In situ laser-induced synthesis of gas sensing microcomposites based on molybdenum and its oxides

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Abstract

In the current paper, in situ laser-induced synthesis of gas sensing microcomposites based on molybdenum and its oxides is discussed. The influence of pH of the solutions used for deposition and optical characteristics of a dielectric substrate on electrical conductivity and sensor properties of the synthesized microdeposits is also studied. It was shown that the phase distribution in the obtained materials is consistent with temperature level in the thermal zones of the laser beam focused on the surface of a dielectric substrate of different type. In turn, highly developed surface area of these microsensors is directly responsible for their high sensitivity, short response time, and low temperature of regeneration with respect to hydrogen sulfide and ammonia. Indeed, the highest sensitivity was observed for detection of small concentration (≤50 ppm) of hydrogen sulfide at temperatures of 300–350 °C, whereas at temperatures of 300 °C or less, the deposited molybdenum-containing microstructures are applicable for the ammonia sensing. Thus, this work demonstrates that the method of laser-induced metal deposition is a promising and perspective approach for fabrication of new effective standalone micro-sized gas sensors.

LanguageEnglish
Pages322-330
Number of pages9
JournalComposites Part B: Engineering
Volume157
DOIs
StatePublished - 15 Jan 2019

Keywords

  • Ammonia
  • Gas sensors
  • Hydrogen sulfide
  • Laser-induced metal synthesis
  • Molybdenum
  • Semiconductor

Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

Cite this

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title = "In situ laser-induced synthesis of gas sensing microcomposites based on molybdenum and its oxides",
abstract = "In the current paper, in situ laser-induced synthesis of gas sensing microcomposites based on molybdenum and its oxides is discussed. The influence of pH of the solutions used for deposition and optical characteristics of a dielectric substrate on electrical conductivity and sensor properties of the synthesized microdeposits is also studied. It was shown that the phase distribution in the obtained materials is consistent with temperature level in the thermal zones of the laser beam focused on the surface of a dielectric substrate of different type. In turn, highly developed surface area of these microsensors is directly responsible for their high sensitivity, short response time, and low temperature of regeneration with respect to hydrogen sulfide and ammonia. Indeed, the highest sensitivity was observed for detection of small concentration (≤50 ppm) of hydrogen sulfide at temperatures of 300–350 °C, whereas at temperatures of 300 °C or less, the deposited molybdenum-containing microstructures are applicable for the ammonia sensing. Thus, this work demonstrates that the method of laser-induced metal deposition is a promising and perspective approach for fabrication of new effective standalone micro-sized gas sensors.",
keywords = "Ammonia, Gas sensors, Hydrogen sulfide, Laser-induced metal synthesis, Molybdenum, Semiconductor",
author = "Baranauskaite, {Valeriia E.} and Novomlinskii, {Maxim O.} and Tumkin, {Ilya I.} and Khairullina, {Evgeniia M.} and Mereshchenko, {Andrey S.} and Balova, {Irina A.} and Panov, {Maxim S.} and Kochemirovsky, {Vladimir A.}",
year = "2019",
month = "1",
day = "15",
doi = "10.1016/j.compositesb.2018.08.008",
language = "English",
volume = "157",
pages = "322--330",
journal = "Composites Part B: Engineering",
issn = "1359-8368",
publisher = "Elsevier",

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TY - JOUR

T1 - In situ laser-induced synthesis of gas sensing microcomposites based on molybdenum and its oxides

AU - Baranauskaite, Valeriia E.

AU - Novomlinskii, Maxim O.

AU - Tumkin, Ilya I.

AU - Khairullina, Evgeniia M.

AU - Mereshchenko, Andrey S.

AU - Balova, Irina A.

AU - Panov, Maxim S.

AU - Kochemirovsky, Vladimir A.

PY - 2019/1/15

Y1 - 2019/1/15

N2 - In the current paper, in situ laser-induced synthesis of gas sensing microcomposites based on molybdenum and its oxides is discussed. The influence of pH of the solutions used for deposition and optical characteristics of a dielectric substrate on electrical conductivity and sensor properties of the synthesized microdeposits is also studied. It was shown that the phase distribution in the obtained materials is consistent with temperature level in the thermal zones of the laser beam focused on the surface of a dielectric substrate of different type. In turn, highly developed surface area of these microsensors is directly responsible for their high sensitivity, short response time, and low temperature of regeneration with respect to hydrogen sulfide and ammonia. Indeed, the highest sensitivity was observed for detection of small concentration (≤50 ppm) of hydrogen sulfide at temperatures of 300–350 °C, whereas at temperatures of 300 °C or less, the deposited molybdenum-containing microstructures are applicable for the ammonia sensing. Thus, this work demonstrates that the method of laser-induced metal deposition is a promising and perspective approach for fabrication of new effective standalone micro-sized gas sensors.

AB - In the current paper, in situ laser-induced synthesis of gas sensing microcomposites based on molybdenum and its oxides is discussed. The influence of pH of the solutions used for deposition and optical characteristics of a dielectric substrate on electrical conductivity and sensor properties of the synthesized microdeposits is also studied. It was shown that the phase distribution in the obtained materials is consistent with temperature level in the thermal zones of the laser beam focused on the surface of a dielectric substrate of different type. In turn, highly developed surface area of these microsensors is directly responsible for their high sensitivity, short response time, and low temperature of regeneration with respect to hydrogen sulfide and ammonia. Indeed, the highest sensitivity was observed for detection of small concentration (≤50 ppm) of hydrogen sulfide at temperatures of 300–350 °C, whereas at temperatures of 300 °C or less, the deposited molybdenum-containing microstructures are applicable for the ammonia sensing. Thus, this work demonstrates that the method of laser-induced metal deposition is a promising and perspective approach for fabrication of new effective standalone micro-sized gas sensors.

KW - Ammonia

KW - Gas sensors

KW - Hydrogen sulfide

KW - Laser-induced metal synthesis

KW - Molybdenum

KW - Semiconductor

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