Electrooxidation of methanol on Ag, AgNi, and AgCo catalysts prepared by combustion synthesis technique
<p>Herein, we report the synthesis of silver-based electrocatalysts (Ag/C, AgCo/C, and AgNi/C) using solution combustion method and their performance towards methanol oxidation reaction. Detailed structural and microscopic analysis confirmed the formation of graphitic carbon, synthesis of crys...
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| مؤلفون آخرون: | , , , , , |
| منشور في: |
2023
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| _version_ | 1864513565156704256 |
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| author | Afdhal Yuda (14778310) |
| author2 | Anand Kumar (14152023) Ibrahim Abu Reesh (14778313) Christopher K. Russell (4726803) Jeffrey T. Miller (1359465) Mohammed Ali Saleh Saad (14778316) Mohammed J. Al‐Marri (14778265) |
| author2_role | author author author author author author |
| author_facet | Afdhal Yuda (14778310) Anand Kumar (14152023) Ibrahim Abu Reesh (14778313) Christopher K. Russell (4726803) Jeffrey T. Miller (1359465) Mohammed Ali Saleh Saad (14778316) Mohammed J. Al‐Marri (14778265) |
| author_role | author |
| dc.creator.none.fl_str_mv | Afdhal Yuda (14778310) Anand Kumar (14152023) Ibrahim Abu Reesh (14778313) Christopher K. Russell (4726803) Jeffrey T. Miller (1359465) Mohammed Ali Saleh Saad (14778316) Mohammed J. Al‐Marri (14778265) |
| dc.date.none.fl_str_mv | 2023-03-16T06:22:39Z |
| dc.identifier.none.fl_str_mv | 10.1002/er.8696 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Electrooxidation_of_methanol_on_Ag__AgNi__and__AgCo__catalysts_prepared_by_combustion_synthesis_technique/22258078 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Chemical sciences Physical chemistry Energy Engineering and Power Technology Fuel Technology Nuclear Energy and Engineering Renewable Energy, Sustainability and the Environment |
| dc.title.none.fl_str_mv | Electrooxidation of methanol on Ag, AgNi, and AgCo catalysts prepared by combustion synthesis technique |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p>Herein, we report the synthesis of silver-based electrocatalysts (Ag/C, AgCo/C, and AgNi/C) using solution combustion method and their performance towards methanol oxidation reaction. Detailed structural and microscopic analysis confirmed the formation of graphitic carbon, synthesis of crystalline phases with high porosity in all the three electrocatalysts. X-ray photoelectron spectroscopic (XPS) analysis showed a high concentration of Ag<sub>2</sub>O (or Ag<sup>+</sup>) on AgNi/C, whereas AgCo/C exhibited a high concentration AgO (or Ag<sup>2+</sup>) on the surface. XPS analysis on C 1s confirmed the highest concentrations of the sp<sup>2</sup> hybridized C—C bond on Ag/C, C<sup>‗‗</sup>O on AgNi/C, and O—C<sup>‗‗</sup>O bond on AgCo/C, respectively. The X-ray absorption spectroscopy (XAS) analysis on Ag edge showed a similarity in the bond lengths in AgCo and AgNi samples to that of bulk silver, that has a bond length of 2.89 Å, with only silver-silver scattering and the absence of a different or a nonsilver metal in the nanoparticles. This indicates that there is no Ag-M alloying. Nonetheless, a significant difference in particle sizes was observed, with 2.5 and 6 nm, respectively for AgNi and AgCo. Methanol electrooxidation experiments performed on the electrocatalysts indicated AgNi/C to show better performance in comparison to AgCo/C and Ag/C. Anodic polarization curves obtained from linear sweep voltammetry (LSV) measurements demonstrated a superior performance of AgNi/C with an onset potential of 0.41 V. In addition, 20 h chronoamperometry experiment also confirmed a sustained superior performance of AgNi/C catalyst, which could be due to smaller particle size and stabilization of Ag+ on the surface of the catalyst.</p> <h2>Other Information</h2> <p>Published in: International Journal of Energy Research<br> License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br> See article on publisher's website: <a href="http://dx.doi.org/10.1002/er.8696" target="_blank">http://dx.doi.org/10.1002/er.8696</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_0610e7a4716cf0d1684bc7d0b8b06c7b |
| identifier_str_mv | 10.1002/er.8696 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/22258078 |
| publishDate | 2023 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Electrooxidation of methanol on Ag, AgNi, and AgCo catalysts prepared by combustion synthesis techniqueAfdhal Yuda (14778310)Anand Kumar (14152023)Ibrahim Abu Reesh (14778313)Christopher K. Russell (4726803)Jeffrey T. Miller (1359465)Mohammed Ali Saleh Saad (14778316)Mohammed J. Al‐Marri (14778265)Chemical sciencesPhysical chemistryEnergy Engineering and Power TechnologyFuel TechnologyNuclear Energy and EngineeringRenewable Energy, Sustainability and the Environment<p>Herein, we report the synthesis of silver-based electrocatalysts (Ag/C, AgCo/C, and AgNi/C) using solution combustion method and their performance towards methanol oxidation reaction. Detailed structural and microscopic analysis confirmed the formation of graphitic carbon, synthesis of crystalline phases with high porosity in all the three electrocatalysts. X-ray photoelectron spectroscopic (XPS) analysis showed a high concentration of Ag<sub>2</sub>O (or Ag<sup>+</sup>) on AgNi/C, whereas AgCo/C exhibited a high concentration AgO (or Ag<sup>2+</sup>) on the surface. XPS analysis on C 1s confirmed the highest concentrations of the sp<sup>2</sup> hybridized C—C bond on Ag/C, C<sup>‗‗</sup>O on AgNi/C, and O—C<sup>‗‗</sup>O bond on AgCo/C, respectively. The X-ray absorption spectroscopy (XAS) analysis on Ag edge showed a similarity in the bond lengths in AgCo and AgNi samples to that of bulk silver, that has a bond length of 2.89 Å, with only silver-silver scattering and the absence of a different or a nonsilver metal in the nanoparticles. This indicates that there is no Ag-M alloying. Nonetheless, a significant difference in particle sizes was observed, with 2.5 and 6 nm, respectively for AgNi and AgCo. Methanol electrooxidation experiments performed on the electrocatalysts indicated AgNi/C to show better performance in comparison to AgCo/C and Ag/C. Anodic polarization curves obtained from linear sweep voltammetry (LSV) measurements demonstrated a superior performance of AgNi/C with an onset potential of 0.41 V. In addition, 20 h chronoamperometry experiment also confirmed a sustained superior performance of AgNi/C catalyst, which could be due to smaller particle size and stabilization of Ag+ on the surface of the catalyst.</p> <h2>Other Information</h2> <p>Published in: International Journal of Energy Research<br> License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br> See article on publisher's website: <a href="http://dx.doi.org/10.1002/er.8696" target="_blank">http://dx.doi.org/10.1002/er.8696</a></p>2023-03-16T06:22:39ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1002/er.8696https://figshare.com/articles/journal_contribution/Electrooxidation_of_methanol_on_Ag__AgNi__and__AgCo__catalysts_prepared_by_combustion_synthesis_technique/22258078CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/222580782023-03-16T06:22:39Z |
| spellingShingle | Electrooxidation of methanol on Ag, AgNi, and AgCo catalysts prepared by combustion synthesis technique Afdhal Yuda (14778310) Chemical sciences Physical chemistry Energy Engineering and Power Technology Fuel Technology Nuclear Energy and Engineering Renewable Energy, Sustainability and the Environment |
| status_str | publishedVersion |
| title | Electrooxidation of methanol on Ag, AgNi, and AgCo catalysts prepared by combustion synthesis technique |
| title_full | Electrooxidation of methanol on Ag, AgNi, and AgCo catalysts prepared by combustion synthesis technique |
| title_fullStr | Electrooxidation of methanol on Ag, AgNi, and AgCo catalysts prepared by combustion synthesis technique |
| title_full_unstemmed | Electrooxidation of methanol on Ag, AgNi, and AgCo catalysts prepared by combustion synthesis technique |
| title_short | Electrooxidation of methanol on Ag, AgNi, and AgCo catalysts prepared by combustion synthesis technique |
| title_sort | Electrooxidation of methanol on Ag, AgNi, and AgCo catalysts prepared by combustion synthesis technique |
| topic | Chemical sciences Physical chemistry Energy Engineering and Power Technology Fuel Technology Nuclear Energy and Engineering Renewable Energy, Sustainability and the Environment |