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HomeAuthorsJohnston J.H.

Authors: Johnston J.H.

New Generation Nanogold and Nanosilver Polymer Composites and Their Applications

Johnston J.H., Parry M., Victoria University of Wellington, NZ
A new generation of nanogold and nanosilver polymer composites with polyurethane and nylon, and nanofunctionalised polyurethane paints, have been developed. This novel nanoscience provides the opportunity to impart new functionality to these polymer substrates for [...]

Merino Wool Surfaces Made Superhydrophobic

Herzog M.B., Johnston J.H., Victoria University of Wellington, New Zealand, NZ
Natural merino wool fibres have been used to fabricate wash-fast nonwoven textile surfaces with superhydrophobic and oleophobic properties. Wet felted samples were used to study the effect of the fibre diameter and the degree of [...]

Novel Syntheses of Silica-Gold Core-Shell Particles

Cook M.J., Johnston J.H., Victoria University of Wellington, NZ
Methods for the synthesis of silica-gold core-shell particles presented in literature are not considered commercially viable due to various requirements: high reaction temperatures, the use of light-sensitive reagents, the use of ex-situ gold seeding adding [...]

Synthesis and Characterization of Copper (i) Oxide and Zinc Oxide Quantum Dot Materials and the Development of New Fluorescent Fibre Composites

Johnston J.H., Zeller A.J., Victoria University of Wellington, NZ
New fluorescent composites of Cu2O and ZnO quantum dots with wool and paper fibres for potential use in photoluminescent fabrics, packaging and labelling papers, have been developed. The fluorescent colours can be tuned by varying [...]

Recovery of phosphate from surface waters using a calcium silicate composite material for potential application in environmental remediation

Cairns M.J., Krauss C., Johnston J.H., Victoria University of Wellington, NZ
In many locations, contamination of surface waters by phosphate due to agricultural run-off is becoming a major environmental concern. Currently, there are no effective means for its removal, due to the low phosphate concentration (< [...]

Recovery of phosphate from surface waters using a calcium silicate composite material for potential application in environmental remediation

Cairns M.J., Krauss C., Johnston J.H., Victoria University of Wellington, NZ
In many locations, contamination of surface waters by phosphate due to agricultural run-off is becoming a major environmental concern. Currently, there are no effective means for its removal, due to the low phosphate concentration (< [...]

Superhydrophobic and Superhydrophilic Surfaces

Herzog M.B., Johnston J.H., Franzreb M., Victoria University of Wellington, NZ
A new generation of materials possessing a wide range of possible consumer applications such as water harvesting, stain resistant self-cleaning and water-repellent breathable surfaces are being fabricated. Based on nature’s example of the stenocara beetle, [...]

The Synthesis and Characterisation of Photocatalytic Silver/Silver Halide Nanocomposites of Kraft Paper Fibres and Calcium Silicate

Tate E.W., Johnston J.H., Victoria University of Wellington, New Zealand, NZ
Recently it has been shown that hybrid silver/silver halide nanoparticles exhibit interesting photocatalytic properties, and are known plasmonic photocatalysts. Enhanced photostability and photocatalysis are observed in the nanoparticles due to the surface plasmon resonance of [...]

Aulana and NgaPure : Novel Nanogold Coloured and Antimicrobial Nanosilver Woollen Textiles: The Journey of Discovery, the Nanoscience and Pathway to Commercialisation

Johnston J.H., Noble Bond Ltd, NZ
Aulana and NgaPure products innovatively combine the nanoscience of gold and silver with their affinity for sulfur in cystine amino acids of wool fibres in a synergistic way, to nanofunctionalise wool and produce a boutique [...]

Gold Nanorods: A Journey Towards Successful Synthesis

Kolb A.N.D., Johnston J.H., Victoria University of Wellington/MacDiarmid Institute for Advanced Materials and Nanotechnology, NZ
Gold nanorods (AuNRs) are attracting substantial research interest due to their remarkable size- and shape-related optical properties. AuNRs in solution are brightly coloured but not golden whereby the precise colours of AuNRs depend on accurately [...]

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