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Nanocrystalline In2O3-based H2S sensors operable at low temperatures

Identifieur interne : 006216 ( Main/Repository ); précédent : 006215; suivant : 006217

Nanocrystalline In2O3-based H2S sensors operable at low temperatures

Auteurs : RBID : Pascal:08-0385125

Descripteurs français

Pascal (Inist)
- Capteur chimique, Basse température, Solution solide, Diffraction RX, Microscopie électronique transmission, Electrode gaz, Détecteur de gaz, Sélectivité, Platine, Temps réponse, Analyse trace, Gaz liquéfié, Oxydation, Métal noble, Air, Pétrole, Additif, Oxyde d'indium, Sensibilité.
Wicri :
- concept : Platine, Pétrole.

English descriptors

KwdEn :
- Additive, Air, Chemical sensor, Gas detector, Gas electrode, Indium oxide, Liquefied gas, Low temperature, Noble metal, Oxidation, Petroleum, Platinum, Response time, Selectivity, Sensitivity, Solid solution, Trace analysis, Transmission electron microscopy, X ray diffraction.

Abstract

Nanocrystalline In₂O₃-based solid solutions, with different concentration of Co, with cubic structure were successfully prepared by a simple route. The as-prepared materials were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The indirect heating structure sensors based on pure and doped In₂O₃ as sensitive materials were fabricated on an alumna tube with Au electrodes and gas-sensing properties of the sensor elements were measured as a function of concentration of dopant, operating temperature and concentrations of the test gases. The results showed that In₂O₃ had high response towards H₂S gas at an operating temperature 150°C, while 2.5wt.% Co-doped In₂O₃ sensor exhibited enhance response and selectivity to H₂S at rather lower operating temperature. Incorporation of platinum further improved the response, selectivity and response time towards H₂S. Platinum incorporated 2.5 wt.% Co-doped In₂O₃ (Pt: 0.5 wt.%) was able to detect 10-100 ppm of H₂S in air at an operating temperature of 100°C. The selectivity of the sensor elements for H₂S against liquefied petroleum gas (LPG), NH₃ and H₂ gases was studied. The improved gas-sensing properties can mainly be attributed to the selectivity to oxidation of H₂S and noble metal additive sensitization.

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Pascal:08-0385125

Le document en format XML

<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Nanocrystalline In<sub>2</sub>
O<sub>3</sub>
-based H<sub>2</sub>
S sensors operable at low temperatures</title>
<author><name sortKey="Kapse, V D" uniqKey="Kapse V">V. D. Kapse</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Physics, Government Vidarbha Institute of Science & Humanities</s1>
<s2>Amravati 444604</s2>
<s3>IND</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>Inde</country>
<wicri:noRegion>Amravati 444604</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Ghosh, S A" uniqKey="Ghosh S">S. A. Ghosh</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Physics, Government Vidarbha Institute of Science & Humanities</s1>
<s2>Amravati 444604</s2>
<s3>IND</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>Inde</country>
<wicri:noRegion>Amravati 444604</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Chaudhari, G N" uniqKey="Chaudhari G">G. N. Chaudhari</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Nano Technology Research Laboratory, Department of Chemistry, Shri Shivaji Science College</s1>
<s2>Amravati 444603</s2>
<s3>IND</s3>
<sZ>3 aut.</sZ>
</inist:fA14>
<country>Inde</country>
<wicri:noRegion>Amravati 444603</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Raghuwanshi, F C" uniqKey="Raghuwanshi F">F. C. Raghuwanshi</name>
<affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Department of Physics, Vidyabharati Mahavidyalaya</s1>
<s2>Amravati 444603</s2>
<s3>IND</s3>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Inde</country>
<wicri:noRegion>Amravati 444603</wicri:noRegion>
</affiliation>
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</titleStmt>
<publicationStmt><idno type="inist">08-0385125</idno>
<date when="2008">2008</date>
<idno type="stanalyst">PASCAL 08-0385125 INIST</idno>
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<title level="j" type="abbreviated">Talanta : (Oxford)</title>
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</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Additive</term>
<term>Air</term>
<term>Chemical sensor</term>
<term>Gas detector</term>
<term>Gas electrode</term>
<term>Indium oxide</term>
<term>Liquefied gas</term>
<term>Low temperature</term>
<term>Noble metal</term>
<term>Oxidation</term>
<term>Petroleum</term>
<term>Platinum</term>
<term>Response time</term>
<term>Selectivity</term>
<term>Sensitivity</term>
<term>Solid solution</term>
<term>Trace analysis</term>
<term>Transmission electron microscopy</term>
<term>X ray diffraction</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Capteur chimique</term>
<term>Basse température</term>
<term>Solution solide</term>
<term>Diffraction RX</term>
<term>Microscopie électronique transmission</term>
<term>Electrode gaz</term>
<term>Détecteur de gaz</term>
<term>Sélectivité</term>
<term>Platine</term>
<term>Temps réponse</term>
<term>Analyse trace</term>
<term>Gaz liquéfié</term>
<term>Oxydation</term>
<term>Métal noble</term>
<term>Air</term>
<term>Pétrole</term>
<term>Additif</term>
<term>Oxyde d'indium</term>
<term>Sensibilité</term>
</keywords>
<keywords scheme="Wicri" type="concept" xml:lang="fr"><term>Platine</term>
<term>Pétrole</term>
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<front><div type="abstract" xml:lang="en">Nanocrystalline In<sub>2</sub>
O<sub>3</sub>
-based solid solutions, with different concentration of Co, with cubic structure were successfully prepared by a simple route. The as-prepared materials were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The indirect heating structure sensors based on pure and doped In<sub>2</sub>
O<sub>3</sub>
 as sensitive materials were fabricated on an alumna tube with Au electrodes and gas-sensing properties of the sensor elements were measured as a function of concentration of dopant, operating temperature and concentrations of the test gases. The results showed that In<sub>2</sub>
O<sub>3</sub>
 had high response towards H<sub>2</sub>
S gas at an operating temperature 150°C, while 2.5wt.% Co-doped In<sub>2</sub>
O<sub>3</sub>
 sensor exhibited enhance response and selectivity to H<sub>2</sub>
S at rather lower operating temperature. Incorporation of platinum further improved the response, selectivity and response time towards H<sub>2</sub>
S. Platinum incorporated 2.5 wt.% Co-doped In<sub>2</sub>
O<sub>3</sub>
 (Pt: 0.5 wt.%) was able to detect 10-100 ppm of H<sub>2</sub>
S in air at an operating temperature of 100°C. The selectivity of the sensor elements for H<sub>2</sub>
S against liquefied petroleum gas (LPG), NH<sub>3</sub>
 and H<sub>2</sub>
 gases was studied. The improved gas-sensing properties can mainly be attributed to the selectivity to oxidation of H<sub>2</sub>
S and noble metal additive sensitization.</div>
</front>
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<fA08 i1="01" i2="1" l="ENG"><s1>Nanocrystalline In<sub>2</sub>
O<sub>3</sub>
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S sensors operable at low temperatures</s1>
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<fA14 i1="01"><s1>Department of Physics, Government Vidarbha Institute of Science & Humanities</s1>
<s2>Amravati 444604</s2>
<s3>IND</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</fA14>
<fA14 i1="02"><s1>Nano Technology Research Laboratory, Department of Chemistry, Shri Shivaji Science College</s1>
<s2>Amravati 444603</s2>
<s3>IND</s3>
<sZ>3 aut.</sZ>
</fA14>
<fA14 i1="03"><s1>Department of Physics, Vidyabharati Mahavidyalaya</s1>
<s2>Amravati 444603</s2>
<s3>IND</s3>
<sZ>4 aut.</sZ>
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<fA20><s1>610-616</s1>
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<fC01 i1="01" l="ENG"><s0>Nanocrystalline In<sub>2</sub>
O<sub>3</sub>
-based solid solutions, with different concentration of Co, with cubic structure were successfully prepared by a simple route. The as-prepared materials were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The indirect heating structure sensors based on pure and doped In<sub>2</sub>
O<sub>3</sub>
 as sensitive materials were fabricated on an alumna tube with Au electrodes and gas-sensing properties of the sensor elements were measured as a function of concentration of dopant, operating temperature and concentrations of the test gases. The results showed that In<sub>2</sub>
O<sub>3</sub>
 had high response towards H<sub>2</sub>
S gas at an operating temperature 150°C, while 2.5wt.% Co-doped In<sub>2</sub>
O<sub>3</sub>
 sensor exhibited enhance response and selectivity to H<sub>2</sub>
S at rather lower operating temperature. Incorporation of platinum further improved the response, selectivity and response time towards H<sub>2</sub>
S. Platinum incorporated 2.5 wt.% Co-doped In<sub>2</sub>
O<sub>3</sub>
 (Pt: 0.5 wt.%) was able to detect 10-100 ppm of H<sub>2</sub>
S in air at an operating temperature of 100°C. The selectivity of the sensor elements for H<sub>2</sub>
S against liquefied petroleum gas (LPG), NH<sub>3</sub>
 and H<sub>2</sub>
 gases was studied. The improved gas-sensing properties can mainly be attributed to the selectivity to oxidation of H<sub>2</sub>
S and noble metal additive sensitization.</s0>
</fC01>
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<s5>01</s5>
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<s5>01</s5>
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<s5>01</s5>
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<fC03 i1="02" i2="X" l="FRE"><s0>Basse température</s0>
<s5>02</s5>
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<fC03 i1="02" i2="X" l="ENG"><s0>Low temperature</s0>
<s5>02</s5>
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<fC03 i1="02" i2="X" l="SPA"><s0>Baja temperatura</s0>
<s5>02</s5>
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<fC03 i1="03" i2="X" l="FRE"><s0>Solution solide</s0>
<s5>03</s5>
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<s5>03</s5>
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<s5>03</s5>
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<s5>04</s5>
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<s5>04</s5>
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<s5>04</s5>
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<s5>05</s5>
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<s5>06</s5>
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<s5>06</s5>
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<s5>06</s5>
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<s5>07</s5>
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<s5>07</s5>
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<s5>07</s5>
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<s5>08</s5>
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<fC03 i1="08" i2="X" l="ENG"><s0>Selectivity</s0>
<s5>08</s5>
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<fC03 i1="08" i2="X" l="SPA"><s0>Selectividad</s0>
<s5>08</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE"><s0>Platine</s0>
<s2>NC</s2>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG"><s0>Platinum</s0>
<s2>NC</s2>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA"><s0>Platino</s0>
<s2>NC</s2>
<s5>09</s5>
</fC03>
<fC03 i1="10" i2="X" l="FRE"><s0>Temps réponse</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="X" l="ENG"><s0>Response time</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="X" l="SPA"><s0>Tiempo respuesta</s0>
<s5>10</s5>
</fC03>
<fC03 i1="11" i2="X" l="FRE"><s0>Analyse trace</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="X" l="ENG"><s0>Trace analysis</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="X" l="SPA"><s0>Análisis huella</s0>
<s5>11</s5>
</fC03>
<fC03 i1="12" i2="X" l="FRE"><s0>Gaz liquéfié</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="ENG"><s0>Liquefied gas</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="SPA"><s0>Gas licuado</s0>
<s5>12</s5>
</fC03>
<fC03 i1="13" i2="X" l="FRE"><s0>Oxydation</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="X" l="ENG"><s0>Oxidation</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="X" l="SPA"><s0>Oxidación</s0>
<s5>13</s5>
</fC03>
<fC03 i1="14" i2="X" l="FRE"><s0>Métal noble</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="X" l="ENG"><s0>Noble metal</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="X" l="SPA"><s0>Metal noble</s0>
<s5>14</s5>
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<s5>15</s5>
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<s5>15</s5>
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<s5>15</s5>
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<s2>FX</s2>
<s5>16</s5>
</fC03>
<fC03 i1="16" i2="X" l="ENG"><s0>Petroleum</s0>
<s2>FX</s2>
<s5>16</s5>
</fC03>
<fC03 i1="16" i2="X" l="SPA"><s0>Petróleo</s0>
<s2>FX</s2>
<s5>16</s5>
</fC03>
<fC03 i1="17" i2="X" l="FRE"><s0>Additif</s0>
<s5>17</s5>
</fC03>
<fC03 i1="17" i2="X" l="ENG"><s0>Additive</s0>
<s5>17</s5>
</fC03>
<fC03 i1="17" i2="X" l="SPA"><s0>Aditivo</s0>
<s5>17</s5>
</fC03>
<fC03 i1="18" i2="X" l="FRE"><s0>Oxyde d'indium</s0>
<s5>18</s5>
</fC03>
<fC03 i1="18" i2="X" l="ENG"><s0>Indium oxide</s0>
<s5>18</s5>
</fC03>
<fC03 i1="18" i2="X" l="SPA"><s0>Indio óxido</s0>
<s5>18</s5>
</fC03>
<fC03 i1="19" i2="X" l="FRE"><s0>Sensibilité</s0>
<s5>22</s5>
</fC03>
<fC03 i1="19" i2="X" l="ENG"><s0>Sensitivity</s0>
<s5>22</s5>
</fC03>
<fC03 i1="19" i2="X" l="SPA"><s0>Sensibilidad</s0>
<s5>22</s5>
</fC03>
<fN21><s1>245</s1>
</fN21>
<fN44 i1="01"><s1>OTO</s1>
</fN44>
<fN82><s1>OTO</s1>
</fN82>
</pA>
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Nanocrystalline In2O3-based H2S sensors operable at low temperatures

Nanocrystalline In2O3-based H2S sensors operable at low temperatures

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Abstract

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