Sulfur-vulcanized CoFe2O4 with high-efficiency photo-to-thermal conversion for enhanced CO2 reduction and mechanistic insights into selectivity
Semiconductor photocatalysts often exhibit low CO2 reduction activity due to inherent limitations. Photothermal (PTT) processes have emerged as crucial for enhancing this activity, yet investigations in this area remain sparse. This study introduces a novel CoFe2O3.5S0.5 photothermal catalyst, synth...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Carbon Capture Science & Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S277265682500017X |
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| author | Xiaoke Chen Ming Cai Pengwei Huo Yan Yan Yue Zhang Pengxin Li Zhi Zhu |
| author_facet | Xiaoke Chen Ming Cai Pengwei Huo Yan Yan Yue Zhang Pengxin Li Zhi Zhu |
| author_sort | Xiaoke Chen |
| collection | DOAJ |
| description | Semiconductor photocatalysts often exhibit low CO2 reduction activity due to inherent limitations. Photothermal (PTT) processes have emerged as crucial for enhancing this activity, yet investigations in this area remain sparse. This study introduces a novel CoFe2O3.5S0.5 photothermal catalyst, synthesized via hydrothermal methods with particle sizes ranging from 5 to 10 nm. Comparative analysis reveals that the CO yield from the as-prepared catalyst surpasses that of CoFe2O4 by 8.9 times, achieving 100% selectivity. The integration of sulfur significantly boosts near-infrared light absorption and promotes the conversion of light to thermal energy, enabling the catalyst to reach 185 °C within 300 ss. This rapid temperature escalation facilitates the swift separation of charge carriers. Additionally, the adsorption of CO2 and the dynamics of surface intermediates were thoroughly examined using in situ FTIR spectroscopy and theoretical models, identifying COOH* as the pivotal intermediate and the bottleneck in the reaction pathway. Our findings rectify gaps in prior studies and offer a foundational reference for further exploration of product selectivity in the photocatalytic reduction of CO2. |
| format | Article |
| id | doaj-art-cdb602aaa31546c18ff2262ad00217a4 |
| institution | Kabale University |
| issn | 2772-6568 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbon Capture Science & Technology |
| spelling | doaj-art-cdb602aaa31546c18ff2262ad00217a42025-02-12T05:33:09ZengElsevierCarbon Capture Science & Technology2772-65682025-03-0114100377Sulfur-vulcanized CoFe2O4 with high-efficiency photo-to-thermal conversion for enhanced CO2 reduction and mechanistic insights into selectivityXiaoke Chen0Ming Cai1Pengwei Huo2Yan Yan3Yue Zhang4Pengxin Li5Zhi Zhu6School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR ChinaCollege of Physics, Jilin Normal University, Siping 130023, PR ChinaSchool of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR ChinaSchool of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR ChinaSchool of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China; Corresponding authors.School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China; Corresponding authors.School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China; Jiangsu Chunlan Clean Energy Academy Co.,Ltd. Taizhou 225300, PR China; Corresponding author at: Institute for Advanced Materials, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.Semiconductor photocatalysts often exhibit low CO2 reduction activity due to inherent limitations. Photothermal (PTT) processes have emerged as crucial for enhancing this activity, yet investigations in this area remain sparse. This study introduces a novel CoFe2O3.5S0.5 photothermal catalyst, synthesized via hydrothermal methods with particle sizes ranging from 5 to 10 nm. Comparative analysis reveals that the CO yield from the as-prepared catalyst surpasses that of CoFe2O4 by 8.9 times, achieving 100% selectivity. The integration of sulfur significantly boosts near-infrared light absorption and promotes the conversion of light to thermal energy, enabling the catalyst to reach 185 °C within 300 ss. This rapid temperature escalation facilitates the swift separation of charge carriers. Additionally, the adsorption of CO2 and the dynamics of surface intermediates were thoroughly examined using in situ FTIR spectroscopy and theoretical models, identifying COOH* as the pivotal intermediate and the bottleneck in the reaction pathway. Our findings rectify gaps in prior studies and offer a foundational reference for further exploration of product selectivity in the photocatalytic reduction of CO2.http://www.sciencedirect.com/science/article/pii/S277265682500017XPhoto-to-thermalSulfur-vulcanized culfur-Vulcanized CoFe2O4carbon dioxide reductionDensity functional theoryProduct selectivity |
| spellingShingle | Xiaoke Chen Ming Cai Pengwei Huo Yan Yan Yue Zhang Pengxin Li Zhi Zhu Sulfur-vulcanized CoFe2O4 with high-efficiency photo-to-thermal conversion for enhanced CO2 reduction and mechanistic insights into selectivity Carbon Capture Science & Technology Photo-to-thermal Sulfur-vulcanized culfur-Vulcanized CoFe2O4 carbon dioxide reduction Density functional theory Product selectivity |
| title | Sulfur-vulcanized CoFe2O4 with high-efficiency photo-to-thermal conversion for enhanced CO2 reduction and mechanistic insights into selectivity |
| title_full | Sulfur-vulcanized CoFe2O4 with high-efficiency photo-to-thermal conversion for enhanced CO2 reduction and mechanistic insights into selectivity |
| title_fullStr | Sulfur-vulcanized CoFe2O4 with high-efficiency photo-to-thermal conversion for enhanced CO2 reduction and mechanistic insights into selectivity |
| title_full_unstemmed | Sulfur-vulcanized CoFe2O4 with high-efficiency photo-to-thermal conversion for enhanced CO2 reduction and mechanistic insights into selectivity |
| title_short | Sulfur-vulcanized CoFe2O4 with high-efficiency photo-to-thermal conversion for enhanced CO2 reduction and mechanistic insights into selectivity |
| title_sort | sulfur vulcanized cofe2o4 with high efficiency photo to thermal conversion for enhanced co2 reduction and mechanistic insights into selectivity |
| topic | Photo-to-thermal Sulfur-vulcanized culfur-Vulcanized CoFe2O4 carbon dioxide reduction Density functional theory Product selectivity |
| url | http://www.sciencedirect.com/science/article/pii/S277265682500017X |
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