Bimetallic Pd-Co Nanoparticles Supported on Nitrogen-Doped Reduced Graphene Oxide as Efficient Electrocatalysts for Formic Acid Electrooxidation
<p dir="ltr">In this work, bimetallic Pd<sub>x</sub>Co<sub>y</sub> nanoparticles supported on nitrogen-doped reduced graphene oxide catalysts were synthesized and tested for formic acid oxidation as potentially efficient and durable electrocatalysts. Graphene...
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| مؤلفون آخرون: | , , , , , |
| منشور في: |
2021
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إضافة وسم
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| _version_ | 1864513506039037952 |
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| author | SK Safdar Hossain (19563193) |
| author2 | Mohammad Mudassir Alwi (19563196) Junaid Saleem (14670322) Hussain Taj Al-Hashem (19563199) Gordon McKay (1755814) Said Mansour (8697699) Syed Sadiq Ali (19563202) |
| author2_role | author author author author author author |
| author_facet | SK Safdar Hossain (19563193) Mohammad Mudassir Alwi (19563196) Junaid Saleem (14670322) Hussain Taj Al-Hashem (19563199) Gordon McKay (1755814) Said Mansour (8697699) Syed Sadiq Ali (19563202) |
| author_role | author |
| dc.creator.none.fl_str_mv | SK Safdar Hossain (19563193) Mohammad Mudassir Alwi (19563196) Junaid Saleem (14670322) Hussain Taj Al-Hashem (19563199) Gordon McKay (1755814) Said Mansour (8697699) Syed Sadiq Ali (19563202) |
| dc.date.none.fl_str_mv | 2021-07-28T03:00:00Z |
| dc.identifier.none.fl_str_mv | 10.3390/catal11080910 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Bimetallic_Pd-Co_Nanoparticles_Supported_on_Nitrogen-Doped_Reduced_Graphene_Oxide_as_Efficient_Electrocatalysts_for_Formic_Acid_Electrooxidation/26968474 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Engineering Chemical engineering Materials engineering formic acid oxidation anode catalyst PdxCoy/N-rGO electrocatalyst CO stripping cyclic voltammetry |
| dc.title.none.fl_str_mv | Bimetallic Pd-Co Nanoparticles Supported on Nitrogen-Doped Reduced Graphene Oxide as Efficient Electrocatalysts for Formic Acid Electrooxidation |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">In this work, bimetallic Pd<sub>x</sub>Co<sub>y</sub> nanoparticles supported on nitrogen-doped reduced graphene oxide catalysts were synthesized and tested for formic acid oxidation as potentially efficient and durable electrocatalysts. Graphene oxide was nitrogen doped through hydrothermal chemical reduction with urea as a nitrogen source. The Pd<sub>x</sub>Co<sub>y</sub> nanoparticles were deposited on the nitrogen-doped graphene oxide support using the impregnation-reduction method with sodium borohydride as a reducing agent and sodium citrate dihydrate as a stabilizing agent. The structural features, such as phases, composition, oxidation states, and particle sizes, of the nanoparticles were characterized using X-ray diffraction, transmission electron microscopy, scanning electron microscopy–energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. The Pd nanoparticle sizes in Pd<sub>1</sub>Co<sub>1</sub>/N-rGO, Pd/N-rGO, and Pd<sub>1</sub>Co<sub>1</sub>/CNT were 3.5, 12.51, and 4.62 nm, respectively. The electrochemical performance of the catalysts was determined by CO stripping, cyclic voltammetry, and chronoamperometry. Pd<sub>1</sub>Co<sub>1</sub>/N-rGO showed the highest mass activity of 4833.12 mA<sup>–1</sup> mg Pd, which was twice that of Pd<sub>1</sub>Co<sub>1</sub>/CNT. Moreover, Pd<sub>1</sub>Co<sub>1</sub>/N-rGO showed a steady-state current density of 700 mA<sup>–1</sup> mg Pd after 5000 s in chronoamperometry carried out at +0.35 V. Apart from the well-known bifunctional effect of Co, nitrogen-doped graphene contributed to the performance enhancement of the Pd<sub>1</sub>Co<sub>1</sub>/N-rGO catalyst.</p><p dir="ltr"><br></p><h2>Other Information</h2><p dir="ltr">Published in: Catalysts<br>License: <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank">https://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.3390/catal11080910" target="_blank">https://dx.doi.org/10.3390/catal11080910</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_b9cd4c7a724c7c4f02260219db1f2884 |
| identifier_str_mv | 10.3390/catal11080910 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/26968474 |
| publishDate | 2021 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Bimetallic Pd-Co Nanoparticles Supported on Nitrogen-Doped Reduced Graphene Oxide as Efficient Electrocatalysts for Formic Acid ElectrooxidationSK Safdar Hossain (19563193)Mohammad Mudassir Alwi (19563196)Junaid Saleem (14670322)Hussain Taj Al-Hashem (19563199)Gordon McKay (1755814)Said Mansour (8697699)Syed Sadiq Ali (19563202)EngineeringChemical engineeringMaterials engineeringformic acid oxidationanode catalystPdxCoy/N-rGO electrocatalystCO strippingcyclic voltammetry<p dir="ltr">In this work, bimetallic Pd<sub>x</sub>Co<sub>y</sub> nanoparticles supported on nitrogen-doped reduced graphene oxide catalysts were synthesized and tested for formic acid oxidation as potentially efficient and durable electrocatalysts. Graphene oxide was nitrogen doped through hydrothermal chemical reduction with urea as a nitrogen source. The Pd<sub>x</sub>Co<sub>y</sub> nanoparticles were deposited on the nitrogen-doped graphene oxide support using the impregnation-reduction method with sodium borohydride as a reducing agent and sodium citrate dihydrate as a stabilizing agent. The structural features, such as phases, composition, oxidation states, and particle sizes, of the nanoparticles were characterized using X-ray diffraction, transmission electron microscopy, scanning electron microscopy–energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. The Pd nanoparticle sizes in Pd<sub>1</sub>Co<sub>1</sub>/N-rGO, Pd/N-rGO, and Pd<sub>1</sub>Co<sub>1</sub>/CNT were 3.5, 12.51, and 4.62 nm, respectively. The electrochemical performance of the catalysts was determined by CO stripping, cyclic voltammetry, and chronoamperometry. Pd<sub>1</sub>Co<sub>1</sub>/N-rGO showed the highest mass activity of 4833.12 mA<sup>–1</sup> mg Pd, which was twice that of Pd<sub>1</sub>Co<sub>1</sub>/CNT. Moreover, Pd<sub>1</sub>Co<sub>1</sub>/N-rGO showed a steady-state current density of 700 mA<sup>–1</sup> mg Pd after 5000 s in chronoamperometry carried out at +0.35 V. Apart from the well-known bifunctional effect of Co, nitrogen-doped graphene contributed to the performance enhancement of the Pd<sub>1</sub>Co<sub>1</sub>/N-rGO catalyst.</p><p dir="ltr"><br></p><h2>Other Information</h2><p dir="ltr">Published in: Catalysts<br>License: <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank">https://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.3390/catal11080910" target="_blank">https://dx.doi.org/10.3390/catal11080910</a></p>2021-07-28T03:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.3390/catal11080910https://figshare.com/articles/journal_contribution/Bimetallic_Pd-Co_Nanoparticles_Supported_on_Nitrogen-Doped_Reduced_Graphene_Oxide_as_Efficient_Electrocatalysts_for_Formic_Acid_Electrooxidation/26968474CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/269684742021-07-28T03:00:00Z |
| spellingShingle | Bimetallic Pd-Co Nanoparticles Supported on Nitrogen-Doped Reduced Graphene Oxide as Efficient Electrocatalysts for Formic Acid Electrooxidation SK Safdar Hossain (19563193) Engineering Chemical engineering Materials engineering formic acid oxidation anode catalyst PdxCoy/N-rGO electrocatalyst CO stripping cyclic voltammetry |
| status_str | publishedVersion |
| title | Bimetallic Pd-Co Nanoparticles Supported on Nitrogen-Doped Reduced Graphene Oxide as Efficient Electrocatalysts for Formic Acid Electrooxidation |
| title_full | Bimetallic Pd-Co Nanoparticles Supported on Nitrogen-Doped Reduced Graphene Oxide as Efficient Electrocatalysts for Formic Acid Electrooxidation |
| title_fullStr | Bimetallic Pd-Co Nanoparticles Supported on Nitrogen-Doped Reduced Graphene Oxide as Efficient Electrocatalysts for Formic Acid Electrooxidation |
| title_full_unstemmed | Bimetallic Pd-Co Nanoparticles Supported on Nitrogen-Doped Reduced Graphene Oxide as Efficient Electrocatalysts for Formic Acid Electrooxidation |
| title_short | Bimetallic Pd-Co Nanoparticles Supported on Nitrogen-Doped Reduced Graphene Oxide as Efficient Electrocatalysts for Formic Acid Electrooxidation |
| title_sort | Bimetallic Pd-Co Nanoparticles Supported on Nitrogen-Doped Reduced Graphene Oxide as Efficient Electrocatalysts for Formic Acid Electrooxidation |
| topic | Engineering Chemical engineering Materials engineering formic acid oxidation anode catalyst PdxCoy/N-rGO electrocatalyst CO stripping cyclic voltammetry |