Voltammetry at boron-doped diamond electrodes in liquid ammonia: solvent window effects and diamond surface modification

F. Javier Del Campo; Christiaan H. Goeting; Duncan Morris; John S. Foord; Andreas Neudeck; Richard G. Compton; Frank Marken

doi:10.1149/1.1391008

Voltammetry at boron-doped diamond electrodes in liquid ammonia: solvent window effects and diamond surface modification

F. Javier Del Campo, Christiaan H. Goeting, Duncan Morris, John S. Foord, Andreas Neudeck, Richard G. Compton, Frank Marken

University of Oxford

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

18 Citations (SciVal)

Abstract

Vacuum-annealed highly boron-doped diamond (BDD) thin-film electrodes are shown to allow reversible voltammetric responses for the reduction of nitrobenzene, 3,5-difluoronitrobenzene, and for the generation of solvated electrons in liquid ammonia at -60°C. In liquid ammonia (0.1 M KI) a considerably extended positive potential window at BDD electrodes compared to platinum is observed. At the negative end of the potential scale facile generation of solvated electrons occurs at both platinum and BDD electrodes. After exposure to solvated electrons in liquid ammonia, the surface of the diamond becomes hydrophilic and nitrogen functionalities were detected by X-ray photoelectron spectroscopy.

Original language	English
Pages (from-to)	224-227
Number of pages	4
Journal	Electrochemical and Solid-State Letters
Volume	3
Issue number	5
DOIs	https://doi.org/10.1149/1.1391008
Publication status	Published - 1 May 2000

ASJC Scopus subject areas

General Chemical Engineering
General Materials Science
Physical and Theoretical Chemistry
Electrochemistry
Electrical and Electronic Engineering

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title = "Voltammetry at boron-doped diamond electrodes in liquid ammonia: solvent window effects and diamond surface modification",

abstract = "Vacuum-annealed highly boron-doped diamond (BDD) thin-film electrodes are shown to allow reversible voltammetric responses for the reduction of nitrobenzene, 3,5-difluoronitrobenzene, and for the generation of solvated electrons in liquid ammonia at -60°C. In liquid ammonia (0.1 M KI) a considerably extended positive potential window at BDD electrodes compared to platinum is observed. At the negative end of the potential scale facile generation of solvated electrons occurs at both platinum and BDD electrodes. After exposure to solvated electrons in liquid ammonia, the surface of the diamond becomes hydrophilic and nitrogen functionalities were detected by X-ray photoelectron spectroscopy.",

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T1 - Voltammetry at boron-doped diamond electrodes in liquid ammonia

T2 - solvent window effects and diamond surface modification

AU - Del Campo, F. Javier

AU - Goeting, Christiaan H.

AU - Morris, Duncan

AU - Foord, John S.

AU - Neudeck, Andreas

AU - Compton, Richard G.

AU - Marken, Frank

PY - 2000/5/1

Y1 - 2000/5/1

N2 - Vacuum-annealed highly boron-doped diamond (BDD) thin-film electrodes are shown to allow reversible voltammetric responses for the reduction of nitrobenzene, 3,5-difluoronitrobenzene, and for the generation of solvated electrons in liquid ammonia at -60°C. In liquid ammonia (0.1 M KI) a considerably extended positive potential window at BDD electrodes compared to platinum is observed. At the negative end of the potential scale facile generation of solvated electrons occurs at both platinum and BDD electrodes. After exposure to solvated electrons in liquid ammonia, the surface of the diamond becomes hydrophilic and nitrogen functionalities were detected by X-ray photoelectron spectroscopy.

AB - Vacuum-annealed highly boron-doped diamond (BDD) thin-film electrodes are shown to allow reversible voltammetric responses for the reduction of nitrobenzene, 3,5-difluoronitrobenzene, and for the generation of solvated electrons in liquid ammonia at -60°C. In liquid ammonia (0.1 M KI) a considerably extended positive potential window at BDD electrodes compared to platinum is observed. At the negative end of the potential scale facile generation of solvated electrons occurs at both platinum and BDD electrodes. After exposure to solvated electrons in liquid ammonia, the surface of the diamond becomes hydrophilic and nitrogen functionalities were detected by X-ray photoelectron spectroscopy.

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DO - 10.1149/1.1391008

M3 - Article

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JO - Electrochemical and Solid-State Letters

JF - Electrochemical and Solid-State Letters

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ER -

Voltammetry at boron-doped diamond electrodes in liquid ammonia: solvent window effects and diamond surface modification

Abstract

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