Electrooxidation behavior of ethanol toward carbon microbead-encapsulated ZnO particles derived from coffee waste
<p dir="ltr">Carbon microbead-encapsulated ZnO (CM-ZnO) particles have been synthesized from the spent coffee ground (SCG) by chemical activation with ZnCl<sub>2</sub> followed by calcination at 700 ℃ in N<sub>2</sub> environment. Interestingly, ZnCl<sub>...
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| مؤلفون آخرون: | , , , |
| منشور في: |
2020
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إضافة وسم
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| _version_ | 1864513567626100736 |
|---|---|
| author | Zafar Khan Ghouri (1407580) |
| author2 | Khaled Elsaid (11084793) Ahmed Abdel-Wahab (1748986) Ahmed Abdala (5743205) Mohammad Zahid Farhad (14151156) |
| author2_role | author author author author |
| author_facet | Zafar Khan Ghouri (1407580) Khaled Elsaid (11084793) Ahmed Abdel-Wahab (1748986) Ahmed Abdala (5743205) Mohammad Zahid Farhad (14151156) |
| author_role | author |
| dc.creator.none.fl_str_mv | Zafar Khan Ghouri (1407580) Khaled Elsaid (11084793) Ahmed Abdel-Wahab (1748986) Ahmed Abdala (5743205) Mohammad Zahid Farhad (14151156) |
| dc.date.none.fl_str_mv | 2020-03-18T21:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1007/s10854-020-03209-w |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Electrooxidation_behavior_of_ethanol_toward_carbon_microbead-encapsulated_ZnO_particles_derived_from_coffee_waste/21597321 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Engineering Electronics, sensors and digital hardware Physical sciences Condensed matter physics Carbon microbeads (CM) Zinc oxide (ZnO) Spent coffee ground (SCG) Chemical activation Electrooxidation Ethanol electrooxidation |
| dc.title.none.fl_str_mv | Electrooxidation behavior of ethanol toward carbon microbead-encapsulated ZnO particles derived from coffee waste |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">Carbon microbead-encapsulated ZnO (CM-ZnO) particles have been synthesized from the spent coffee ground (SCG) by chemical activation with ZnCl<sub>2</sub> followed by calcination at 700 ℃ in N<sub>2</sub> environment. Interestingly, ZnCl<sub>2</sub> can act as an activating agent as well as a precursor for ZnO particles. The structure of the core and shell of the CM-ZnO was investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. Moreover, X-ray diffraction (XRD) and energy-dispersive spectroscopy (EDS) studies confirmed the presence of the encapsulated ZnO particles. The Brunauer–Emmett–Teller (BET) and Barrett–Joyner–Halenda (BJH) plots showed a well-developed porous structure with a specific surface area of 210 m<sup>2</sup>/g, average pore volume of 1.12 cm<sup>3</sup>/g, and an average pore radius of 31.7 Å. The electrooxidation behavior of ethanol toward the synthesized CM-ZnO was then studied using cyclic voltammetry (CV) technique. For comparison, two types of modified electrodes were prepared: the first one with the non-activated SCG and the second one with the CM-ZnO. The electrochemical measurements of the prepared CM-ZnO demonstrated higher electrocatalytic activity with a current density of ~ 35 mA/cm<sup>2</sup> at 0.4 V vs. Ag/AgCl for ethanol electrooxidation in an alkaline medium. The electrochemical measurements specified that the presence of ZnO particles and the high surface area of the activated sample have a significant influence on electrooxidation activity. Therefore, the introduced CM-ZnO particles could be an alternative and effective non-precious electrocatalyst for ethanol electrooxidation.</p><h2>Other Information</h2><p dir="ltr">Published in: Journal of Materials Science: Materials in Electronics<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="http://dx.doi.org/10.1007/s10854-020-03209-w" target="_blank">http://dx.doi.org/10.1007/s10854-020-03209-w</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_5649c04efa3dc1d63595b0967dbabc4d |
| identifier_str_mv | 10.1007/s10854-020-03209-w |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/21597321 |
| publishDate | 2020 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Electrooxidation behavior of ethanol toward carbon microbead-encapsulated ZnO particles derived from coffee wasteZafar Khan Ghouri (1407580)Khaled Elsaid (11084793)Ahmed Abdel-Wahab (1748986)Ahmed Abdala (5743205)Mohammad Zahid Farhad (14151156)EngineeringElectronics, sensors and digital hardwarePhysical sciencesCondensed matter physicsCarbon microbeads (CM)Zinc oxide (ZnO)Spent coffee ground (SCG)Chemical activationElectrooxidationEthanol electrooxidation<p dir="ltr">Carbon microbead-encapsulated ZnO (CM-ZnO) particles have been synthesized from the spent coffee ground (SCG) by chemical activation with ZnCl<sub>2</sub> followed by calcination at 700 ℃ in N<sub>2</sub> environment. Interestingly, ZnCl<sub>2</sub> can act as an activating agent as well as a precursor for ZnO particles. The structure of the core and shell of the CM-ZnO was investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. Moreover, X-ray diffraction (XRD) and energy-dispersive spectroscopy (EDS) studies confirmed the presence of the encapsulated ZnO particles. The Brunauer–Emmett–Teller (BET) and Barrett–Joyner–Halenda (BJH) plots showed a well-developed porous structure with a specific surface area of 210 m<sup>2</sup>/g, average pore volume of 1.12 cm<sup>3</sup>/g, and an average pore radius of 31.7 Å. The electrooxidation behavior of ethanol toward the synthesized CM-ZnO was then studied using cyclic voltammetry (CV) technique. For comparison, two types of modified electrodes were prepared: the first one with the non-activated SCG and the second one with the CM-ZnO. The electrochemical measurements of the prepared CM-ZnO demonstrated higher electrocatalytic activity with a current density of ~ 35 mA/cm<sup>2</sup> at 0.4 V vs. Ag/AgCl for ethanol electrooxidation in an alkaline medium. The electrochemical measurements specified that the presence of ZnO particles and the high surface area of the activated sample have a significant influence on electrooxidation activity. Therefore, the introduced CM-ZnO particles could be an alternative and effective non-precious electrocatalyst for ethanol electrooxidation.</p><h2>Other Information</h2><p dir="ltr">Published in: Journal of Materials Science: Materials in Electronics<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="http://dx.doi.org/10.1007/s10854-020-03209-w" target="_blank">http://dx.doi.org/10.1007/s10854-020-03209-w</a></p>2020-03-18T21:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1007/s10854-020-03209-whttps://figshare.com/articles/journal_contribution/Electrooxidation_behavior_of_ethanol_toward_carbon_microbead-encapsulated_ZnO_particles_derived_from_coffee_waste/21597321CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/215973212020-03-18T21:00:00Z |
| spellingShingle | Electrooxidation behavior of ethanol toward carbon microbead-encapsulated ZnO particles derived from coffee waste Zafar Khan Ghouri (1407580) Engineering Electronics, sensors and digital hardware Physical sciences Condensed matter physics Carbon microbeads (CM) Zinc oxide (ZnO) Spent coffee ground (SCG) Chemical activation Electrooxidation Ethanol electrooxidation |
| status_str | publishedVersion |
| title | Electrooxidation behavior of ethanol toward carbon microbead-encapsulated ZnO particles derived from coffee waste |
| title_full | Electrooxidation behavior of ethanol toward carbon microbead-encapsulated ZnO particles derived from coffee waste |
| title_fullStr | Electrooxidation behavior of ethanol toward carbon microbead-encapsulated ZnO particles derived from coffee waste |
| title_full_unstemmed | Electrooxidation behavior of ethanol toward carbon microbead-encapsulated ZnO particles derived from coffee waste |
| title_short | Electrooxidation behavior of ethanol toward carbon microbead-encapsulated ZnO particles derived from coffee waste |
| title_sort | Electrooxidation behavior of ethanol toward carbon microbead-encapsulated ZnO particles derived from coffee waste |
| topic | Engineering Electronics, sensors and digital hardware Physical sciences Condensed matter physics Carbon microbeads (CM) Zinc oxide (ZnO) Spent coffee ground (SCG) Chemical activation Electrooxidation Ethanol electrooxidation |