensor study. Various researches are being done to improve the sensitivity of the sensing material for applications like breath analyzers. In this work, a theoretical investigation and analysis of the n- type metal oxide for Acetone gas detection are carried out. The rate of change of resistance of the sensing material with respect to the change in the concentration of the target gas is analyzed. Acetone being a reducing gas the resistance was found to decrease for n-type material. The simulations were done using COMSOL Multiphysics and results showed that the resistance of the sensing layer varies with the concentration of the target gas. Also, the performance analysis of sensors has been compared with the experimental results. Further, we have also derived a mathematical expression connecting the relationship between the concentration of gas and the rate of change of resistance. The resistance change is observed to be proportional to the target gas concentration. A signal conditioning circuit was also designed for providing a user-friendly interface for monitoring the gas concentration. The simulation of the signal conditioning circuit was done using Proteus Design Suite. This work will aid researchers to define and predict the behaviour of gas sensors.

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High Sensitivity Ammonia Gas Detection with Hollow-Core Photonic Bandgap Fibers Reference Gas Cavity

Chinese Journal of Lasers ◽

10.3788/cjl201643.0305001 ◽

2016 ◽

Vol 43 (3) ◽

pp. 0305001

Author(s):

冯巧玲 Feng Qiaoling ◽

姜萌 Jiang Meng ◽

王学锋 Wang Xuefeng ◽

梁鹄 Liang Hu ◽

王聪颖 Wang Congying ◽

...

Keyword(s):

Photonic Bandgap ◽

High Sensitivity ◽

Gas Detection ◽

Hollow Core ◽

Ammonia Gas ◽

Photonic Bandgap Fibers ◽

Gas Cavity

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High-sensitivity long-period fiber grating sensor with SAN/cryptophane A for coal mine gas detection

Chinese Optics Letters ◽

10.3788/col201311.080601 ◽

2013 ◽

Vol 11 (8) ◽

pp. 080601-80604 ◽

Cited By ~ 4

Author(s):

Jianchun Yang Jianchun Yang ◽

Jing Huang Jing Huang ◽

Xueming Li Xueming Li ◽

Shanya Li Shanya Li ◽

Binbin Luo Binbin Luo ◽

...

Keyword(s):

Coal Mine ◽

High Sensitivity ◽

Gas Detection ◽

Fiber Grating ◽

Long Period Fiber Grating ◽

Long Period ◽

Coal Mine Gas ◽

Fiber Grating Sensor ◽

Mine Gas ◽

Period Fiber Grating

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Advances in chemiresistive sensors for acetone gas detection

Materials Science in Semiconductor Processing ◽

10.1016/j.mssp.2019.104616 ◽

2019 ◽

Vol 103 ◽

pp. 104616 ◽

Cited By ~ 22

Author(s):

Aainaa Aqilah Baharuddin ◽

Bee Chin Ang ◽

A.S.M.A. Haseeb ◽

Yung Cheng Wong ◽

Yew Hoong Wong

Keyword(s):

Gas Detection ◽

Acetone Gas Detection

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Constructing one dimensional Co3O4 hierarchical nanofibers as efficient sensing materials for rapid acetone gas detection

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2019.05.356 ◽

2019 ◽

Vol 799 ◽

pp. 513-520 ◽

Cited By ~ 11

Author(s):

Jing Cao ◽

Shuangming Wang ◽

Haiming Zhang ◽

Tong Zhang

Keyword(s):

Gas Detection ◽

One Dimensional ◽

Acetone Gas Detection

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Ammonia Gas Detection by Tannic Acid Functionalized and Reduced Graphene Oxide at Room Temperature

Journal of Nanomaterials ◽

10.1155/2014/497384 ◽

2014 ◽

Vol 2014 ◽

pp. 1-6 ◽

Cited By ~ 40

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.

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