Microhotplate catalytic sensors based on porous anodic alumina: Operando study of methane response hysteresis

Roslyakov, Ilya V.; Kolesnik, Irina V.; Евдокимов, П. В.; Skryabina, O. V.; Гаршев, А.В.; Миронов, С. М.; Stolyarov, V. S.; Baranchikov, А. Е.; Napolskii, K. S.

doi:10.1016/j.snb.2020.129307

Cited by 21 publications

(18 citation statements)

References 24 publications

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“…The spontaneously emerging structure can be improved with the help of more [3] or less [4,5] complex techniques, which also make it possible to form PAFs with unusual morphology [6]. Thanks to its "technological plasticity" and the relative simplicity of formation, porous alumina is a promising material for a wide range of applications, such as an electronic product elemental base [7][8][9][10][11], or in various types of sensors and detectors [12][13][14][15][16]. A currently rapidly developing field is the creation of nanoscale structures and composite materials using porous anodic aluminum oxide as a highly ordered nanostructured matrix for the formation of various kinds of functional materials and devices [17][18][19][20][21][22][23][24][25][26], including nanostructures such as carbon nanotubes, nanodiamonds, and graphene [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Porous Alumina Films Fabricated by Reduced Temperature Sulfuric Acid Anodizing: Morphology, Composition and Volumetric Growth

et al. 2021

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The volumetric growth, composition, and morphology of porous alumina films fabricated by reduced temperature 280 K galvanostatic anodizing of aluminum foil in 0.4, 1.0, and 2.0 M aqueous sulfuric acid with 0.5–10 mA·cm−2 current densities were investigated. It appeared that an increase in the solution concentration from 0.4 to 2 M has no significant effect on the anodizing rate, but leads to an increase in the porous alumina film growth. The volumetric growth coefficient increases from 1.26 to 1.67 with increasing current density from 0.5 to 10 mA·cm−2 and decreases with increasing solution concentration from 0.4 to 2.0 M. In addition, in the anodized samples, metallic aluminum phases are identified, and a tendency towards a decrease in the aluminum content with an increase in solution concentration is observed. Anodizing at 0.5 mA·cm−2 in 2.0 M sulfuric acid leads to formation of a non-typical nanostructured porous alumina film, consisting of ordered hemispheres containing radially diverging pores.

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Section: Introductionmentioning

confidence: 99%

Porous Alumina Films Fabricated by Reduced Temperature Sulfuric Acid Anodizing: Morphology, Composition and Volumetric Growth

et al. 2021

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“…6(b)] spread on the base layer (or membrane) using thick-or thin-film technology. (19,(68)(69)(70) Roslyakov et al proposed to use a membrane made of porous anodic aluminum oxide films (AAO), on which a platinum microheater is applied. (68) To ensure catalytic activity, bimetallic Pd-Pt catalytic nanoparticles were successfully embedded inside AAO channels.…”

Section: Catalytic Sensorsmentioning

confidence: 99%

“…(19,(68)(69)(70) Roslyakov et al proposed to use a membrane made of porous anodic aluminum oxide films (AAO), on which a platinum microheater is applied. (68) To ensure catalytic activity, bimetallic Pd-Pt catalytic nanoparticles were successfully embedded inside AAO channels. This result demonstrated the applicability of micro-hotplate catalytic sensors based on porous anodic alumina supports for methane detection.…”

Section: Catalytic Sensorsmentioning

confidence: 99%

Latest Progress in Sensors for Pre-explosive Detection of Flammable Gases: A Review

Baranov¹,

Osipova²

2022

Sensors and Materials

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In this paper, we present a brief review of current trends in the development of technologies for manufacturing sensors of flammable gases and volatile organic compounds at pre-explosive concentrations. Different types of gas sensor, including catalytic, semiconductor, and optical sensors, and the principles of their operation are discussed. The advantages and disadvantages of each type of gas sensor are shown. New and traditional production technologies of sensitive elements are discussed, providing improvements of sensor parameters such as effectiveness, miniaturization, and reduction of energy consumption. In conclusion, we suggest future trends and prospects for research and development to increase the sensitivity and selectivity of sensors.

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“…In addition, the multicomponent nanostructured active layers deposited on a nanoporous template improve the selectivity of the sensors towards gases with complex composition and their mixtures [ 34 , 35 , 36 , 37 ]. The effective use of anodic alumina as a thin film platform to create sensors for various purposes has been reported by many authors in the literature [ 38 , 39 , 40 ].…”

Section: Introductionmentioning

confidence: 99%

A Micropowered Chemoresistive Sensor Based on a Thin Alumina Nanoporous Membrane and SnxBikMoyOz Nanocomposite

Gorokh

Zakhlebayeva

Таратын

et al. 2022

Sensors

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This work presents and discusses the design of an efficient gas sensor, as well as the technological process of its fabrication. The optimal dimensions of the different sensor elements including their deformation were determined considering the geometric modeling and the calculated moduli of the elasticity and thermal conductivity coefficients. Multicomponent SnxBikMoyOz thin films were prepared by ionic layering on an anodic alumina membrane and were used as gas-sensitive layers in the sensor design. The resistance of the SnxBikMoyOz nanostructured film at temperatures up to 150 °C exceeded 106 Ohm but decreased to 104 Ohm at 550 °C in air. The sensitivity of the SnxBikMoyOz composite to concentrations of 5 and 40 ppm H2 at 250 °C (10 mW) was determined to be 0.22 and 0.40, respectively.

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Microhotplate catalytic sensors based on porous anodic alumina: Operando study of methane response hysteresis

Cited by 21 publications

References 24 publications

Porous Alumina Films Fabricated by Reduced Temperature Sulfuric Acid Anodizing: Morphology, Composition and Volumetric Growth

Porous Alumina Films Fabricated by Reduced Temperature Sulfuric Acid Anodizing: Morphology, Composition and Volumetric Growth

Latest Progress in Sensors for Pre-explosive Detection of Flammable Gases: A Review

A Micropowered Chemoresistive Sensor Based on a Thin Alumina Nanoporous Membrane and SnxBikMoyOz Nanocomposite

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