Co@C/CoOx coupled with N-doped layer-structured carbons for excellent CO2 capture and oxygen reduction reaction
Current environmental and energy issues urge the advance of stable and cost-effective porous nanostructures for highly efficient electrochemical energy conversion/storage, and gas adsorption/separation. Herein, we report a one-pot, scalable pyrolysis process for fabrication of hierarchically layer-s...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
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Pergamon
2018
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| Online Access: | http://purl.org/au-research/grants/arc/DP150103026 http://hdl.handle.net/20.500.11937/66636 |
| _version_ | 1848761358232846336 |
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| author | Zhang, H. Tian, W. Qian, Z. Ouyang, T. Saunders, M. Qin, J. Wang, Shaobin Tade, Moses Sun, Hongqi |
| author_facet | Zhang, H. Tian, W. Qian, Z. Ouyang, T. Saunders, M. Qin, J. Wang, Shaobin Tade, Moses Sun, Hongqi |
| author_sort | Zhang, H. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Current environmental and energy issues urge the advance of stable and cost-effective porous nanostructures for highly efficient electrochemical energy conversion/storage, and gas adsorption/separation. Herein, we report a one-pot, scalable pyrolysis process for fabrication of hierarchically layer-structured porous carbons with nitrogen doping and cobalt modification (Co-N-PCs) for efficient high-pressure CO2 gas adsorption and oxygen reduction reaction (ORR). Co-N-PCs possess large specific surface areas and abundant layered macropores containing micropores and narrow mesopores, coupled with core-shell Co@C/CoOx structure. Co-N-PC 800 (synthesized at 800 °C) shows a high CO2 capture capability of 18.5 mmol g−1 at 10 bar (0 °C) and an outstanding catalytic activity for ORR. Density functional theory (DFT) calculations reveal that the cobalt cores inside graphene layers powerfully promote electron transfer from Co to surrounding C atoms, which work together with doped N to create superior catalytically active sites in the graphene shells. In addition, the negative charge states of C induced in N-doped Co@C structure contribute to the capture of CO2. |
| first_indexed | 2025-11-14T10:30:24Z |
| format | Journal Article |
| id | curtin-20.500.11937-66636 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:30:24Z |
| publishDate | 2018 |
| publisher | Pergamon |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-666362022-10-26T07:17:08Z Co@C/CoOx coupled with N-doped layer-structured carbons for excellent CO2 capture and oxygen reduction reaction Zhang, H. Tian, W. Qian, Z. Ouyang, T. Saunders, M. Qin, J. Wang, Shaobin Tade, Moses Sun, Hongqi Current environmental and energy issues urge the advance of stable and cost-effective porous nanostructures for highly efficient electrochemical energy conversion/storage, and gas adsorption/separation. Herein, we report a one-pot, scalable pyrolysis process for fabrication of hierarchically layer-structured porous carbons with nitrogen doping and cobalt modification (Co-N-PCs) for efficient high-pressure CO2 gas adsorption and oxygen reduction reaction (ORR). Co-N-PCs possess large specific surface areas and abundant layered macropores containing micropores and narrow mesopores, coupled with core-shell Co@C/CoOx structure. Co-N-PC 800 (synthesized at 800 °C) shows a high CO2 capture capability of 18.5 mmol g−1 at 10 bar (0 °C) and an outstanding catalytic activity for ORR. Density functional theory (DFT) calculations reveal that the cobalt cores inside graphene layers powerfully promote electron transfer from Co to surrounding C atoms, which work together with doped N to create superior catalytically active sites in the graphene shells. In addition, the negative charge states of C induced in N-doped Co@C structure contribute to the capture of CO2. 2018 Journal Article http://hdl.handle.net/20.500.11937/66636 10.1016/j.carbon.2018.03.044 http://purl.org/au-research/grants/arc/DP150103026 Pergamon restricted |
| spellingShingle | Zhang, H. Tian, W. Qian, Z. Ouyang, T. Saunders, M. Qin, J. Wang, Shaobin Tade, Moses Sun, Hongqi Co@C/CoOx coupled with N-doped layer-structured carbons for excellent CO2 capture and oxygen reduction reaction |
| title | Co@C/CoOx coupled with N-doped layer-structured carbons for excellent CO2 capture and oxygen reduction reaction |
| title_full | Co@C/CoOx coupled with N-doped layer-structured carbons for excellent CO2 capture and oxygen reduction reaction |
| title_fullStr | Co@C/CoOx coupled with N-doped layer-structured carbons for excellent CO2 capture and oxygen reduction reaction |
| title_full_unstemmed | Co@C/CoOx coupled with N-doped layer-structured carbons for excellent CO2 capture and oxygen reduction reaction |
| title_short | Co@C/CoOx coupled with N-doped layer-structured carbons for excellent CO2 capture and oxygen reduction reaction |
| title_sort | co@c/coox coupled with n-doped layer-structured carbons for excellent co2 capture and oxygen reduction reaction |
| url | http://purl.org/au-research/grants/arc/DP150103026 http://hdl.handle.net/20.500.11937/66636 |