Fabrication of Random Assemblies of Metal Nanobands: A General Method

Hyde, Michael E.; Davies, Trevor J.; Compton, Richard G.

doi:10.1002/anie.200502128

Cited by 23 publications

(20 citation statements)

References 20 publications

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“…Of note is the clear selectivity for the graphitic edge plane (rather than basal plane) sites for MoO 2 deposition, which concurs well with previous studies and indicates that 'edge planes sites are the predominant structures contributing to HET' occurring on a graphitic electrode's surface (see later for further investigations). 12,14,31,58 However, note that further increasing the electrodeposition potential and/or time results in a decreased selectively of nucleation. Fig.…”

Section: Resultsmentioning

confidence: 99%

Defining the origins of electron transfer at screen-printed graphene-like and graphite electrodes: MoO₂nanowire fabrication on edge plane sites reveals electrochemical insights

2016

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Molybdenum (di)oxide (MoO2) nanowires are fabricated onto graphene-like and graphite screen-printed electrodes (SPEs) for the first time, revealing crucial insights into the electrochemical properties of carbon/graphitic based materials. Distinctive patterns observed in the electrochemical process of nanowire decoration show that electron transfer occurs predominantly on edge plane sites when utilising SPEs fabricated/comprised of graphitic materials. Nanowire fabrication along the edge plane sites (and on edge plane like-sites/defects) of graphene/graphite is confirmed with Cyclic Voltammetry, Scanning Electron Microscopy (SEM) and Raman Spectroscopy. Comparison of the heterogeneous electron transfer (HET) rate constants (k°) at unmodified and nanowire coated SPEs show a reduction in the electrochemical reactivity of SPEs when the edge plane sites are effectively blocked/coated with MoO2. Throughout the process, the basal plane sites of the graphene/graphite electrodes remain relatively uncovered; except when the available edge plane sites have been utilised, in which case MoO2 deposition grows from the edge sites covering the entire surface of the electrode. This work clearly illustrates the distinct electron transfer properties of edge and basal plane sites on graphitic materials, indicating favourable electrochemical reactivity at the edge planes in contrast to limited reactivity at the basal plane sites. In addition to providing fundamental insights into the electron transfer properties of graphite and graphene-like SPEs, the reported simple, scalable, and cost effective formation of unique and intriguing MoO2 nanowires realised herein is of significant interest for use in both academic and commercial applications.

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Section: Resultsmentioning

confidence: 99%

Defining the origins of electron transfer at screen-printed graphene-like and graphite electrodes: MoO₂nanowire fabrication on edge plane sites reveals electrochemical insights

2016

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“…Nowadays, it continues to be of interest in the developments of new materials capable to change the electrode surface with better analytical properties, including graphene, nanoparticles, and carbon nanotubes [18,[20][21][22]. Among them, nanosized metal particle modified electrodes have emerged as a promising alternative for the electroanalysis of organic and inorganic compounds [23,24].…”

Section: Introductionmentioning

confidence: 99%

Carbon paste electrode modified with cobalt nanoparticles and its application to the electrocatalytic determination of chlorpromazine

Parvin

Golivand

Najafi

et al. 2012

Journal of Electroanalytical Chemistry

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“…Recently, Davies et al devised a simple but effective method to fabricate ensembles of nanoband electrodes on graphite surfaces [39,40].…”

Section: Fabrication Methodsmentioning

confidence: 99%

Electroanalysis Utilizing Amperometric Microdisk Electrode Arrays

et al. 2007

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This article reviews the literature dealing with electroanalytical applications of ultramicroelectrode arrays over the past twenty years. A brief theoretical description of the mass transport mode governing their behavior is given, after which the main fabrication methods are described. The applications described in the later sections of this review range from conventional electroanalysis, namely trace metal stripping methods, using mercury modified arrays to more recent advances in the field of biosensors (enzymatic, immunosensors and nucleic acid based ones).

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Fabrication of Random Assemblies of Metal Nanobands: A General Method

Cited by 23 publications

References 20 publications

Defining the origins of electron transfer at screen-printed graphene-like and graphite electrodes: MoO₂nanowire fabrication on edge plane sites reveals electrochemical insights

Defining the origins of electron transfer at screen-printed graphene-like and graphite electrodes: MoO₂nanowire fabrication on edge plane sites reveals electrochemical insights

Carbon paste electrode modified with cobalt nanoparticles and its application to the electrocatalytic determination of chlorpromazine

Electroanalysis Utilizing Amperometric Microdisk Electrode Arrays

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Fabrication of Random Assemblies of Metal Nanobands: A General Method

Cited by 23 publications

References 20 publications

Defining the origins of electron transfer at screen-printed graphene-like and graphite electrodes: MoO2nanowire fabrication on edge plane sites reveals electrochemical insights

Defining the origins of electron transfer at screen-printed graphene-like and graphite electrodes: MoO2nanowire fabrication on edge plane sites reveals electrochemical insights

Carbon paste electrode modified with cobalt nanoparticles and its application to the electrocatalytic determination of chlorpromazine

Electroanalysis Utilizing Amperometric Microdisk Electrode Arrays

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Product

Resources

About

Defining the origins of electron transfer at screen-printed graphene-like and graphite electrodes: MoO₂nanowire fabrication on edge plane sites reveals electrochemical insights

Defining the origins of electron transfer at screen-printed graphene-like and graphite electrodes: MoO₂nanowire fabrication on edge plane sites reveals electrochemical insights