Electro-oxidation of 5-hydroxymethylfurfural by a catalyst containing copper nanoparticles and single copper atoms
Atomic-site electrocatalysts are being considered as potential alternative catalysts due to their exceptionally high atom utilization efficiencies, well-defined active sites and high selectivities. However, the presence of nanoparticles in the single-atom catalysts may affect the catalytic performan...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-03-01
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| Series: | Materials Today Catalysis |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2949754X24000036 |
| _version_ | 1797237845728952320 |
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| author | Yongfang Zhou Yi Shen Hongying Li |
| author_facet | Yongfang Zhou Yi Shen Hongying Li |
| author_sort | Yongfang Zhou |
| collection | DOAJ |
| description | Atomic-site electrocatalysts are being considered as potential alternative catalysts due to their exceptionally high atom utilization efficiencies, well-defined active sites and high selectivities. However, the presence of nanoparticles in the single-atom catalysts may affect the catalytic performance. Herein, single-copper-atoms and copper nanoparticles co-embedded in nitrogen-doped carbon nanosheets (CuNPs@Cu/NCNSs) were synthesized for 5-hydroxymethylfurfural electro-oxidation. Single copper atoms supported on nitrogen-doped carbon nanosheets (Cu/NCNSs) and copper nanoparticles supported on carbon (CuNPs/C) were also synthesized for comparison. The CuNPs/C exhibited high efficiency in electro-oxidation of HMF to 2,5-furandicarboxylic acid (FDCA) at a low potential of 1.42 V. However, the CuNPs@Cu/NCNSs showed a high 5-formyl-2-furancarboxylic acid (FFCA) selectivity of 86.7%. Oxalic acid (OA) treatment experiments showed that single copper atoms played a major role on the oxidation of HMF to FFCA. Cu(OH)2 active species generated by electrochemical oxidation were demonstrated as the primary catalytic sites for HMF oxidation on the CuNPs/C. In-situ Raman spectra results demonstrated that HMF oxidation on the CuNPs/C followed the path to 5-hydroxymethyl-2-furancarboxylic acid (HFCA), while on the CuNPs@Cu/NCNSs and Cu/NCNSs, HMF was oxidized along the 5-diformylfuran (DFF) pathway. |
| first_indexed | 2024-04-24T17:26:13Z |
| format | Article |
| id | doaj.art-b7d16737b735463b8978c016c9d06dcc |
| institution | Directory Open Access Journal |
| issn | 2949-754X |
| language | English |
| last_indexed | 2024-04-24T17:26:13Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials Today Catalysis |
| spelling | doaj.art-b7d16737b735463b8978c016c9d06dcc2024-03-28T06:40:36ZengElsevierMaterials Today Catalysis2949-754X2024-03-014100041Electro-oxidation of 5-hydroxymethylfurfural by a catalyst containing copper nanoparticles and single copper atomsYongfang Zhou0Yi Shen1Hongying Li2School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, ChinaSchool of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou 510640, China; China-Singapore International Joint Research Institute, Guangzhou Knowledge City, Guangzhou 510663, China; Corresponding author at: School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.Institute of High-Performance Computing, Agency for Science, Technology and Research, 138632, SingaporeAtomic-site electrocatalysts are being considered as potential alternative catalysts due to their exceptionally high atom utilization efficiencies, well-defined active sites and high selectivities. However, the presence of nanoparticles in the single-atom catalysts may affect the catalytic performance. Herein, single-copper-atoms and copper nanoparticles co-embedded in nitrogen-doped carbon nanosheets (CuNPs@Cu/NCNSs) were synthesized for 5-hydroxymethylfurfural electro-oxidation. Single copper atoms supported on nitrogen-doped carbon nanosheets (Cu/NCNSs) and copper nanoparticles supported on carbon (CuNPs/C) were also synthesized for comparison. The CuNPs/C exhibited high efficiency in electro-oxidation of HMF to 2,5-furandicarboxylic acid (FDCA) at a low potential of 1.42 V. However, the CuNPs@Cu/NCNSs showed a high 5-formyl-2-furancarboxylic acid (FFCA) selectivity of 86.7%. Oxalic acid (OA) treatment experiments showed that single copper atoms played a major role on the oxidation of HMF to FFCA. Cu(OH)2 active species generated by electrochemical oxidation were demonstrated as the primary catalytic sites for HMF oxidation on the CuNPs/C. In-situ Raman spectra results demonstrated that HMF oxidation on the CuNPs/C followed the path to 5-hydroxymethyl-2-furancarboxylic acid (HFCA), while on the CuNPs@Cu/NCNSs and Cu/NCNSs, HMF was oxidized along the 5-diformylfuran (DFF) pathway.http://www.sciencedirect.com/science/article/pii/S2949754X24000036HMF conversionSingle-copper-atom electrocatalystBiomass conversionOperando electrochemical Raman spectra |
| spellingShingle | Yongfang Zhou Yi Shen Hongying Li Electro-oxidation of 5-hydroxymethylfurfural by a catalyst containing copper nanoparticles and single copper atoms Materials Today Catalysis HMF conversion Single-copper-atom electrocatalyst Biomass conversion Operando electrochemical Raman spectra |
| title | Electro-oxidation of 5-hydroxymethylfurfural by a catalyst containing copper nanoparticles and single copper atoms |
| title_full | Electro-oxidation of 5-hydroxymethylfurfural by a catalyst containing copper nanoparticles and single copper atoms |
| title_fullStr | Electro-oxidation of 5-hydroxymethylfurfural by a catalyst containing copper nanoparticles and single copper atoms |
| title_full_unstemmed | Electro-oxidation of 5-hydroxymethylfurfural by a catalyst containing copper nanoparticles and single copper atoms |
| title_short | Electro-oxidation of 5-hydroxymethylfurfural by a catalyst containing copper nanoparticles and single copper atoms |
| title_sort | electro oxidation of 5 hydroxymethylfurfural by a catalyst containing copper nanoparticles and single copper atoms |
| topic | HMF conversion Single-copper-atom electrocatalyst Biomass conversion Operando electrochemical Raman spectra |
| url | http://www.sciencedirect.com/science/article/pii/S2949754X24000036 |
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