Electrical Properties of Partial Carbonized Nanoporous Resin Based on Resorcinol-Formaldehyde
Organic xerogel compounds were prepared by sol-gel method from resorcinol-formaldehyde mixtures in acetone using picric acid as catalyst. The electrical properties of the obtained nanoporous carbon structures were explored by changing the pyrolysis temperature. In this study, the electrical conducti...
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| Veröffentlicht in: | Sensors & transducers 2014-05, Vol.27 (5), p.285-285 |
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| creator | Najeh, Imededdine Mansour, Nabil Ben Dahman, Hassan Alyamani, Ahmed El Mir, Lassaad |
| description | Organic xerogel compounds were prepared by sol-gel method from resorcinol-formaldehyde mixtures in acetone using picric acid as catalyst. The electrical properties of the obtained nanoporous carbon structures were explored by changing the pyrolysis temperature. In this study, the electrical conductivity σ can be expressed as σ=σ^sub 0^exp(-E^sub σ^/kT), where E^sub σ^ depends on the carbonized temperature. The dc and ac conductivities of the obtained amorphous carbon have been investigated from 80 degrees Celsius to 300 degrees Celsius and in the frequency range between 40 Hz and 10^subp 6^ Hz for samples pyrolysed at different temperatures in the insulator-metal transition range. The temperature dependence of samples pyrolysed at low temperatures (T^sub p^=600 degrees Celsius-675 degrees Celsius) follows a Mott law, whereas samples pyrolysed at high temperature (Tp=1,000 degrees Celsius) show an Arrhenius dependence. |
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The electrical properties of the obtained nanoporous carbon structures were explored by changing the pyrolysis temperature. In this study, the electrical conductivity σ can be expressed as σ=σ^sub 0^exp(-E^sub σ^/kT), where E^sub σ^ depends on the carbonized temperature. The dc and ac conductivities of the obtained amorphous carbon have been investigated from 80 degrees Celsius to 300 degrees Celsius and in the frequency range between 40 Hz and 10^subp 6^ Hz for samples pyrolysed at different temperatures in the insulator-metal transition range. The temperature dependence of samples pyrolysed at low temperatures (T^sub p^=600 degrees Celsius-675 degrees Celsius) follows a Mott law, whereas samples pyrolysed at high temperature (Tp=1,000 degrees Celsius) show an Arrhenius dependence.</description><identifier>ISSN: 2306-8515</identifier><identifier>EISSN: 1726-5479</identifier><language>eng</language><publisher>Toronto: IFSA Publishing, S.L</publisher><subject>Carbon ; Conductivity ; Direct current ; Electrical properties ; Heat ; Nanostructure ; Nitrogen ; Phase transitions ; Resistivity ; Sol gel process ; Temperature ; Temperature dependence ; Transducers</subject><ispartof>Sensors & transducers, 2014-05, Vol.27 (5), p.285-285</ispartof><rights>Copyright IFSA Publishing, S.L. 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The electrical properties of the obtained nanoporous carbon structures were explored by changing the pyrolysis temperature. In this study, the electrical conductivity σ can be expressed as σ=σ^sub 0^exp(-E^sub σ^/kT), where E^sub σ^ depends on the carbonized temperature. The dc and ac conductivities of the obtained amorphous carbon have been investigated from 80 degrees Celsius to 300 degrees Celsius and in the frequency range between 40 Hz and 10^subp 6^ Hz for samples pyrolysed at different temperatures in the insulator-metal transition range. The temperature dependence of samples pyrolysed at low temperatures (T^sub p^=600 degrees Celsius-675 degrees Celsius) follows a Mott law, whereas samples pyrolysed at high temperature (Tp=1,000 degrees Celsius) show an Arrhenius dependence.</description><subject>Carbon</subject><subject>Conductivity</subject><subject>Direct current</subject><subject>Electrical properties</subject><subject>Heat</subject><subject>Nanostructure</subject><subject>Nitrogen</subject><subject>Phase transitions</subject><subject>Resistivity</subject><subject>Sol gel process</subject><subject>Temperature</subject><subject>Temperature dependence</subject><subject>Transducers</subject><issn>2306-8515</issn><issn>1726-5479</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNpdkE9LAzEUxIMoWGq_w4IXLwsv_5OjllaFokV6lZJu3uKWNFmT9qCf3og9eZo3w4_HMBdkQjVTrRTaXpIJ46BaI6m8JrNS9gBAQWvLYELeFwG7Yx46F5p1TiPm44ClSX2zdvWs6dzlXYrDN_rmxcU0ppxOpXnDMsTmwZUap_hrU-6GmEK7TPnggsePL4835Kp3oeDsrFOyWS4286d29fr4PL9ftaOiohUG7U6D9D1Kp7kyHg3vmEAOpheAqAwHhpJTJrTwlgkQzEoLslOGMs-n5O7v7ZjT5wnLcXsYSochuIi17JZKpUHVAURFb_-h-3TKsZarlOCcW6E4_wH5_F3t</recordid><startdate>20140501</startdate><enddate>20140501</enddate><creator>Najeh, Imededdine</creator><creator>Mansour, Nabil Ben</creator><creator>Dahman, Hassan</creator><creator>Alyamani, Ahmed</creator><creator>El Mir, Lassaad</creator><general>IFSA Publishing, S.L</general><scope>3V.</scope><scope>4T-</scope><scope>4U-</scope><scope>7SP</scope><scope>7XB</scope><scope>88I</scope><scope>88K</scope><scope>8AL</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BFMQW</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>CLZPN</scope><scope>DWQXO</scope><scope>F28</scope><scope>FR3</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>JQ2</scope><scope>K7-</scope><scope>L6V</scope><scope>L7M</scope><scope>M0N</scope><scope>M2P</scope><scope>M2T</scope><scope>M7S</scope><scope>P5Z</scope><scope>P62</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>Q9U</scope><scope>S0W</scope></search><sort><creationdate>20140501</creationdate><title>Electrical Properties of Partial Carbonized Nanoporous Resin Based on Resorcinol-Formaldehyde</title><author>Najeh, Imededdine ; 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| source | EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
| subjects | Carbon Conductivity Direct current Electrical properties Heat Nanostructure Nitrogen Phase transitions Resistivity Sol gel process Temperature Temperature dependence Transducers |
| title | Electrical Properties of Partial Carbonized Nanoporous Resin Based on Resorcinol-Formaldehyde |
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