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Pd nanoparticles on SnO2(Sb) whiskers: Aggregation and reactivity in CO detection

Identifieur interne : 000754 ( Main/Repository ); précédent : 000753; suivant : 000755

Pd nanoparticles on SnO2(Sb) whiskers: Aggregation and reactivity in CO detection

Auteurs : RBID : Pascal:13-0205060

Descripteurs français

Pascal (Inist)
- Palladium, Nanomatériau, Agrégation, Addition antimoine, Addition indium, Mécanisme croissance, Microscopie force atomique, Microscopie électronique balayage transmission, Précurseur, Méthode croissance Stranski-Krastanov, Synthèse nanomatériau, Capteur de gaz, Effet concentration, Dimension particule, Nanoparticule, Trichite, Monocristal, Substrat SnO2, SnO2, 8107, 8110A, 8116, 0707D.

English descriptors

KwdEn :
- Aggregation, Antimony additions, Atomic force microscopy, Gas sensors, Growth mechanism, Indium additions, Monocrystals, Nanomaterial synthesis, Nanoparticles, Nanostructured materials, Palladium, Particle size, Precursor, Quantity ratio, Scanning transmission electron microscopy, Stranski-Krastanov growth method, Whiskers.

Abstract

Single crystal antimony-doped SnO₂ whiskers have been synthesized by in situ doping process in horizontal flow reactor. The produced whiskers were modified with 0.1, 0.2, 0.5, 1 or 2 wt.% Pd. The processes of Pd particles growth and aggregation are described on the base of AFM and STEM data. Depending on the content of introduced Pd precursor, the various mechanisms (Volmer-Weber or Stranski-Krastanov) of Pd nanoparticles growth realize. The dependence of sensor signal to CO on Pd concentration has non-monotonous character determined by the size of Pd nanoparticles and their aggregation degree. The best sensor signal toward CO was observed for whiskers decorated with 0.1 wt.% Pd. This concentration corresponds to the presence of individual 3-5 nm Pd nanoparticles on the surface of the whiskers.

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Pascal:13-0205060

Le document en format XML

<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Pd nanoparticles on SnO<sub>2</sub>
(Sb) whiskers: Aggregation and reactivity in CO detection</title>
<author><name sortKey="Zhukova, A A" uniqKey="Zhukova A">A. A. Zhukova</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Chemistry Department, Moscow State University</s1>
<s2>119991 Moscow</s2>
<s3>RUS</s3>
<sZ>1 aut.</sZ>
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<sZ>6 aut.</sZ>
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<country>Russie</country>
<placeName><settlement type="city">Moscou</settlement>
<region>District fédéral central</region>
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<author><name sortKey="Rumyantseva, M N" uniqKey="Rumyantseva M">M. N. Rumyantseva</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Chemistry Department, Moscow State University</s1>
<s2>119991 Moscow</s2>
<s3>RUS</s3>
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<sZ>2 aut.</sZ>
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<country>Russie</country>
<placeName><settlement type="city">Moscou</settlement>
<region>District fédéral central</region>
</placeName>
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</author>
<author><name sortKey="Zaytsev, V B" uniqKey="Zaytsev V">V. B. Zaytsev</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Faculty of Physics, Moscow State University</s1>
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<country>Russie</country>
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<author><name sortKey="Zaytseva, A V" uniqKey="Zaytseva A">A. V. Zaytseva</name>
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<author><name sortKey="Abakumov, A M" uniqKey="Abakumov A">A. M. Abakumov</name>
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<country>Belgique</country>
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<author><name sortKey="Gaskov, A M" uniqKey="Gaskov A">A. M. Gaskov</name>
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<country>Russie</country>
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<publicationStmt><idno type="inist">13-0205060</idno>
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<title level="j" type="abbreviated">J. alloys compd.</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aggregation</term>
<term>Antimony additions</term>
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<term>Monocrystals</term>
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<term>Nanoparticles</term>
<term>Nanostructured materials</term>
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<term>Particle size</term>
<term>Precursor</term>
<term>Quantity ratio</term>
<term>Scanning transmission electron microscopy</term>
<term>Stranski-Krastanov growth method</term>
<term>Whiskers</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Palladium</term>
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<term>Capteur de gaz</term>
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<term>Trichite</term>
<term>Monocristal</term>
<term>Substrat SnO2</term>
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<term>8107</term>
<term>8110A</term>
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<front><div type="abstract" xml:lang="en">Single crystal antimony-doped SnO<sub>2</sub>
 whiskers have been synthesized by in situ doping process in horizontal flow reactor. The produced whiskers were modified with 0.1, 0.2, 0.5, 1 or 2 wt.% Pd. The processes of Pd particles growth and aggregation are described on the base of AFM and STEM data. Depending on the content of introduced Pd precursor, the various mechanisms (Volmer-Weber or Stranski-Krastanov) of Pd nanoparticles growth realize. The dependence of sensor signal to CO on Pd concentration has non-monotonous character determined by the size of Pd nanoparticles and their aggregation degree. The best sensor signal toward CO was observed for whiskers decorated with 0.1 wt.% Pd. This concentration corresponds to the presence of individual 3-5 nm Pd nanoparticles on the surface of the whiskers.</div>
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 whiskers have been synthesized by in situ doping process in horizontal flow reactor. The produced whiskers were modified with 0.1, 0.2, 0.5, 1 or 2 wt.% Pd. The processes of Pd particles growth and aggregation are described on the base of AFM and STEM data. Depending on the content of introduced Pd precursor, the various mechanisms (Volmer-Weber or Stranski-Krastanov) of Pd nanoparticles growth realize. The dependence of sensor signal to CO on Pd concentration has non-monotonous character determined by the size of Pd nanoparticles and their aggregation degree. The best sensor signal toward CO was observed for whiskers decorated with 0.1 wt.% Pd. This concentration corresponds to the presence of individual 3-5 nm Pd nanoparticles on the surface of the whiskers.</s0>
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Pd nanoparticles on SnO2(Sb) whiskers: Aggregation and reactivity in CO detection

Pd nanoparticles on SnO2(Sb) whiskers: Aggregation and reactivity in CO detection

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

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