NickelMaghrebV1, Main, Exploration, bibRecord, 000270

Photocatalytic hydrogen production over NiO modified silica under visible light irradiation

Identifieur interne : 000270 ( Main/Exploration ); précédent : 000269; suivant : 000271

Photocatalytic hydrogen production over NiO modified silica under visible light irradiation

Auteurs : S. Boumaza [Algérie] ; A. Belhadi [Algérie] ; M. Doulache [Algérie] ; M. Trari [Algérie]

Source :

International journal of hydrogen energy [ 0360-3199 ] ; 2012.

RBID : Pascal:13-0006349

Descripteurs français

Pascal (Inist)
- Photocatalyse, Production hydrogène, Oxyde de nickel, Silice, Hydrogène, Diffractométrie RX, Mesure, Aire superficielle, Spectrométrie impédance électrochimique, Sensibilisateur, Performance, Catalyseur, pH, Rendement, Accumulation énergie.
Wicri :
- topic : Hydrogène.

English descriptors

KwdEn :
- Catalyst, Electrochemical impedance spectroscopy, Energy storage, Hydrogen, Hydrogen production, Measurement, Nickel oxide, Performance, Photocatalysis, Sensitizer, Silica, Surface area, X ray diffractometry, Yield, pH.

Abstract

The novel hetero-system xNiO/SiO₂ (x = 0, 4 and 10%), prepared by impregnation/calcination, is assessed photoelectrochemically for the hydrogen evolution upon visible light. The X ray diffraction show mixed phases with a good crystallinity of NiO, spread uniformly over amorphous silica. The BET measurements give a specific surface area of ∼112 m² g^-1 for loaded compounds. The optical properties show strong light absorption of wavelengths shorter than 860 nm. The Mott-Schottky characteristic (C^-2-V) of NiO exhibits a positive slope, characteristic of n-type conductivity. The flat band potential (-0.93 V_SCE) is more cathodic than the water reduction level, thus allowing a spontaneous H₂ evolution. The electrochemical impedance spectroscopy reveals the predominance of the diffusion of finite length type and the Nyquist response is decomposed on R-C parallel circuit. NiO plays a key role as sensitizer and the photoactivity increases with increasing its loading. The best performance (0.2 cm³ H₂ (g catalyst)^-1 mn^-1) occurs for 10% NiO at pH ∼ 13.1 with a light-to-chemical energy yield of 0.19% in presence of SO^2-₃ as hole scavenger. On the other hand, the decomposition of S₂O²₃ is an energy storing process that could be a source of hydrogen from the solar light and the hetero-system is evaluated for the chemical energy storage through the photosynthetic reaction: (S₂O^2-₃ + H₂O + 2OH →2SO^2-₃ + 2H₂, ΔG_f° = 101.04 kJ mol^-1).

Affiliations:

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

to stream PascalFrancis, to step Corpus: 000072
to stream PascalFrancis, to step Curation: 000369
to stream PascalFrancis, to step Checkpoint: 000079
to stream Main, to step Merge: 000276
to stream Main, to step Curation: 000270

Le document en format XML

<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Photocatalytic hydrogen production over NiO modified silica under visible light irradiation</title>
<author><name sortKey="Boumaza, S" sort="Boumaza, S" uniqKey="Boumaza S" first="S." last="Boumaza">S. Boumaza</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Technical and Scientific Research Centre of Physical Analysis (CRAPC), BP 248</s1>
<s2>RP 16004 Algiers</s2>
<s3>DZA</s3>
<sZ>1 aut.</sZ>
</inist:fA14>
<country>Algérie</country>
<wicri:noRegion>RP 16004 Algiers</wicri:noRegion>
</affiliation>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Laboratory of Chemistry of Natural Gas, Faculty of Chemistry (USTHB), BP 32</s1>
<s2>16111 Algiers</s2>
<s3>DZA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>Algérie</country>
<placeName><settlement type="city">Alger</settlement>
<region nuts="2">Wilaya d'Alger</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Belhadi, A" sort="Belhadi, A" uniqKey="Belhadi A" first="A." last="Belhadi">A. Belhadi</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Laboratory of Chemistry of Natural Gas, Faculty of Chemistry (USTHB), BP 32</s1>
<s2>16111 Algiers</s2>
<s3>DZA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>Algérie</country>
<placeName><settlement type="city">Alger</settlement>
<region nuts="2">Wilaya d'Alger</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Doulache, M" sort="Doulache, M" uniqKey="Doulache M" first="M." last="Doulache">M. Doulache</name>
<affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Laboratory of Storage and Valorisation of Renewable Energies, Faculty of Chemistry (USTHB), BP 32</s1>
<s2>16111 Algiers</s2>
<s3>DZA</s3>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Algérie</country>
<placeName><settlement type="city">Alger</settlement>
<region nuts="2">Wilaya d'Alger</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Trari, M" sort="Trari, M" uniqKey="Trari M" first="M." last="Trari">M. Trari</name>
<affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Laboratory of Storage and Valorisation of Renewable Energies, Faculty of Chemistry (USTHB), BP 32</s1>
<s2>16111 Algiers</s2>
<s3>DZA</s3>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Algérie</country>
<placeName><settlement type="city">Alger</settlement>
<region nuts="2">Wilaya d'Alger</region>
</placeName>
</affiliation>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">INIST</idno>
<idno type="inist">13-0006349</idno>
<date when="2012">2012</date>
<idno type="stanalyst">PASCAL 13-0006349 INIST</idno>
<idno type="RBID">Pascal:13-0006349</idno>
<idno type="wicri:Area/PascalFrancis/Corpus">000072</idno>
<idno type="wicri:Area/PascalFrancis/Curation">000369</idno>
<idno type="wicri:Area/PascalFrancis/Checkpoint">000079</idno>
<idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000079</idno>
<idno type="wicri:doubleKey">0360-3199:2012:Boumaza S:photocatalytic:hydrogen:production</idno>
<idno type="wicri:Area/Main/Merge">000276</idno>
<idno type="wicri:Area/Main/Curation">000270</idno>
<idno type="wicri:Area/Main/Exploration">000270</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Photocatalytic hydrogen production over NiO modified silica under visible light irradiation</title>
<author><name sortKey="Boumaza, S" sort="Boumaza, S" uniqKey="Boumaza S" first="S." last="Boumaza">S. Boumaza</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Technical and Scientific Research Centre of Physical Analysis (CRAPC), BP 248</s1>
<s2>RP 16004 Algiers</s2>
<s3>DZA</s3>
<sZ>1 aut.</sZ>
</inist:fA14>
<country>Algérie</country>
<wicri:noRegion>RP 16004 Algiers</wicri:noRegion>
</affiliation>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Laboratory of Chemistry of Natural Gas, Faculty of Chemistry (USTHB), BP 32</s1>
<s2>16111 Algiers</s2>
<s3>DZA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>Algérie</country>
<placeName><settlement type="city">Alger</settlement>
<region nuts="2">Wilaya d'Alger</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Belhadi, A" sort="Belhadi, A" uniqKey="Belhadi A" first="A." last="Belhadi">A. Belhadi</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Laboratory of Chemistry of Natural Gas, Faculty of Chemistry (USTHB), BP 32</s1>
<s2>16111 Algiers</s2>
<s3>DZA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>Algérie</country>
<placeName><settlement type="city">Alger</settlement>
<region nuts="2">Wilaya d'Alger</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Doulache, M" sort="Doulache, M" uniqKey="Doulache M" first="M." last="Doulache">M. Doulache</name>
<affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Laboratory of Storage and Valorisation of Renewable Energies, Faculty of Chemistry (USTHB), BP 32</s1>
<s2>16111 Algiers</s2>
<s3>DZA</s3>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Algérie</country>
<placeName><settlement type="city">Alger</settlement>
<region nuts="2">Wilaya d'Alger</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Trari, M" sort="Trari, M" uniqKey="Trari M" first="M." last="Trari">M. Trari</name>
<affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Laboratory of Storage and Valorisation of Renewable Energies, Faculty of Chemistry (USTHB), BP 32</s1>
<s2>16111 Algiers</s2>
<s3>DZA</s3>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Algérie</country>
<placeName><settlement type="city">Alger</settlement>
<region nuts="2">Wilaya d'Alger</region>
</placeName>
</affiliation>
</author>
</analytic>
<series><title level="j" type="main">International journal of hydrogen energy</title>
<title level="j" type="abbreviated">Int. j. hydrogen energy</title>
<idno type="ISSN">0360-3199</idno>
<imprint><date when="2012">2012</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt><title level="j" type="main">International journal of hydrogen energy</title>
<title level="j" type="abbreviated">Int. j. hydrogen energy</title>
<idno type="ISSN">0360-3199</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Catalyst</term>
<term>Electrochemical impedance spectroscopy</term>
<term>Energy storage</term>
<term>Hydrogen</term>
<term>Hydrogen production</term>
<term>Measurement</term>
<term>Nickel oxide</term>
<term>Performance</term>
<term>Photocatalysis</term>
<term>Sensitizer</term>
<term>Silica</term>
<term>Surface area</term>
<term>X ray diffractometry</term>
<term>Yield</term>
<term>pH</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Photocatalyse</term>
<term>Production hydrogène</term>
<term>Oxyde de nickel</term>
<term>Silice</term>
<term>Hydrogène</term>
<term>Diffractométrie RX</term>
<term>Mesure</term>
<term>Aire superficielle</term>
<term>Spectrométrie impédance électrochimique</term>
<term>Sensibilisateur</term>
<term>Performance</term>
<term>Catalyseur</term>
<term>pH</term>
<term>Rendement</term>
<term>Accumulation énergie</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Hydrogène</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">The novel hetero-system xNiO/SiO<sub>2</sub>
 (x = 0, 4 and 10%), prepared by impregnation/calcination, is assessed photoelectrochemically for the hydrogen evolution upon visible light. The X ray diffraction show mixed phases with a good crystallinity of NiO, spread uniformly over amorphous silica. The BET measurements give a specific surface area of ∼112 m<sup>2</sup>
 g<sup>-1</sup>
 for loaded compounds. The optical properties show strong light absorption of wavelengths shorter than 860 nm. The Mott-Schottky characteristic (C<sup>-2</sup>
-V) of NiO exhibits a positive slope, characteristic of n-type conductivity. The flat band potential (-0.93 V<sub>SCE</sub>
) is more cathodic than the water reduction level, thus allowing a spontaneous H<sub>2</sub>
 evolution. The electrochemical impedance spectroscopy reveals the predominance of the diffusion of finite length type and the Nyquist response is decomposed on R-C parallel circuit. NiO plays a key role as sensitizer and the photoactivity increases with increasing its loading. The best performance (0.2 cm<sup>3</sup>
 H<sub>2</sub>
 (g catalyst)<sup>-1</sup>
 mn<sup>-1</sup>
) occurs for 10% NiO at pH ∼ 13.1 with a light-to-chemical energy yield of 0.19% in presence of SO<sup>2-</sup>
<sub>3</sub>
 as hole scavenger. On the other hand, the decomposition of S<sub>2</sub>
O<sup>2</sup>
<sub>3</sub>
 is an energy storing process that could be a source of hydrogen from the solar light and the hetero-system is evaluated for the chemical energy storage through the photosynthetic reaction: (S<sub>2</sub>
O<sup>2-</sup>
<sub>3</sub>
 + H<sub>2</sub>
O + 2OH →2SO<sup>2-</sup>
<sub>3</sub>
 + 2H<sub>2</sub>
, ΔG<sub>f</sub>
° = 101.04 kJ mol<sup>-1</sup>
).</div>
</front>
</TEI>
<affiliations><list><country><li>Algérie</li>
</country>
<region><li>Wilaya d'Alger</li>
</region>
<settlement><li>Alger</li>
</settlement>
</list>
<tree><country name="Algérie"><noRegion><name sortKey="Boumaza, S" sort="Boumaza, S" uniqKey="Boumaza S" first="S." last="Boumaza">S. Boumaza</name>
</noRegion>
<name sortKey="Belhadi, A" sort="Belhadi, A" uniqKey="Belhadi A" first="A." last="Belhadi">A. Belhadi</name>
<name sortKey="Boumaza, S" sort="Boumaza, S" uniqKey="Boumaza S" first="S." last="Boumaza">S. Boumaza</name>
<name sortKey="Doulache, M" sort="Doulache, M" uniqKey="Doulache M" first="M." last="Doulache">M. Doulache</name>
<name sortKey="Trari, M" sort="Trari, M" uniqKey="Trari M" first="M." last="Trari">M. Trari</name>
</country>
</tree>
</affiliations>
</record>

Pour manipuler ce document sous Unix (Dilib)

EXPLOR_STEP=$WICRI_ROOT/Wicri/Terre/explor/NickelMaghrebV1/Data/Main/Exploration

HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000270 | SxmlIndent | more

HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000270 | SxmlIndent | more

Pour mettre un lien sur cette page dans le réseau Wicri

{{Explor lien
   |wiki=    Wicri/Terre
   |area=    NickelMaghrebV1
   |flux=    Main
   |étape=   Exploration
   |type=    RBID
   |clé=     Pascal:13-0006349
   |texte=   Photocatalytic hydrogen production over NiO modified silica under visible light irradiation
}}

This area was generated with Dilib version V0.6.27.
Data generation: Fri Mar 24 23:14:20 2017. Site generation: Tue Mar 5 17:03:47 2024

	Serveur d'exploration sur le nickel au Maghreb
	Attention, ce site est en cours de développement ! Attention, site généré par des moyens informatiques à partir de corpus bruts. Les informations ne sont donc pas validées.

Serveur d'exploration sur le nickel au Maghreb

Photocatalytic hydrogen production over NiO modified silica under visible light irradiation

Photocatalytic hydrogen production over NiO modified silica under visible light irradiation

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