Cu‐doped Ba0.5Sr0.5FeO3‐δ for electrochemical synthesis of hydrogen peroxide via a 2‐electron oxygen reduction reaction1
Abstract Electrochemical synthesis of hydrogen peroxide (H2O2) via a two‐electron (2e–) oxygen reduction reaction (ORR) has emerged as a sustainable synthesis route compared to the anthraquinone oxidation synthesis process. Ba0.5Sr0.5Fe(1‐x)CuxO3‐δ perovskite is a particularly interesting electrocat...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-06-01
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| Series: | Electrochemical Science Advances |
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| Online Access: | https://doi.org/10.1002/elsa.202100140 |
| _version_ | 1827924588269404160 |
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| author | Senthil Velan Venkatesan Amir Hassan Bagherzadeh Mostaghimi Venkataraman Thangadurai Samira Siahrostami |
| author_facet | Senthil Velan Venkatesan Amir Hassan Bagherzadeh Mostaghimi Venkataraman Thangadurai Samira Siahrostami |
| author_sort | Senthil Velan Venkatesan |
| collection | DOAJ |
| description | Abstract Electrochemical synthesis of hydrogen peroxide (H2O2) via a two‐electron (2e–) oxygen reduction reaction (ORR) has emerged as a sustainable synthesis route compared to the anthraquinone oxidation synthesis process. Ba0.5Sr0.5Fe(1‐x)CuxO3‐δ perovskite is a particularly interesting electrocatalyst for ORR applications owing to its doping flexibility. In this study, we use experimental and computation approaches to study Ba0.5Sr0.5FeO3‐δ with and without copper doping at the B‐site for 2e– ORR. Our electrochemical measurements in oxygen‐saturated alkaline solution show that the selectivity of perovskite electrocatalyst increases from 30% to 65% with (0.05) copper doping in the B‐site and the onset potential is decreased. Density functional theory calculations are used to unravel the role of copper in driving high activity and selectivity toward 2e– ORR. Site‐specific engineering of Ba0.5Sr0.5FeO3‐δ by copper doping in the B‐site exposed unique adsorption sites with improved activity and selectivity for H2O2 formation. |
| first_indexed | 2024-03-13T05:12:46Z |
| format | Article |
| id | doaj.art-245b0c0faea64f93b828d7bf88bd844e |
| institution | Directory Open Access Journal |
| issn | 2698-5977 |
| language | English |
| last_indexed | 2024-03-13T05:12:46Z |
| publishDate | 2023-06-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Electrochemical Science Advances |
| spelling | doaj.art-245b0c0faea64f93b828d7bf88bd844e2023-06-16T04:53:52ZengWiley-VCHElectrochemical Science Advances2698-59772023-06-0133n/an/a10.1002/elsa.202100140Cu‐doped Ba0.5Sr0.5FeO3‐δ for electrochemical synthesis of hydrogen peroxide via a 2‐electron oxygen reduction reaction1Senthil Velan Venkatesan0Amir Hassan Bagherzadeh Mostaghimi1Venkataraman Thangadurai2Samira Siahrostami3Department of Chemistry University of Calgary Calgary CanadaDepartment of Chemistry University of Calgary Calgary CanadaDepartment of Chemistry University of Calgary Calgary CanadaDepartment of Chemistry University of Calgary Calgary CanadaAbstract Electrochemical synthesis of hydrogen peroxide (H2O2) via a two‐electron (2e–) oxygen reduction reaction (ORR) has emerged as a sustainable synthesis route compared to the anthraquinone oxidation synthesis process. Ba0.5Sr0.5Fe(1‐x)CuxO3‐δ perovskite is a particularly interesting electrocatalyst for ORR applications owing to its doping flexibility. In this study, we use experimental and computation approaches to study Ba0.5Sr0.5FeO3‐δ with and without copper doping at the B‐site for 2e– ORR. Our electrochemical measurements in oxygen‐saturated alkaline solution show that the selectivity of perovskite electrocatalyst increases from 30% to 65% with (0.05) copper doping in the B‐site and the onset potential is decreased. Density functional theory calculations are used to unravel the role of copper in driving high activity and selectivity toward 2e– ORR. Site‐specific engineering of Ba0.5Sr0.5FeO3‐δ by copper doping in the B‐site exposed unique adsorption sites with improved activity and selectivity for H2O2 formation.https://doi.org/10.1002/elsa.202100140Density functional theory calculationselectrochemical synthesis of hydrogen peroxideperovskitestwo‐electron oxygen reduction reaction |
| spellingShingle | Senthil Velan Venkatesan Amir Hassan Bagherzadeh Mostaghimi Venkataraman Thangadurai Samira Siahrostami Cu‐doped Ba0.5Sr0.5FeO3‐δ for electrochemical synthesis of hydrogen peroxide via a 2‐electron oxygen reduction reaction1 Electrochemical Science Advances Density functional theory calculations electrochemical synthesis of hydrogen peroxide perovskites two‐electron oxygen reduction reaction |
| title | Cu‐doped Ba0.5Sr0.5FeO3‐δ for electrochemical synthesis of hydrogen peroxide via a 2‐electron oxygen reduction reaction1 |
| title_full | Cu‐doped Ba0.5Sr0.5FeO3‐δ for electrochemical synthesis of hydrogen peroxide via a 2‐electron oxygen reduction reaction1 |
| title_fullStr | Cu‐doped Ba0.5Sr0.5FeO3‐δ for electrochemical synthesis of hydrogen peroxide via a 2‐electron oxygen reduction reaction1 |
| title_full_unstemmed | Cu‐doped Ba0.5Sr0.5FeO3‐δ for electrochemical synthesis of hydrogen peroxide via a 2‐electron oxygen reduction reaction1 |
| title_short | Cu‐doped Ba0.5Sr0.5FeO3‐δ for electrochemical synthesis of hydrogen peroxide via a 2‐electron oxygen reduction reaction1 |
| title_sort | cu doped ba0 5sr0 5feo3 δ for electrochemical synthesis of hydrogen peroxide via a 2 electron oxygen reduction reaction1 |
| topic | Density functional theory calculations electrochemical synthesis of hydrogen peroxide perovskites two‐electron oxygen reduction reaction |
| url | https://doi.org/10.1002/elsa.202100140 |
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