Relationship between Gas Sensitivity and Film Structure of SnO2Thin Film Gas Sensor by Sol-Gel Method

Gas sensor performance is strongly influenced by the crystal structure, composition and morphology of the material used. In this paper, structural and morphological analysis of nanocomposite SnO2-Graphene synthesized by Sol-Gel method with the composition of 1:1, 1:2, 1:3 will be described. Analysis of the morphology and structure of nanocomposite SnO2-Graphene is investigated using XRD, SEM and TEM with the purpose of obtaining the crystal structure, morphology, composition and size of the resulting particles. The XRD results showed that the formation of the crystalline phase can be recorded at 2θ = 26.64; 34.2; 51.92, where the results of SEM show that the nanomaterial SnO2 has tetragonal structure while the graphene has hexagonal structure. The nanocomposite SnO2-Graphene has nanorod pattern. Furthermore, the surface analysis using TEM of nanocomposite SnO2-Graphene shows that the surface has the rod diameter in the range of 5-8 nm. The unique nanopattern of SnO2-Graphene will have potential applicability as the sensing material for CO gas sensor.

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The highly sensitive NO2 gas sensor using ZnO nanorods grown by the sol-gel method

Journal of Sensor Science and Technology ◽

10.5369/jsst.2008.17.2.147 ◽

2008 ◽

Vol 17 (2) ◽

pp. 147-150 ◽

Cited By ~ 1

Author(s):

S.J. Park ◽

J.H. Kwak ◽

J. Park ◽

H.Y. Lee ◽

S.E. Moon ◽

...

Keyword(s):

Gas Sensor ◽

Sol Gel ◽

Zno Nanorods ◽

Gel Method ◽

Sol Gel Method ◽

No2 Gas Sensor ◽

Highly Sensitive

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Study of the electrophysical and gas-sensitive properties of thin ZnO-SnO2 films formed by the sol-gel method

Journal of Physics Conference Series ◽

10.1088/1742-6596/2103/1/012132 ◽

2021 ◽

Vol 2103 (1) ◽

pp. 012132

Author(s):

A P Starnikova ◽

I A Gulyaeva ◽

V Yu Storozhenko ◽

M G Volkova ◽

E M Bayan ◽

...

Keyword(s):

Thin Films ◽

Activation Energy ◽

Sol Gel ◽

Sensitivity Coefficient ◽

Molar Ratio ◽

Gas Sensitivity ◽

Gel Method ◽

Sol Gel Method ◽

Working Temperature ◽

Low Concentrations

Abstract Thin films of ZnO-SnO2, with a molar ratio of Zn: Sn = 0:100, 1:99, and 5:95, were synthesized by the sol-gel method. As a result of a study of the electrophysical and gas-sensitive properties of thin ZnO-SnO2 films, the effect of a decrease in the working temperature at low concentrations of zinc oxide was found. The value of the coefficient of gas sensitivity of ZnO-SnO2 films correlates with the activation energy of conduction. For sensor structures based on films with a composition of: 5:95 at a working temperature of 200 °C, a higher gas sensitivity coefficient and the fastest response among all the samples under study are observed.

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Synthesis of Copper Titanate Nanocomposite via Sol–Gel Method and Its Application as Liquefied Petroleum Gas Sensor

Advanced Science Letters ◽

10.1166/asl.2014.5491 ◽

2014 ◽

Vol 20 (5) ◽

pp. 933-938

Author(s):

Nidhi Verma ◽

B. C. Yadav

Keyword(s):

Gas Sensor ◽

Sol Gel ◽

Liquefied Petroleum Gas ◽

Gel Method ◽

Sol Gel Method

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WO3 nanomaterials synthesized via a sol-gel method and calcination for use as a CO gas sensor

Frontiers of Chemical Science and Engineering ◽

10.1007/s11705-014-1431-0 ◽

2014 ◽

Vol 8 (2) ◽

pp. 179-187 ◽

Cited By ~ 16

Author(s):

Diah Susanti ◽

A. A. Gede Pradnyana Diputra ◽

Lucky Tananta ◽

Hariyati Purwaningsih ◽

George Endri Kusuma ◽

...

Keyword(s):

Gas Sensor ◽

Sol Gel ◽

Gel Method ◽

Sol Gel Method ◽

Co Gas Sensor ◽

Co Gas

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Application of Sol-Gel Method as a Protective Layer on a Specular Reflective Surface for Secondary Reflector in a Solar Receiver

Volume 1: Biofuels, Hydrogen, Syngas, and Alternate Fuels; CHP and Hybrid Power and Energy Systems; Concentrating Solar Power; Energy Storage; Environmental, Economic, and Policy Considerations of Advanced Energy Systems; Geothermal, Ocean, and Emerging Energy Technologies; Photovoltaics; Posters; Solar Chemistry; Sustainable Building Energy Systems; Sustainable Infrastructure and Transportation; Thermodynamic Analysis of Energy Systems; Wind Energy Systems and Technologies ◽

10.1115/es2016-59046 ◽

2016 ◽

Author(s):

Samia Afrin ◽

John Dagdelen ◽

Zhiwen Ma ◽

Vinod Kumar

Keyword(s):

Optical Properties ◽

High Temperature ◽

High Efficiency ◽

Elevated Temperatures ◽

Sol Gel ◽

Film Structure ◽

Gel Method ◽

Sol Gel Method ◽

Reflective Surface ◽

Solar Receiver

Highly-specular reflective surfaces that can withstand elevated-temperatures are desirable for many applications including reflective heat shielding in solar receivers and secondary reflectors, which can be used between primary concentrators and heat collectors. A high-efficiency, high-temperature solar receiver design based on arrays of cavities needs a highly-specular reflective surface on its front section to help sunlight penetrate into the absorber tubes for effective flux spreading. Since this application is for high-temperature solar receivers, this surface needs to be durable and to maintain its optical properties through the usable life. Degradation mechanisms associated with elevated temperatures and thermal cycling, which include cracking, delamination, corrosion/oxidation, and environmental effects, could cause the optical properties of surfaces to degrade rapidly in these conditions. Protected mirror surfaces for these applications have been tested by depositing a thin layer of SiO2 on top of electrodeposited silver by means of the sol-gel method. To obtain an effective thin film structure, this sol-gel procedure has been investigated extensively by varying process parameters that affect film porosity and thickness. Endurance tests have been performed in a furnace at 150°C for thousands of hours. This paper presents the sol-gel process for intermediate-temperature specular reflective coatings and provides the long-term reliability test results of sol-gel protected silver-coated surfaces.

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