LrgpV1, Main, Exploration, bibRecord, 001481

Macroscopic carbon nanofibers for use as photocatalyst support

Identifieur interne : 001481 ( Main/Exploration ); précédent : 001480; suivant : 001482

Macroscopic carbon nanofibers for use as photocatalyst support

Auteurs : Nicolas Keller [France] ; Guillaume Rebmann [France] ; Elodie Barraud [France] ; Orfan Zahraa [France] ; Valérie Keller [France]

Source :

Catalysis today [ 0920-5861 ] ; 2005.

RBID : Pascal:05-0291824

Descripteurs français

Pascal (Inist)
- Carbone, Photocatalyse, Support catalyseur, Catalyseur sur support, Catalyse hétérogène, Morphologie, Microstructure, Protection environnement, Rayonnement solaire, Nanofibre.
Wicri :
- topic : Carbone.

English descriptors

KwdEn :
- Carbon, Catalyst support, Environmental protection, Heterogeneous catalysis, Microstructure, Morphology, Photocatalysis, Solar radiation, Supported catalyst.

Abstract

To reduce the drawbacks related to the use of powders or immobilized catalysts in gas- and liquid-phase applications, a new material for the use as photocatalyst support was obtained by chemical vapor decomposition at 700 °C of an ethane-hydrogen mixture over a woven glass microfiber supported nickel catalyst, consequently leading to carbon nanofibers with macroscopic shaping, consisting in woven glass microfibers supporting a dense network of entangled 40 nm diameter carbon nanofibers. This material could be directly used after synthesis without any subsequent purification treatment due to the high yield and totally selective carbon nanofiber production. This shape memory design results in the direct use of the carbon nanofiber-woven glass microfiber composite as support without any post-synthesis shaping. The presence of hydrophilic oxygenated groups located at the outer surface of the carbon nanofibers allowed the sol-gel preparation of a woven glass microfiber-carbon nanofiber supported TiO2 (20 wt.%) catalyst, using tetraisopropoxide as precursor. This new photocatalyst was totally stable under UV irradiation.

Affiliations:

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

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to stream PascalFrancis, to step Curation: 000483
to stream PascalFrancis, to step Checkpoint: 000579
to stream Main, to step Merge: 001715
to stream Main, to step Curation: 001481

Le document en format XML

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<term>Microstructure</term>
<term>Morphology</term>
<term>Photocatalysis</term>
<term>Solar radiation</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Carbone</term>
<term>Photocatalyse</term>
<term>Support catalyseur</term>
<term>Catalyseur sur support</term>
<term>Catalyse hétérogène</term>
<term>Morphologie</term>
<term>Microstructure</term>
<term>Protection environnement</term>
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<front><div type="abstract" xml:lang="en">To reduce the drawbacks related to the use of powders or immobilized catalysts in gas- and liquid-phase applications, a new material for the use as photocatalyst support was obtained by chemical vapor decomposition at 700 °C of an ethane-hydrogen mixture over a woven glass microfiber supported nickel catalyst, consequently leading to carbon nanofibers with macroscopic shaping, consisting in woven glass microfibers supporting a dense network of entangled 40 nm diameter carbon nanofibers. This material could be directly used after synthesis without any subsequent purification treatment due to the high yield and totally selective carbon nanofiber production. This shape memory design results in the direct use of the carbon nanofiber-woven glass microfiber composite as support without any post-synthesis shaping. The presence of hydrophilic oxygenated groups located at the outer surface of the carbon nanofibers allowed the sol-gel preparation of a woven glass microfiber-carbon nanofiber supported TiO2 (20 wt.%) catalyst, using tetraisopropoxide as precursor. This new photocatalyst was totally stable under UV irradiation.</div>
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Macroscopic carbon nanofibers for use as photocatalyst support

Macroscopic carbon nanofibers for use as photocatalyst support

Source :

Descripteurs français

English descriptors

Abstract

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

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri