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Low-Temperature Catalytic CO Oxidation Over Non-Noble, Efficient Chromia in Reduced Graphene Oxide and Graphene Oxide Nanocomposites
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| Zeitschriftentitel: | Catalysts |
|---|---|
| Personen und Körperschaften: | , , , , |
| In: | Catalysts, 10, 2020, 1, S. 105 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
MDPI AG
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| Schlagwörter: |
| author_facet |
Ali, Asma A. Madkour, Metwally Sagheer, Fakhreia Al Zaki, Mohamed I. Abdel Nazeer, Ahmed Ali, Asma A. Madkour, Metwally Sagheer, Fakhreia Al Zaki, Mohamed I. Abdel Nazeer, Ahmed |
|---|---|
| author |
Ali, Asma A. Madkour, Metwally Sagheer, Fakhreia Al Zaki, Mohamed I. Abdel Nazeer, Ahmed |
| spellingShingle |
Ali, Asma A. Madkour, Metwally Sagheer, Fakhreia Al Zaki, Mohamed I. Abdel Nazeer, Ahmed Catalysts Low-Temperature Catalytic CO Oxidation Over Non-Noble, Efficient Chromia in Reduced Graphene Oxide and Graphene Oxide Nanocomposites Physical and Theoretical Chemistry Catalysis |
| author_sort |
ali, asma a. |
| spelling |
Ali, Asma A. Madkour, Metwally Sagheer, Fakhreia Al Zaki, Mohamed I. Abdel Nazeer, Ahmed 2073-4344 MDPI AG Physical and Theoretical Chemistry Catalysis http://dx.doi.org/10.3390/catal10010105 <jats:p>Herein, bare chromia nanoparticles (Cr2O3 NPs) and chromia supported on reduced graphene oxide (rGO) and graphene oxide (GO) hybrids were synthesized, followed by characterization by means of FESEM, Raman spectroscopy, TGA, XRD, TEM/HRTEM, XPS and N2 sorptiometry. The investigated bare Cr2O3 and the hybrids (Cr2O3/rGO and Cr2O3/GO) were employed as catalysts for low-temperature CO oxidation. Compared with the other catalysts, the results revealed efficient catalytic activity using Cr2O3/GO, which was attributed to its higher surface area together with the mixed oxidation state of chromium (Cr3+ and Cr>3+). These are important oxidation sites that facilitate the electron mobility essential for CO oxidation. Moreover, the presence of carbon vacancy defects and functional groups facilitate the stabilizing of Cr2O3 NPs on its surface, forming a thermally stable hybrid material, which assists the CO oxidation process. The Cr2O3/GO hybrid is a promising low-cost and efficient catalyst for CO oxidation at low temperatures. The higher activity of graphene oxide supported Cr2O3 NPs can provide an efficient and cost-effective solution to a prominent environmental problem.</jats:p> Low-Temperature Catalytic CO Oxidation Over Non-Noble, Efficient Chromia in Reduced Graphene Oxide and Graphene Oxide Nanocomposites Catalysts |
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10.3390/catal10010105 |
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MDPI AG, 2020 |
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| title |
Low-Temperature Catalytic CO Oxidation Over Non-Noble, Efficient Chromia in Reduced Graphene Oxide and Graphene Oxide Nanocomposites |
| title_unstemmed |
Low-Temperature Catalytic CO Oxidation Over Non-Noble, Efficient Chromia in Reduced Graphene Oxide and Graphene Oxide Nanocomposites |
| title_full |
Low-Temperature Catalytic CO Oxidation Over Non-Noble, Efficient Chromia in Reduced Graphene Oxide and Graphene Oxide Nanocomposites |
| title_fullStr |
Low-Temperature Catalytic CO Oxidation Over Non-Noble, Efficient Chromia in Reduced Graphene Oxide and Graphene Oxide Nanocomposites |
| title_full_unstemmed |
Low-Temperature Catalytic CO Oxidation Over Non-Noble, Efficient Chromia in Reduced Graphene Oxide and Graphene Oxide Nanocomposites |
| title_short |
Low-Temperature Catalytic CO Oxidation Over Non-Noble, Efficient Chromia in Reduced Graphene Oxide and Graphene Oxide Nanocomposites |
| title_sort |
low-temperature catalytic co oxidation over non-noble, efficient chromia in reduced graphene oxide and graphene oxide nanocomposites |
| topic |
Physical and Theoretical Chemistry Catalysis |
| url |
http://dx.doi.org/10.3390/catal10010105 |
| publishDate |
2020 |
| physical |
105 |
| description |
<jats:p>Herein, bare chromia nanoparticles (Cr2O3 NPs) and chromia supported on reduced graphene oxide (rGO) and graphene oxide (GO) hybrids were synthesized, followed by characterization by means of FESEM, Raman spectroscopy, TGA, XRD, TEM/HRTEM, XPS and N2 sorptiometry. The investigated bare Cr2O3 and the hybrids (Cr2O3/rGO and Cr2O3/GO) were employed as catalysts for low-temperature CO oxidation. Compared with the other catalysts, the results revealed efficient catalytic activity using Cr2O3/GO, which was attributed to its higher surface area together with the mixed oxidation state of chromium (Cr3+ and Cr>3+). These are important oxidation sites that facilitate the electron mobility essential for CO oxidation. Moreover, the presence of carbon vacancy defects and functional groups facilitate the stabilizing of Cr2O3 NPs on its surface, forming a thermally stable hybrid material, which assists the CO oxidation process. The Cr2O3/GO hybrid is a promising low-cost and efficient catalyst for CO oxidation at low temperatures. The higher activity of graphene oxide supported Cr2O3 NPs can provide an efficient and cost-effective solution to a prominent environmental problem.</jats:p> |
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| author | Ali, Asma A., Madkour, Metwally, Sagheer, Fakhreia Al, Zaki, Mohamed I., Abdel Nazeer, Ahmed |
| author_facet | Ali, Asma A., Madkour, Metwally, Sagheer, Fakhreia Al, Zaki, Mohamed I., Abdel Nazeer, Ahmed, Ali, Asma A., Madkour, Metwally, Sagheer, Fakhreia Al, Zaki, Mohamed I., Abdel Nazeer, Ahmed |
| author_sort | ali, asma a. |
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| description | <jats:p>Herein, bare chromia nanoparticles (Cr2O3 NPs) and chromia supported on reduced graphene oxide (rGO) and graphene oxide (GO) hybrids were synthesized, followed by characterization by means of FESEM, Raman spectroscopy, TGA, XRD, TEM/HRTEM, XPS and N2 sorptiometry. The investigated bare Cr2O3 and the hybrids (Cr2O3/rGO and Cr2O3/GO) were employed as catalysts for low-temperature CO oxidation. Compared with the other catalysts, the results revealed efficient catalytic activity using Cr2O3/GO, which was attributed to its higher surface area together with the mixed oxidation state of chromium (Cr3+ and Cr>3+). These are important oxidation sites that facilitate the electron mobility essential for CO oxidation. Moreover, the presence of carbon vacancy defects and functional groups facilitate the stabilizing of Cr2O3 NPs on its surface, forming a thermally stable hybrid material, which assists the CO oxidation process. The Cr2O3/GO hybrid is a promising low-cost and efficient catalyst for CO oxidation at low temperatures. The higher activity of graphene oxide supported Cr2O3 NPs can provide an efficient and cost-effective solution to a prominent environmental problem.</jats:p> |
| doi_str_mv | 10.3390/catal10010105 |
| facet_avail | Online, Free |
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| imprint_str_mv | MDPI AG, 2020 |
| institution | DE-Brt1, DE-Zwi2, DE-D161, DE-Gla1, DE-Zi4, DE-15, DE-Pl11, DE-Rs1, DE-105, DE-14, DE-Ch1, DE-L229, DE-D275, DE-Bn3 |
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| issn_str_mv | 2073-4344 |
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| last_indexed | 2024-03-01T17:50:52.023Z |
| match_str | ali2020lowtemperaturecatalyticcooxidationovernonnobleefficientchromiainreducedgrapheneoxideandgrapheneoxidenanocomposites |
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| physical | 105 |
| publishDate | 2020 |
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| publisher | MDPI AG |
| record_format | ai |
| recordtype | ai |
| series | Catalysts |
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| spelling | Ali, Asma A. Madkour, Metwally Sagheer, Fakhreia Al Zaki, Mohamed I. Abdel Nazeer, Ahmed 2073-4344 MDPI AG Physical and Theoretical Chemistry Catalysis http://dx.doi.org/10.3390/catal10010105 <jats:p>Herein, bare chromia nanoparticles (Cr2O3 NPs) and chromia supported on reduced graphene oxide (rGO) and graphene oxide (GO) hybrids were synthesized, followed by characterization by means of FESEM, Raman spectroscopy, TGA, XRD, TEM/HRTEM, XPS and N2 sorptiometry. The investigated bare Cr2O3 and the hybrids (Cr2O3/rGO and Cr2O3/GO) were employed as catalysts for low-temperature CO oxidation. Compared with the other catalysts, the results revealed efficient catalytic activity using Cr2O3/GO, which was attributed to its higher surface area together with the mixed oxidation state of chromium (Cr3+ and Cr>3+). These are important oxidation sites that facilitate the electron mobility essential for CO oxidation. Moreover, the presence of carbon vacancy defects and functional groups facilitate the stabilizing of Cr2O3 NPs on its surface, forming a thermally stable hybrid material, which assists the CO oxidation process. The Cr2O3/GO hybrid is a promising low-cost and efficient catalyst for CO oxidation at low temperatures. The higher activity of graphene oxide supported Cr2O3 NPs can provide an efficient and cost-effective solution to a prominent environmental problem.</jats:p> Low-Temperature Catalytic CO Oxidation Over Non-Noble, Efficient Chromia in Reduced Graphene Oxide and Graphene Oxide Nanocomposites Catalysts |
| spellingShingle | Ali, Asma A., Madkour, Metwally, Sagheer, Fakhreia Al, Zaki, Mohamed I., Abdel Nazeer, Ahmed, Catalysts, Low-Temperature Catalytic CO Oxidation Over Non-Noble, Efficient Chromia in Reduced Graphene Oxide and Graphene Oxide Nanocomposites, Physical and Theoretical Chemistry, Catalysis |
| title | Low-Temperature Catalytic CO Oxidation Over Non-Noble, Efficient Chromia in Reduced Graphene Oxide and Graphene Oxide Nanocomposites |
| title_full | Low-Temperature Catalytic CO Oxidation Over Non-Noble, Efficient Chromia in Reduced Graphene Oxide and Graphene Oxide Nanocomposites |
| title_fullStr | Low-Temperature Catalytic CO Oxidation Over Non-Noble, Efficient Chromia in Reduced Graphene Oxide and Graphene Oxide Nanocomposites |
| title_full_unstemmed | Low-Temperature Catalytic CO Oxidation Over Non-Noble, Efficient Chromia in Reduced Graphene Oxide and Graphene Oxide Nanocomposites |
| title_short | Low-Temperature Catalytic CO Oxidation Over Non-Noble, Efficient Chromia in Reduced Graphene Oxide and Graphene Oxide Nanocomposites |
| title_sort | low-temperature catalytic co oxidation over non-noble, efficient chromia in reduced graphene oxide and graphene oxide nanocomposites |
| title_unstemmed | Low-Temperature Catalytic CO Oxidation Over Non-Noble, Efficient Chromia in Reduced Graphene Oxide and Graphene Oxide Nanocomposites |
| topic | Physical and Theoretical Chemistry, Catalysis |
| url | http://dx.doi.org/10.3390/catal10010105 |