John Edward Graves

John Edward Graves
Coventry University | CU · Research Centre for Clean Growth and Future Mobility

BSc(Hons), PhD in Electrochemistry
Low cost electrochemical generation of hydrogen

About

27
Publications
13,109
Reads
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837
Citations
Introduction
John works in the Institute for Clean Growth and Future Mobility at Coventry University. John's research interests include electrochemical synthesis, functional materials and electrodeposition. He is currently PI for Coventry University on the EU REWAISE project which is working towards a smart water ecosystem. He is also an Investigator on an industry-sponsored project evaluating anion exchange MEAs for water electrolysis and a KTP lead academic.
Additional affiliations
February 1992 - June 2002
Rohm and Haas Electronic Materials Division
Position
  • European Research Manager for Metallisation
September 1988 - November 1991
University of Southampton
Position
  • PhD Student

Publications

Publications (27)
Presentation
Full-text available
Nitrided steel is being used to increase the lifetime and wettability of selective soldering nozzles. In this environment, the liquid solder wets to the surface of the nozzle to enable control of the solder flow during the soldering process. Pre-treatment is a key step in the processing of parts for electroplating. Pre-treatment usually involves de...
Article
This paper describes a two-step method to prepare novel copper-methanol nanofluids capped with a short chain molecule, (3-Aminopropyl)trimethoxysilane (APTMS). Two commercial nanopowders were dispersed at various powers using a 20 kHz ultrasonic probe into solutions of methanol and the capping agent. Ultrasonic energy input was measured by calorim...
Article
Full-text available
Pulsed current (PC) electrodeposition has become an essential tool for producing coatings in a wide range of industries. The pulsed current can have a significant influence on the composition, morphology and properties of electrodeposited coatings and this is particularly true when plating an alloy. In this study, the mechanism for the development...
Article
The formation of printed circuit patterns on non-conductive substrates has many applications in high value sectors such as electronics manufacturing. Current semi-additive and subtractive circuit manufacturing processes use photolithography to pattern substrates coated with a thin or relatively thick metal film. This process is often wasteful and e...
Article
Full-text available
A new procedure for the fabrication of metal nanowires by template-assisted electrodeposition using porous polycarbonate templates is described. A thin sputtered film of silver (≤ 15 nm) was deposited onto one side of the template. The silver seed layer was used to catalyse electroless copper deposition and a copper layer was grown on top (300–500...
Article
Full-text available
The selective patterning of silver nanoparticles by a patent pending process to act as a catalyst for metallization with electroless copper was explored on cotton, with a view towards application in the wearable technology sector. Whole area coverage or tracks serving as point-to-point connections were achieved by depositing the catalyst via sprayi...
Article
Full-text available
Among existing water treatment methods for organic-containing wastewaters, advanced oxidation process, particularly electrocatalytic oxidation, is a technique allowing to reach high degradation and mineralization efficiencies. Electrodes tested for use in electrocatalytic oxidation processes contain either expensive or platinum/group metals such as...
Conference Paper
Full-text available
Electroless copper plating of insulating substrates, such as printed circuit boards, typically requires the pre-deposition of a catalyst layer onto the surface to initiate the chemical reactions. Pd/Sn based catalysts are widely used, but carry a high cost and in many cases require specialist pre-treatment of the substrate to achieve good adhesion....
Conference Paper
Electroless plating is an important process for the metallization of non-conductive substrates and is therefore widely utilized throughout the electronics and packaging industry. Electronic manufacture now requires processes and materials that can meet the demands for miniaturization and reliability since holes and via diameters in both printed cir...
Conference Paper
Electroless copper plating is an important process for the metallization of non-conductive substrates and is therefore widely utilized throughout the electronics industry. Electroless processes are characterised by high temperature operation and although the effect of ultrasound on electroless plating has been studied for many years, its use as an...
Article
Full-text available
The development of new electrocatalysts with the aim of enhancing the rate of electrochemical reactions has been a long-term goal of electrochemists. In part, this is due to the great importance of electrocatalysts in energy generation and environmental concerns. In this review, various methods of the preparation of nanostructured electrocatalysts...
Article
The possibility of protein release from polymeric microcapsules by means of low-power (up to a maximum of 3.2 W) high-frequency (850 kHz) ultrasound was studied. The release efficiency using these ultrasonic parameters that are close to those currently used in medical diagnostic and ultrasound treatment was compared to that achieved with a conventi...
Article
Acoustic cavitation has been the subject of research and discussion for many years and it is the underlying driving force for sonochemistry. The collapse of acoustic cavitation bubbles in water near to a surface can bring about significant surface modification in terms of the mechanical damage caused by the asymmetric collapse of the bubbles which...
Article
Full-text available
Copper nanoparticles were synthesized using a pulsed sonoelectrochemical (20 kHz, 78 Wcm−2) method. Two electrolytes used were a copper salt dissolved in Na2SO4 (pH=3.80) or H2SO4 (pH=0.6). For both electrolytes and in the absence of any surfactant, monodispersed spherical copper nanoparticles were strongly aggregated in three-dimensional clusters...
Conference Paper
The aim of this work is to obtained copper nanoparticles with a narrow particle size distribution by pulsed sonoelectrochemistry. The sonolectrochemical production of nanoparticules were carried out using a potential step technique. Under potentiostatic conditions the aim is to control and decrease the nanoparticle size and reduce production costs...
Article
The demand for higher operating speeds and increasing densification in electronic packages is driving designers to reduce feature sizes in order to accommodate increases in I/O counts. Consequently, printed circuit board manufacturers are turning to new manufacturing techniques and new materials in order to meet these demands from their customers....
Article
The use of insoluble anodes in horizontal acid copper electroplating machines is becoming the industry standard. Despite this fact there appears to be little published work on the optimisation of the anode material for this application. Although titanium coated with iridium dioxide is widely used for its long lifetime under oxygen evolution conditi...
Article
Full-text available
The formation of silver(II) ions in nitric acid was studied using a rotating disc electrode at temperatures of 25°C and a preparative H-type divided cell was used to generate dark brown silver(II) solutions at 50 mA cm-2, 50°C. When acrylonitrile-butadiene-styrene (ABS) samples were etched in this highly oxidising medium, residual silver(I) species...
Article
In September 1998 six European companies involved in PCB manufacturing and electronic packaging started collaborating in a development project known as "PRIME". The "Program for Re-engineering and Innovating (PCB) Manufacturing and Equipment" project lost one of its original members in late 1999, and Coates Circuit Products joined as the dielectric...
Article
The increase in microvia production and sequential build-up boards is obvious to all. The demand that users and manufacturers of electronic equipment place on the industry is driving this change. The need for faster, lighter, cheaper, and smaller electronics is relentless, and these demands can only be met through increasing the circuit density of...
Article
The cathodic reduction of oxygen in 1 mol dm−3 sodium hydroxide solutions has been investigated at several types of titanium oxide cathodes. Layers of TiO2 were prepared on titanium by spraying and thermal decomposition of solutions of titanium n-butoxide in 2-propanol and titanium tetrachloride in methanol+water and also by anodization; the reduct...
Article
Full-text available
Uncoated Ebonex is not a suitable anode material for the generation of ozone. By contrast, Ebonex electroplated with PbO2 can be highly stable in the forcing conditions essential to the formation of ozone and gives current yields comparable to lead dioxide on other substrates in both acid and neutral electrolytes.
Article
Full-text available
The electrodeposition of copper, gold, nickel, palladium and platinum onto Ebonex® ceramic cathodes has been studied. It is demonstrated that good quality deposits may be obtained and that the kinetics of the deposition and dissolution of metals are similar at Ebonex® to other common substrates (for example, Pt, C). In addition, the kinetics of som...

Questions

Questions (5)
Question
Thinking of buying the electrolyser below for a research project on water splitting. Has anyone used it for their research work? How easy is it to prepare your own anodes and replace them with the Dioxide product?
Question
I need it for spraying a solution of dihydrogen hexachloroiridate(IV) in alcohol. We've been using an air brush that has a brass nozzle but we found this is being attacked by the iridium salt and contaminating our coating with copper and zinc.
Question
The Malvern sample dispersion and refractive index guide states that the RI of copper is 0.25. Is this the correct value to use if I want to model copper nanopowder dispersions in methanol? I'm using a NanoS to analyse the samples.
Question
Is there any reason why I can't purchase a thin sheet of silver, cut out a disc and use this as a target for my mini sputter coater? Seems far cheaper than purchasing a target from an equipment supplier.

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