Energy Storage and CO<sub>2</sub> Reduction Performances of Co/Co<sub>2</sub>C/C Prepared by an Anaerobic Ethanol Oxidation Reaction Using Sacrificial SnO<sub>2</sub>
Co/Co<sub>2</sub>C/C hybrids were prepared employing a new synthetic route and demonstrated as materials for energy storage and CO<sub>2</sub> recycling application. Herein, an anaerobic ethanol oxidation reaction over Co<sub>3</sub>O<sub>4</sub> nanop...
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MDPI AG
2020-09-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/10/10/1116 |
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| author | Young In Choi Ju Hyun Yang So Jeong Park Youngku Sohn |
| author_facet | Young In Choi Ju Hyun Yang So Jeong Park Youngku Sohn |
| author_sort | Young In Choi |
| collection | DOAJ |
| description | Co/Co<sub>2</sub>C/C hybrids were prepared employing a new synthetic route and demonstrated as materials for energy storage and CO<sub>2</sub> recycling application. Herein, an anaerobic ethanol oxidation reaction over Co<sub>3</sub>O<sub>4</sub> nanoparticles (NPs) was first employed to fabricate Co/Co<sub>2</sub>C/C hybrids using sacrificial SnO<sub>2</sub>. In the absence of SnO<sub>2</sub>, Co<sub>3</sub>O<sub>4</sub> NPs were converted to alpha and beta metallic Co. On the other hand, using sacrificial SnO<sub>2</sub> resulted in the formation of Co<sub>2</sub>C and Co embedded in the carbon matrix at approximately 450 °C, as determined by temperature-programmed mass spectrometry analysis. The newly developed materials were fully examined by X-ray diffraction crystallography, scanning electron microscopy, energy-dispersive X-ray analysis, high-resolution transmission electron microscopy, and X-ray photoelectron spectroscopy. The Co/Co<sub>2</sub>C/C hybrids showed a specific capacitance of 153 F/g at a current density of 0.5 A/g. Photocatalytic CO<sub>2</sub> reduction experiments were performed and generated CO, CH<sub>4</sub>, and CH<sub>3</sub>OH as reduction products with yields of 47.7, 11.0, and 23.4 μmol/g, respectively. The anaerobic ethanol oxidation reaction could be a very useful method for the development of carbon-supported metal carbides, which have not been achieved by other synthetic methods. Furthermore, the demonstration tests unveiled new application areas of Co carbide materials. |
| first_indexed | 2024-03-10T16:02:22Z |
| format | Article |
| id | doaj.art-067fff03b8374762a1001474fffe7893 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T16:02:22Z |
| publishDate | 2020-09-01 |
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| spelling | doaj.art-067fff03b8374762a1001474fffe78932023-11-20T15:09:13ZengMDPI AGCatalysts2073-43442020-09-011010111610.3390/catal10101116Energy Storage and CO<sub>2</sub> Reduction Performances of Co/Co<sub>2</sub>C/C Prepared by an Anaerobic Ethanol Oxidation Reaction Using Sacrificial SnO<sub>2</sub>Young In Choi0Ju Hyun Yang1So Jeong Park2Youngku Sohn3Department of Chemistry, Yeungnam University, Gyeongsan, Gyeongbuk 38541, KoreaDepartment of Chemistry, Chungnam National University, Daejeon 34134, KoreaDepartment of Chemistry, Chungnam National University, Daejeon 34134, KoreaDepartment of Chemistry, Yeungnam University, Gyeongsan, Gyeongbuk 38541, KoreaCo/Co<sub>2</sub>C/C hybrids were prepared employing a new synthetic route and demonstrated as materials for energy storage and CO<sub>2</sub> recycling application. Herein, an anaerobic ethanol oxidation reaction over Co<sub>3</sub>O<sub>4</sub> nanoparticles (NPs) was first employed to fabricate Co/Co<sub>2</sub>C/C hybrids using sacrificial SnO<sub>2</sub>. In the absence of SnO<sub>2</sub>, Co<sub>3</sub>O<sub>4</sub> NPs were converted to alpha and beta metallic Co. On the other hand, using sacrificial SnO<sub>2</sub> resulted in the formation of Co<sub>2</sub>C and Co embedded in the carbon matrix at approximately 450 °C, as determined by temperature-programmed mass spectrometry analysis. The newly developed materials were fully examined by X-ray diffraction crystallography, scanning electron microscopy, energy-dispersive X-ray analysis, high-resolution transmission electron microscopy, and X-ray photoelectron spectroscopy. The Co/Co<sub>2</sub>C/C hybrids showed a specific capacitance of 153 F/g at a current density of 0.5 A/g. Photocatalytic CO<sub>2</sub> reduction experiments were performed and generated CO, CH<sub>4</sub>, and CH<sub>3</sub>OH as reduction products with yields of 47.7, 11.0, and 23.4 μmol/g, respectively. The anaerobic ethanol oxidation reaction could be a very useful method for the development of carbon-supported metal carbides, which have not been achieved by other synthetic methods. Furthermore, the demonstration tests unveiled new application areas of Co carbide materials.https://www.mdpi.com/2073-4344/10/10/1116Co/Co<sub>2</sub>C/C hybridsanaerobic ethanol oxidationCO<sub>2</sub> reductionspecific capacitanceenergy storage |
| spellingShingle | Young In Choi Ju Hyun Yang So Jeong Park Youngku Sohn Energy Storage and CO<sub>2</sub> Reduction Performances of Co/Co<sub>2</sub>C/C Prepared by an Anaerobic Ethanol Oxidation Reaction Using Sacrificial SnO<sub>2</sub> Catalysts Co/Co<sub>2</sub>C/C hybrids anaerobic ethanol oxidation CO<sub>2</sub> reduction specific capacitance energy storage |
| title | Energy Storage and CO<sub>2</sub> Reduction Performances of Co/Co<sub>2</sub>C/C Prepared by an Anaerobic Ethanol Oxidation Reaction Using Sacrificial SnO<sub>2</sub> |
| title_full | Energy Storage and CO<sub>2</sub> Reduction Performances of Co/Co<sub>2</sub>C/C Prepared by an Anaerobic Ethanol Oxidation Reaction Using Sacrificial SnO<sub>2</sub> |
| title_fullStr | Energy Storage and CO<sub>2</sub> Reduction Performances of Co/Co<sub>2</sub>C/C Prepared by an Anaerobic Ethanol Oxidation Reaction Using Sacrificial SnO<sub>2</sub> |
| title_full_unstemmed | Energy Storage and CO<sub>2</sub> Reduction Performances of Co/Co<sub>2</sub>C/C Prepared by an Anaerobic Ethanol Oxidation Reaction Using Sacrificial SnO<sub>2</sub> |
| title_short | Energy Storage and CO<sub>2</sub> Reduction Performances of Co/Co<sub>2</sub>C/C Prepared by an Anaerobic Ethanol Oxidation Reaction Using Sacrificial SnO<sub>2</sub> |
| title_sort | energy storage and co sub 2 sub reduction performances of co co sub 2 sub c c prepared by an anaerobic ethanol oxidation reaction using sacrificial sno sub 2 sub |
| topic | Co/Co<sub>2</sub>C/C hybrids anaerobic ethanol oxidation CO<sub>2</sub> reduction specific capacitance energy storage |
| url | https://www.mdpi.com/2073-4344/10/10/1116 |
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