Inhibition of Cu Underpotential Deposition on Au Nanoparticles: The Role of the Citrate Capping Agent and Nanoparticle Size
Cu underpotential deposition (UPD) is compared between a Au macroelectrode and Au nanoparticles ranging between 1.8 nm and 123 nm in size in order to identify whether the capping agent or nanoparticle size affects this reaction. It was found that the surface coverage of Cu was markedly decreased in...
| Main Authors: | , |
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| Format: | Journal article |
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2014
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| _version_ | 1826268681313714176 |
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| author | Plowman, B Compton, R |
| author_facet | Plowman, B Compton, R |
| author_sort | Plowman, B |
| collection | OXFORD |
| description | Cu underpotential deposition (UPD) is compared between a Au macroelectrode and Au nanoparticles ranging between 1.8 nm and 123 nm in size in order to identify whether the capping agent or nanoparticle size affects this reaction. It was found that the surface coverage of Cu was markedly decreased in the presence of the citrate capping agent, while a strong size dependence was also observed, with nanoparticles smaller than 60 nm displaying significantly less defined Cu UPD responses. These results highlight the influence of both the capping agent and nanoparticle size for UPD applications, such as the electrochemical determination of surface areas and the formation of bimetallic surfaces. |
| first_indexed | 2024-03-06T21:13:25Z |
| format | Journal article |
| id | oxford-uuid:3ef28332-8069-4905-8d3e-cc7cf19bd3da |
| institution | University of Oxford |
| last_indexed | 2024-03-06T21:13:25Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | oxford-uuid:3ef28332-8069-4905-8d3e-cc7cf19bd3da2022-03-26T14:28:54ZInhibition of Cu Underpotential Deposition on Au Nanoparticles: The Role of the Citrate Capping Agent and Nanoparticle SizeJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:3ef28332-8069-4905-8d3e-cc7cf19bd3daSymplectic Elements at Oxford2014Plowman, BCompton, RCu underpotential deposition (UPD) is compared between a Au macroelectrode and Au nanoparticles ranging between 1.8 nm and 123 nm in size in order to identify whether the capping agent or nanoparticle size affects this reaction. It was found that the surface coverage of Cu was markedly decreased in the presence of the citrate capping agent, while a strong size dependence was also observed, with nanoparticles smaller than 60 nm displaying significantly less defined Cu UPD responses. These results highlight the influence of both the capping agent and nanoparticle size for UPD applications, such as the electrochemical determination of surface areas and the formation of bimetallic surfaces. |
| spellingShingle | Plowman, B Compton, R Inhibition of Cu Underpotential Deposition on Au Nanoparticles: The Role of the Citrate Capping Agent and Nanoparticle Size |
| title | Inhibition of Cu Underpotential Deposition on Au Nanoparticles: The Role of the Citrate Capping Agent and Nanoparticle Size |
| title_full | Inhibition of Cu Underpotential Deposition on Au Nanoparticles: The Role of the Citrate Capping Agent and Nanoparticle Size |
| title_fullStr | Inhibition of Cu Underpotential Deposition on Au Nanoparticles: The Role of the Citrate Capping Agent and Nanoparticle Size |
| title_full_unstemmed | Inhibition of Cu Underpotential Deposition on Au Nanoparticles: The Role of the Citrate Capping Agent and Nanoparticle Size |
| title_short | Inhibition of Cu Underpotential Deposition on Au Nanoparticles: The Role of the Citrate Capping Agent and Nanoparticle Size |
| title_sort | inhibition of cu underpotential deposition on au nanoparticles the role of the citrate capping agent and nanoparticle size |
| work_keys_str_mv | AT plowmanb inhibitionofcuunderpotentialdepositiononaunanoparticlestheroleofthecitratecappingagentandnanoparticlesize AT comptonr inhibitionofcuunderpotentialdepositiononaunanoparticlestheroleofthecitratecappingagentandnanoparticlesize |