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Exploiting the extreme properties of boron doped diamond in electroanalysis
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Iacobini, James G. (2013) Exploiting the extreme properties of boron doped diamond in electroanalysis. PhD thesis, University of Warwick.
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Official URL: http://webcat.warwick.ac.uk/record=b2722564~S1
Abstract
The advantages of polycrystalline boron doped diamond (pBDD) are many when
compared to other electrode materials in the field of electrochemistry. The superior
properties of pBDD has generated substantial interest over the last 10 years,
accelerating diamond to the cutting edge of electroanalytical studies, which benefit
from lower levels of detection when utilising pBDD. The impressive chemical
properties of pBDD allow it to be used in hostile environments where extreme
temperature, pressure and pH may exist, affording researchers a means to create
devices and sensors that could not be made with other materials. In addition pBDD
also possesses extreme physical properties, notably its exceptionally high thermal
conductivity which allows rapid transfer of heat energy. Currently, pBDD is widely
used as an electrode material by many institutions, the production and employment of
this material varies considerably. It is therefore of great importance to understand this
material on a fundamental level, utilising experimental procedures that yield
reproducible results.
The aims of this thesis are as follows: to suitably characterise a series of pBDD
electrodes and elucidate which attributes afford the best performance, to enhance the
electrochemical response of pBDD with temperature effects by exploiting its high
thermal conductivity. A series of electrochemical, spectroscopic and electrical
experiments are performed to assess different pBDD samples, which contain varying
amounts of boron and non-diamond carbon impurities. The effect of electrode heating
is explored. This is performed with a laser light source that allows rapid heating and
cooling of the pBDD electrode, leaving the bulk solution temperature relatively
unchanged. Enhancements are seen at elevated temperatures for several redox couples, showing the feasibility of using laser electrode heating with pBDD. In the final
chapter, elevated temperatures through electrode heating of an all diamond structure
are used to enhance the deposition and subsequent stripping of lead in solution
Item Type: | Thesis (PhD) | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Library of Congress Subject Headings (LCSH): | Electrochemical analysis, Electrochemistry, Electrodes, Boron -- Electric properties, Diamonds -- Thermal conductivity | ||||
Official Date: | September 2013 | ||||
Dates: |
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Institution: | University of Warwick | ||||
Theses Department: | Department of Chemistry | ||||
Thesis Type: | PhD | ||||
Publication Status: | Unpublished | ||||
Supervisor(s)/Advisor: | Macpherson, Julie V.; Newton, Mark | ||||
Extent: | xxvi, 201 leaves : illustrations, charts. | ||||
Language: | eng |
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