Highly oxidation-resistant graphene-based porous carbon as a metal catalyst support
Porous graphene (PG) prepared from reduction and KOH activation of graphene oxide was heat-treated under argon atmosphere to obtain a partially graphitized porous carbon with high oxidation resistance. Transmission electron microscopy, Raman spectroscopy, synchrotron X-ray diffraction, and N2 adsorp...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-04-01
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| Series: | Carbon Trends |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667056921000067 |
| _version_ | 1819146793077702656 |
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| author | Shuwen Wang Yasunori Yoshikawa Zhipeng Wang Hideki Tanaka Katsumi Kaneko |
| author_facet | Shuwen Wang Yasunori Yoshikawa Zhipeng Wang Hideki Tanaka Katsumi Kaneko |
| author_sort | Shuwen Wang |
| collection | DOAJ |
| description | Porous graphene (PG) prepared from reduction and KOH activation of graphene oxide was heat-treated under argon atmosphere to obtain a partially graphitized porous carbon with high oxidation resistance. Transmission electron microscopy, Raman spectroscopy, synchrotron X-ray diffraction, and N2 adsorption isotherms (77 K) clearly illustrate the structural ordering and porosity change of PG under heat treatment. Pitch-based activated carbon fiber (ACF) was studied for comparison. PG is more graphitizable than ACF under heat treatment because it consists of highly flexible graphene units of larger size than those in ACF. Thermogravimetric studies indicate that heat treatment enhances more the thermal stability of PG than ACF, and metal-loading has a less detrimental effect on the thermal stability of heat-treated PG than heat-treated ACF and other reported carbon supports. Heat-treated PG shows great superiority to other carbon supports due to its both splendid oxidation resistance and high surface area. This study provides a promising route for the preparation of carbon-based catalyst supports for mild oxidative environments. |
| first_indexed | 2024-12-22T13:19:34Z |
| format | Article |
| id | doaj.art-e0244cd8ebe84f348f89daa9383c8c4d |
| institution | Directory Open Access Journal |
| issn | 2667-0569 |
| language | English |
| last_indexed | 2024-12-22T13:19:34Z |
| publishDate | 2021-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbon Trends |
| spelling | doaj.art-e0244cd8ebe84f348f89daa9383c8c4d2022-12-21T18:24:30ZengElsevierCarbon Trends2667-05692021-04-013100029Highly oxidation-resistant graphene-based porous carbon as a metal catalyst supportShuwen Wang0Yasunori Yoshikawa1Zhipeng Wang2Hideki Tanaka3Katsumi Kaneko4Research Initiative for Supra-Materials, Shinshu University, Nagano 380-8553, JapanResearch Initiative for Supra-Materials, Shinshu University, Nagano 380-8553, JapanInstitute of Advanced Materials, Jiangxi Normal University, Nanchang 330022, ChinaResearch Initiative for Supra-Materials, Shinshu University, Nagano 380-8553, JapanResearch Initiative for Supra-Materials, Shinshu University, Nagano 380-8553, Japan; Corresponding author.Porous graphene (PG) prepared from reduction and KOH activation of graphene oxide was heat-treated under argon atmosphere to obtain a partially graphitized porous carbon with high oxidation resistance. Transmission electron microscopy, Raman spectroscopy, synchrotron X-ray diffraction, and N2 adsorption isotherms (77 K) clearly illustrate the structural ordering and porosity change of PG under heat treatment. Pitch-based activated carbon fiber (ACF) was studied for comparison. PG is more graphitizable than ACF under heat treatment because it consists of highly flexible graphene units of larger size than those in ACF. Thermogravimetric studies indicate that heat treatment enhances more the thermal stability of PG than ACF, and metal-loading has a less detrimental effect on the thermal stability of heat-treated PG than heat-treated ACF and other reported carbon supports. Heat-treated PG shows great superiority to other carbon supports due to its both splendid oxidation resistance and high surface area. This study provides a promising route for the preparation of carbon-based catalyst supports for mild oxidative environments.http://www.sciencedirect.com/science/article/pii/S2667056921000067Oxidation-resistantCatalyst supportGraphitizable carbonPorous graphene |
| spellingShingle | Shuwen Wang Yasunori Yoshikawa Zhipeng Wang Hideki Tanaka Katsumi Kaneko Highly oxidation-resistant graphene-based porous carbon as a metal catalyst support Carbon Trends Oxidation-resistant Catalyst support Graphitizable carbon Porous graphene |
| title | Highly oxidation-resistant graphene-based porous carbon as a metal catalyst support |
| title_full | Highly oxidation-resistant graphene-based porous carbon as a metal catalyst support |
| title_fullStr | Highly oxidation-resistant graphene-based porous carbon as a metal catalyst support |
| title_full_unstemmed | Highly oxidation-resistant graphene-based porous carbon as a metal catalyst support |
| title_short | Highly oxidation-resistant graphene-based porous carbon as a metal catalyst support |
| title_sort | highly oxidation resistant graphene based porous carbon as a metal catalyst support |
| topic | Oxidation-resistant Catalyst support Graphitizable carbon Porous graphene |
| url | http://www.sciencedirect.com/science/article/pii/S2667056921000067 |
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