CO2 Hydrogenation Using Size-dependent Ru Particles Supported on g-C3N4
Efficient catalysis of CO2 hydrogenation holds significant promise for addressing environmental concerns and advancing sustainable energy solutions. In this study, we report the synthesis of a novel series of Ru-supported on graphitic carbon nitride (g-C3N4) catalysts, with a focus on the impact of...
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| Language: | English |
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Elsevier
2024-12-01
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| Series: | Carbon Capture Science & Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772656824000605 |
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| author | Rasmeet Singh Lizhuo Wang Haoyue Sun Jun Huang |
| author_facet | Rasmeet Singh Lizhuo Wang Haoyue Sun Jun Huang |
| author_sort | Rasmeet Singh |
| collection | DOAJ |
| description | Efficient catalysis of CO2 hydrogenation holds significant promise for addressing environmental concerns and advancing sustainable energy solutions. In this study, we report the synthesis of a novel series of Ru-supported on graphitic carbon nitride (g-C3N4) catalysts, with a focus on the impact of ruthenium (Ru) loading on the thermocatalytic performance. Varying Ru concentrations were introduced, including 0.2, 0.5, 1.0, 2.0, and 5.0 wt%, resulting in different Ru particle sizes on g-C3N4 support. Through a multifaceted characterization approach, it was observed that the catalyst containing 1 wt% Ru loading displayed superior performance, with a high density of active sites, indicated by an enhanced CO2 conversion rate of 36.8 % at 450 °C and a CO yield of 25 %. This catalyst also exhibited remarkable CO selectivity of 83 % at 375 °C. Conversely, lower loadings of 0.2 and 0.5 wt % Ru were found to be less effective, yielding minimal CO2 conversion. Loadings above 1 wt% Ru, while achieving high CO2 conversion, demonstrated a preference for CH4 production over CO, indicating lower selectivity for the desired product. This study elucidates the critical role of Ru nanocluster size in the catalytic activity and selectivity, with 1 wt % Ru-supported g-C3N4 emerging as a promising candidate for selective CO generation from CO2 hydrogenation, offering a pathway for the valorization of CO2 as a raw material in the chemical industry. |
| format | Article |
| id | doaj-art-89da89f8feaa44579ea023bff8d2af91 |
| institution | DOAJ |
| issn | 2772-6568 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbon Capture Science & Technology |
| spelling | doaj-art-89da89f8feaa44579ea023bff8d2af912025-08-20T02:50:04ZengElsevierCarbon Capture Science & Technology2772-65682024-12-011310024810.1016/j.ccst.2024.100248CO2 Hydrogenation Using Size-dependent Ru Particles Supported on g-C3N4Rasmeet Singh0Lizhuo Wang1Haoyue Sun2Jun Huang3Laboratory of Catalysis Engineering, School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2037, AustraliaCorresponding authors.; Laboratory of Catalysis Engineering, School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2037, AustraliaLaboratory of Catalysis Engineering, School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2037, AustraliaCorresponding authors.; Laboratory of Catalysis Engineering, School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2037, AustraliaEfficient catalysis of CO2 hydrogenation holds significant promise for addressing environmental concerns and advancing sustainable energy solutions. In this study, we report the synthesis of a novel series of Ru-supported on graphitic carbon nitride (g-C3N4) catalysts, with a focus on the impact of ruthenium (Ru) loading on the thermocatalytic performance. Varying Ru concentrations were introduced, including 0.2, 0.5, 1.0, 2.0, and 5.0 wt%, resulting in different Ru particle sizes on g-C3N4 support. Through a multifaceted characterization approach, it was observed that the catalyst containing 1 wt% Ru loading displayed superior performance, with a high density of active sites, indicated by an enhanced CO2 conversion rate of 36.8 % at 450 °C and a CO yield of 25 %. This catalyst also exhibited remarkable CO selectivity of 83 % at 375 °C. Conversely, lower loadings of 0.2 and 0.5 wt % Ru were found to be less effective, yielding minimal CO2 conversion. Loadings above 1 wt% Ru, while achieving high CO2 conversion, demonstrated a preference for CH4 production over CO, indicating lower selectivity for the desired product. This study elucidates the critical role of Ru nanocluster size in the catalytic activity and selectivity, with 1 wt % Ru-supported g-C3N4 emerging as a promising candidate for selective CO generation from CO2 hydrogenation, offering a pathway for the valorization of CO2 as a raw material in the chemical industry.http://www.sciencedirect.com/science/article/pii/S2772656824000605CO2 hydrogenationRu single atomsize effectin-situ DRIFTSCO selectivity |
| spellingShingle | Rasmeet Singh Lizhuo Wang Haoyue Sun Jun Huang CO2 Hydrogenation Using Size-dependent Ru Particles Supported on g-C3N4 Carbon Capture Science & Technology CO2 hydrogenation Ru single atom size effect in-situ DRIFTS CO selectivity |
| title | CO2 Hydrogenation Using Size-dependent Ru Particles Supported on g-C3N4 |
| title_full | CO2 Hydrogenation Using Size-dependent Ru Particles Supported on g-C3N4 |
| title_fullStr | CO2 Hydrogenation Using Size-dependent Ru Particles Supported on g-C3N4 |
| title_full_unstemmed | CO2 Hydrogenation Using Size-dependent Ru Particles Supported on g-C3N4 |
| title_short | CO2 Hydrogenation Using Size-dependent Ru Particles Supported on g-C3N4 |
| title_sort | co2 hydrogenation using size dependent ru particles supported on g c3n4 |
| topic | CO2 hydrogenation Ru single atom size effect in-situ DRIFTS CO selectivity |
| url | http://www.sciencedirect.com/science/article/pii/S2772656824000605 |
| work_keys_str_mv | AT rasmeetsingh co2hydrogenationusingsizedependentruparticlessupportedongc3n4 AT lizhuowang co2hydrogenationusingsizedependentruparticlessupportedongc3n4 AT haoyuesun co2hydrogenationusingsizedependentruparticlessupportedongc3n4 AT junhuang co2hydrogenationusingsizedependentruparticlessupportedongc3n4 |