Adsorption on graphene: flat to edge to end transitions of phenyl hydroquinone
The adsorption of phenyl hydroquinone (PHQ) on graphene surfaces at the liquid–solid interface is investigated revealing a flat orientation and two different vertically adsorbed states of PHQ on graphene nanoplatelets (GNPs), namely edgewise or endwise adsorption. The transition between these states...
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| Format: | Journal article |
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Royal Society of Chemistry
2017
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| _version_ | 1826264114074222592 |
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| author | Chen, L Tanner, E Compton, R |
| author_facet | Chen, L Tanner, E Compton, R |
| author_sort | Chen, L |
| collection | OXFORD |
| description | The adsorption of phenyl hydroquinone (PHQ) on graphene surfaces at the liquid–solid interface is investigated revealing a flat orientation and two different vertically adsorbed states of PHQ on graphene nanoplatelets (GNPs), namely edgewise or endwise adsorption. The transition between these states is driven by increasing concentrations of PHQ in solution leading to increased absolute coverages on the graphene surface. At low adsorbate concentrations (≤21 mM), the adsorption process is also shown to be Langmuirian with an adsorption constant of (9.5 ± 0.2) mM−1. Independent measurements are conducted using a single particle electrochemical technique to confirm the surface coverage of PHQ on GNPs at low concentrations, showing excellent agreement with the UV-Vis studies. |
| first_indexed | 2024-03-06T20:02:34Z |
| format | Journal article |
| id | oxford-uuid:27d10949-704a-478b-972d-dbe7b62e4f15 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T20:02:34Z |
| publishDate | 2017 |
| publisher | Royal Society of Chemistry |
| record_format | dspace |
| spelling | oxford-uuid:27d10949-704a-478b-972d-dbe7b62e4f152022-03-26T12:09:12ZAdsorption on graphene: flat to edge to end transitions of phenyl hydroquinoneJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:27d10949-704a-478b-972d-dbe7b62e4f15Symplectic Elements at OxfordRoyal Society of Chemistry2017Chen, LTanner, ECompton, RThe adsorption of phenyl hydroquinone (PHQ) on graphene surfaces at the liquid–solid interface is investigated revealing a flat orientation and two different vertically adsorbed states of PHQ on graphene nanoplatelets (GNPs), namely edgewise or endwise adsorption. The transition between these states is driven by increasing concentrations of PHQ in solution leading to increased absolute coverages on the graphene surface. At low adsorbate concentrations (≤21 mM), the adsorption process is also shown to be Langmuirian with an adsorption constant of (9.5 ± 0.2) mM−1. Independent measurements are conducted using a single particle electrochemical technique to confirm the surface coverage of PHQ on GNPs at low concentrations, showing excellent agreement with the UV-Vis studies. |
| spellingShingle | Chen, L Tanner, E Compton, R Adsorption on graphene: flat to edge to end transitions of phenyl hydroquinone |
| title | Adsorption on graphene: flat to edge to end transitions of phenyl hydroquinone |
| title_full | Adsorption on graphene: flat to edge to end transitions of phenyl hydroquinone |
| title_fullStr | Adsorption on graphene: flat to edge to end transitions of phenyl hydroquinone |
| title_full_unstemmed | Adsorption on graphene: flat to edge to end transitions of phenyl hydroquinone |
| title_short | Adsorption on graphene: flat to edge to end transitions of phenyl hydroquinone |
| title_sort | adsorption on graphene flat to edge to end transitions of phenyl hydroquinone |
| work_keys_str_mv | AT chenl adsorptionongrapheneflattoedgetoendtransitionsofphenylhydroquinone AT tannere adsorptionongrapheneflattoedgetoendtransitionsofphenylhydroquinone AT comptonr adsorptionongrapheneflattoedgetoendtransitionsofphenylhydroquinone |