SnO2/MoO3-nanostructure and alcohol detection

Arbiol, Jordi; Morante, J.R.; Bouvier, Pierre; Pagnier, Thierry; Makeeva, E. A.; Rumyantseva, M. N.; Гаськов, А.М.

doi:10.1016/j.snb.2006.04.021

Cited by 42 publications

(13 citation statements)

References 22 publications

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“…These methods include sol-gel technique using codeposition of mixed oxides from corresponding salt solution (Arbiol, et al, 2006), aerosol spraying of salt solutions with subsequent heat treatment (Thangaraju, 2002), the deposition by reactive metal sputtering from composite targets in the presence of oxygen (Comini, et al, 2002;Nanto, et al, 1996), and the blending of individual metaloxide nanopowders (Yu & Choi, 1998). It should be noted that the structure of the nanocrystalline components in the composite may differ significantly from that of individual substances which form the base of the composite.…”

Section: Synthesis Of Metal Oxide Nanocompositesmentioning

confidence: 99%

Gas Semiconducting Sensors Based on Metal Oxide Nanocomposites

Трахтенберг¹,

Герасимов²,

Громов³

et al. 2012

JMSR

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This paper reviews the important problems associated with the synthesis of metal-oxide nanocomposites, charge transfer phenomena in these composites, their conductive and sensory properties, modeling of sensory effect and the role on this sensory effect of the electronic structure of the metal oxide. The size of metal particles and temperature significantly influence the efficiency of such systems. However, the electronic interactions between the different components of the nanocomposite films play the dominant role in the exploitation of the properties of such sensory systems. Depending on the chemical nature of the analyzed gas and the electronic structure of the semiconducting metal oxides, such interactions can result in either an increase or a decrease of the sensory effect. Thus, by varying the electronic structure of the metal oxide composite sensors as well as the temperature and size of the metal-oxide nanoparticles, the inherent characteristics of the sensor can be changed and tailored for detection of various gases. Such findings clearly open up new opportunities for development of novel selective sensors.

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Section: Synthesis Of Metal Oxide Nanocompositesmentioning

confidence: 99%

Gas Semiconducting Sensors Based on Metal Oxide Nanocomposites

Трахтенберг¹,

Герасимов²,

Громов³

et al. 2012

JMSR

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“…MoO 3 is n-type semiconductor that can change the acidity performances of SnO 2 surfaces against reactivity with different gases [11,12]. The introduction of 4 MoO 3 reduces the electrical conductivity of SnO 2 by two orders of magnitude in air, which may be due to the transfer of electrons trapped at oxygen vacancies to Mo 6+ [13].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and gas-sensing properties of nano- and meso-porous MoO3-doped SnO2

Firooz

Hyodo

Mahjoub

et al. 2010

Sensors and Actuators B: Chemical

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Nano-and meso-porous SnO 2 powders doped with and without 1~10 wt% MoO 3 have been synthesized by an ultrasonic spray-pyrolysis method employing a precursor aqueous solution containing tin (IV) chloride pantahydrate (SnCl 4 ·5H 2 O), ammonium heptamolybdate and polymethylmethacrylate (PMMA) microspheres as a template, and the effects of MoO 3 -doping and the addition of PMMA microspheres on the structural, morphological and gas-sensing properties of SnO 2 were investigated in this study. It is confirmed that control of the amounts of PMMA microspheres in the precursor solution was effective in realizing well-developed nano-and meso-porous structures of SnO 2 by X-ray diffraction analysis, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and the measurement of specific surface area and pore size distribution using a N 2 adsorption isotherm. Gas-sensing properties of their thick films (about 50 µm thick), which were fabricated by screen-printing to various gases (NO 2 , C 2 H 5 OH and H 2 ) were tested in ambient air. The doped thick films showed a high response and selectivity to 5 ppm NO 2 gas in the case of 10 wt% MoO 3 -doping in both nano-and meso-porous structures of SnO 2 . We observed that the presence of Mo species in SnO 2 lattice can improve the sensor response and selectivity towards NO 2 gas. The effect of the MoO 3 -doping on the sensing characteristics of these films towards NO 2 was discussed.

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“…Áûëè ïðîàíàëèçèðîâàíû ýêñïåðèìåíòàëü-íûå äàííûå ïî ÷óâñòâèòåëüíîñòè ñåíñîðîâ CO , NH 3 [7,11,[36][37][38][39][40] [13,23,26,28,30,32,36,40,50,[55][56][57][58][59][60][61][62][63][64][65]. Èç ïðèâåäåííûõ â ëèòåðàòóðíûõ èñòî÷íèêàõ çíà÷åíèé êîýôôèöèåíòà ÷óâñòâèòåëüíîñòè âûáèðàëèñü ìàêñèìàëüíûå çíà÷åíèÿ S k è ó÷è-òûâàëèñü ñîîòâåòñòâóþùèå èì çíà÷åíèÿ êîí-öåíòðàöèè ãàçà Ñ è ðàáî÷åé òåìïåðàòóðû.…”

Section: ìåòîäû èññëåäîâàíèÿunclassified

Analytical Investigations of Concentration Dependences of Gas Sensors Sensitivity

Petrov¹

2014

SEMST

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Àííîòàöèÿ ÀÍÀËÈÒÈ×ÅÑÊÎÅ ÈÑÑËÅÄÎÂÀÍÈÅ ÊÎÍÖÅÍÒÐÀÖÈÎÍÍÛÕ ÇÀÂÈÑÈÌÎÑÒÅÉ ×ÓÂÑÒÂÈÒÅËÜÍÎÑÒÈ ÑÅÍÑÎÐÎÂ ÃÀÇÀ Â. Â. ÏåòðîâÂ ðàáîòå ïðîâåäåí àíàëèç ëèòåðàòóðíûõ äàííûõ ïî ÷óâñòâèòåëüíîñòè ñåíñîðîâ ÑÎ, NH 3 , C 2 H 5 OH, H 2 S; è NO 2 , ðàáîòàþùèõ íà èçìåíåíèè ïîâåðõíîñòíîé ïðîâîäèìîñòè ãàçî÷óâñòâè-òåëüíûõ ìàòåðèàëîâ. Ìåòîäîì íàèìåíüøèõ êâàäðàòîâ ïîñòðîåíû ðåãðåññèîííûå çàâèñè-ìîñòè ÷óâñòâèòåëüíîñòè ñåíñîðà îò êîíöåíòðàöèè ãàçîâ, èìåþùèå âèä ñòåïåííîé ôóíêöèè. Ïîêàçàíî, ÷òî âåëè÷èíà ñòåïåíè m óêàçûâàåò íà ïðåèìóùåñòâåííûé ìåõàíèçì ïîâåðõíîñ-òíûõ ðåàêöèé, ïðîòåêàþùèõ ìåaeäó ìîëåêóëàìè ãàçà è ïîâåðõíîñòüþ ãàçî÷óâñòâèòåëüíîãî ìàòåðèàëà.Êëþ÷åâûå ñëîâà: ñåíñîð ãàçà, ÷óâñòâèòåëüíîñòü ñåíñîðà, ìåõàíèçì ïîâåðõíîñòíîé ðåàê-öèè, ðåãðåññèîííûé êîýôôèöèåíò Â. Â. ÏåòðîâÓ ðîáîò³ ïðîâåäåíî àíàë³ç ë³òåðàòóðíèõ äàíèõ ïî ÷óòëèâîñò³ ñåíñîð³â ÑÎ, NH 3 , C 2 H 5 OH, H 2 S; è NO 2 , ÿê³ ïðàöþþòü íà çì³í³ ïîâåðõíåâî¿ ïðîâ³äíîñò³ ãàçî÷óòëèâèõ ìàòåð³àë³â. Ìåòî-äîì íàéìåíøèõ êâàäðàò³â ïîáóäîâàí³ ðåãðåñ³éí³ çàëåaeíîñò³ ÷óòëèâîñò³ ñåíñîðà â³ä êîíöåí-òðàö³¿ ãàç³â, ùî ìàþòü âèä ñòåïåííî¿ ôóíêö³¿. Ïîêàçàíî, ùî âåëè÷èíà ñòåïåíÿ m âêàçóº íà ïåðåâàaeàþ÷èé ìåõàí³çì ïîâåðõíåâèõ ðåàêö³é, ùî ïðîò³êàþòü ì³ae ìîëåêóëàìè ãàçó ³ ïîâåð-õíåþ ãàçî÷óòëèâîãî ìàòåð³àëó.Êëþ÷îâ³ ñëîâà: ñåíñîð ãàçó, ÷óòëèâ³ñòü ñåíñîðà, ìåõàí³çì ïîâåðõíåâî¿ ðåàêö³¿, ðåãðåñ³é-íèé êîåô³ö³ºíò Â. Â. Ïåòðîâ

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SnO2/MoO3-nanostructure and alcohol detection

Cited by 42 publications

References 22 publications

Gas Semiconducting Sensors Based on Metal Oxide Nanocomposites

Gas Semiconducting Sensors Based on Metal Oxide Nanocomposites

Synthesis and gas-sensing properties of nano- and meso-porous MoO3-doped SnO2

Analytical Investigations of Concentration Dependences of Gas Sensors Sensitivity

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