Balancing the Aggregation of Cobalt Phthalocyanine on Carbon Nanohorn for Efficient H2O2 electrosynthesis in Neutral Electrolyte
Abstract Oxygen reduction reaction (ORR) driven by renewable electricity in neutral electrolyte presents a promising way for generating H2O2, which is suitable for daily sanitation and hygiene management. Cobalt phthalocyanine (CoPc) serves as an effective molecular electrocatalyst, providing active...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2025-05-01
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| Series: | ChemElectroChem |
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| Online Access: | https://doi.org/10.1002/celc.202400650 |
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| author | Yiqi Ding Zhuo Xing Chunguang Kuai Feng Ryan Wang Yuzheng Guo |
| author_facet | Yiqi Ding Zhuo Xing Chunguang Kuai Feng Ryan Wang Yuzheng Guo |
| author_sort | Yiqi Ding |
| collection | DOAJ |
| description | Abstract Oxygen reduction reaction (ORR) driven by renewable electricity in neutral electrolyte presents a promising way for generating H2O2, which is suitable for daily sanitation and hygiene management. Cobalt phthalocyanine (CoPc) serves as an effective molecular electrocatalyst, providing active sites to facilitate H2O2 generation during ORR through a uniform distribution on carbon supports. However, the catalytic performance currently falls short of industrial application requirements. Herein, we employed carbon nanohorns with abundant oxygen functional groups (CNH(O)) to support CoPc, thereby optimizing the distribution of CoPc and enhancing the generation of active sites with electron‐deficient Co centres. Control experiments and characterizations demonstrate the electron‐deficient of Co centres is dependent on the degree of CoPc aggregation, highlighting a trade‐off between loading weight and distribution of CoPc. Then, a 4% loading weight of CoPc on CNH(O) exhibited the optimal performance of H2O2 generation, achieving a H2O2 current density of 483 mA cm−2 at a potential of 0.3 V vs RHE with a Faradaic efficiency of 64 %. |
| format | Article |
| id | doaj-art-d72d6b4c2ee34639a727dc9e5dc4d7b2 |
| institution | Kabale University |
| issn | 2196-0216 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | ChemElectroChem |
| spelling | doaj-art-d72d6b4c2ee34639a727dc9e5dc4d7b22025-08-20T03:52:32ZengWiley-VCHChemElectroChem2196-02162025-05-01129n/an/a10.1002/celc.202400650Balancing the Aggregation of Cobalt Phthalocyanine on Carbon Nanohorn for Efficient H2O2 electrosynthesis in Neutral ElectrolyteYiqi Ding0Zhuo Xing1Chunguang Kuai2Feng Ryan Wang3Yuzheng Guo4The Institute of Technological Sciences, School of Power and Mechanical Engineering Wuhan University Wuhan 430072 Hubei ChinaCollege of Physical Science and Technology Central China Normal University Wuhan 430079 Hubei ChinaMaterials and Catalysis Laboratory, Department of Chemical Engineering University College London London WC1E 7JE United KingdomMaterials and Catalysis Laboratory, Department of Chemical Engineering University College London London WC1E 7JE United KingdomThe Institute of Technological Sciences, School of Power and Mechanical Engineering Wuhan University Wuhan 430072 Hubei ChinaAbstract Oxygen reduction reaction (ORR) driven by renewable electricity in neutral electrolyte presents a promising way for generating H2O2, which is suitable for daily sanitation and hygiene management. Cobalt phthalocyanine (CoPc) serves as an effective molecular electrocatalyst, providing active sites to facilitate H2O2 generation during ORR through a uniform distribution on carbon supports. However, the catalytic performance currently falls short of industrial application requirements. Herein, we employed carbon nanohorns with abundant oxygen functional groups (CNH(O)) to support CoPc, thereby optimizing the distribution of CoPc and enhancing the generation of active sites with electron‐deficient Co centres. Control experiments and characterizations demonstrate the electron‐deficient of Co centres is dependent on the degree of CoPc aggregation, highlighting a trade‐off between loading weight and distribution of CoPc. Then, a 4% loading weight of CoPc on CNH(O) exhibited the optimal performance of H2O2 generation, achieving a H2O2 current density of 483 mA cm−2 at a potential of 0.3 V vs RHE with a Faradaic efficiency of 64 %.https://doi.org/10.1002/celc.202400650Carbon nanohornsMolecular catalystsCobalt phthalocyanineElectrochemistry oxygen reductionHydrogen peroxide |
| spellingShingle | Yiqi Ding Zhuo Xing Chunguang Kuai Feng Ryan Wang Yuzheng Guo Balancing the Aggregation of Cobalt Phthalocyanine on Carbon Nanohorn for Efficient H2O2 electrosynthesis in Neutral Electrolyte ChemElectroChem Carbon nanohorns Molecular catalysts Cobalt phthalocyanine Electrochemistry oxygen reduction Hydrogen peroxide |
| title | Balancing the Aggregation of Cobalt Phthalocyanine on Carbon Nanohorn for Efficient H2O2 electrosynthesis in Neutral Electrolyte |
| title_full | Balancing the Aggregation of Cobalt Phthalocyanine on Carbon Nanohorn for Efficient H2O2 electrosynthesis in Neutral Electrolyte |
| title_fullStr | Balancing the Aggregation of Cobalt Phthalocyanine on Carbon Nanohorn for Efficient H2O2 electrosynthesis in Neutral Electrolyte |
| title_full_unstemmed | Balancing the Aggregation of Cobalt Phthalocyanine on Carbon Nanohorn for Efficient H2O2 electrosynthesis in Neutral Electrolyte |
| title_short | Balancing the Aggregation of Cobalt Phthalocyanine on Carbon Nanohorn for Efficient H2O2 electrosynthesis in Neutral Electrolyte |
| title_sort | balancing the aggregation of cobalt phthalocyanine on carbon nanohorn for efficient h2o2 electrosynthesis in neutral electrolyte |
| topic | Carbon nanohorns Molecular catalysts Cobalt phthalocyanine Electrochemistry oxygen reduction Hydrogen peroxide |
| url | https://doi.org/10.1002/celc.202400650 |
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