The adsorption of quinizarin on boron-doped diamond

Ivan B. Dimov; Christopher Batchelor-McAuley; Leigh Aldous; Richard G. Compton

doi:10.1039/c2cp23380k

The adsorption of quinizarin on boron-doped diamond

Ivan B. Dimov, Christopher Batchelor-McAuley, Leigh Aldous, Richard G. Compton

Chemistry

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

The voltammetric response of the quinone species ‘quinizarin’ (QZ) and its electrocatalytic reduction of oxygen are studied at a boron doped diamond electrode (BDD). It is demonstrated that, contrary to the widespread belief that adsorption of organic molecules on BDD is minimal, not only does QZ readily adsorb to the electrodes surface but this adsorption is also influenced at low surface coverages by the pre-exposure of the electrode to organic solvents. Furthermore, the nature of this adsorbed QZ species is investigated and a potential dependent phase transition is observed. This is to the authors knowledge the first system to exhibit a phase transition of an adsorbed species on a boron doped diamond surface. At low scan rates the system is found to oscillate; these oscillations are ascribed to the presence of a ‘negative differential resistance’.

Original language	English
Pages (from-to)	2375-2380
Journal	Physical Chemistry Chemical Physics
Volume	14
Issue number	7
DOIs	https://doi.org/10.1039/c2cp23380k
Publication status	Published - 2012

Access to Document

10.1039/c2cp23380k

Cite this

@article{244d58faeb344080a8dd29bb2af1c256,

title = "The adsorption of quinizarin on boron-doped diamond",

abstract = "The voltammetric response of the quinone species {\textquoteleft}quinizarin{\textquoteright} (QZ) and its electrocatalytic reduction of oxygen are studied at a boron doped diamond electrode (BDD). It is demonstrated that, contrary to the widespread belief that adsorption of organic molecules on BDD is minimal, not only does QZ readily adsorb to the electrodes surface but this adsorption is also influenced at low surface coverages by the pre-exposure of the electrode to organic solvents. Furthermore, the nature of this adsorbed QZ species is investigated and a potential dependent phase transition is observed. This is to the authors knowledge the first system to exhibit a phase transition of an adsorbed species on a boron doped diamond surface. At low scan rates the system is found to oscillate; these oscillations are ascribed to the presence of a {\textquoteleft}negative differential resistance{\textquoteright}.",

author = "Dimov, {Ivan B.} and Christopher Batchelor-McAuley and Leigh Aldous and Compton, {Richard G.}",

year = "2012",

doi = "10.1039/c2cp23380k",

language = "English",

volume = "14",

pages = "2375--2380",

journal = "Physical Chemistry Chemical Physics",

issn = "1463-9076",

publisher = "ROYAL SOC CHEMISTRY",

number = "7",

}

TY - JOUR

T1 - The adsorption of quinizarin on boron-doped diamond

AU - Dimov, Ivan B.

AU - Batchelor-McAuley, Christopher

AU - Aldous, Leigh

AU - Compton, Richard G.

PY - 2012

Y1 - 2012

N2 - The voltammetric response of the quinone species ‘quinizarin’ (QZ) and its electrocatalytic reduction of oxygen are studied at a boron doped diamond electrode (BDD). It is demonstrated that, contrary to the widespread belief that adsorption of organic molecules on BDD is minimal, not only does QZ readily adsorb to the electrodes surface but this adsorption is also influenced at low surface coverages by the pre-exposure of the electrode to organic solvents. Furthermore, the nature of this adsorbed QZ species is investigated and a potential dependent phase transition is observed. This is to the authors knowledge the first system to exhibit a phase transition of an adsorbed species on a boron doped diamond surface. At low scan rates the system is found to oscillate; these oscillations are ascribed to the presence of a ‘negative differential resistance’.

AB - The voltammetric response of the quinone species ‘quinizarin’ (QZ) and its electrocatalytic reduction of oxygen are studied at a boron doped diamond electrode (BDD). It is demonstrated that, contrary to the widespread belief that adsorption of organic molecules on BDD is minimal, not only does QZ readily adsorb to the electrodes surface but this adsorption is also influenced at low surface coverages by the pre-exposure of the electrode to organic solvents. Furthermore, the nature of this adsorbed QZ species is investigated and a potential dependent phase transition is observed. This is to the authors knowledge the first system to exhibit a phase transition of an adsorbed species on a boron doped diamond surface. At low scan rates the system is found to oscillate; these oscillations are ascribed to the presence of a ‘negative differential resistance’.

U2 - 10.1039/c2cp23380k

DO - 10.1039/c2cp23380k

M3 - Article

SN - 1463-9076

VL - 14

SP - 2375

EP - 2380

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 7

ER -

The adsorption of quinizarin on boron-doped diamond

Abstract

Access to Document

Fingerprint

Cite this