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- Volume 66, Issue 1, 2022
Johnson Matthey Technology Review - Volume 66, Issue 1, 2022
Volume 66, Issue 1, 2022
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oa Guest Editorial: Johnson Matthey and Diversity
Authors: SIMONE COULTRESS and SARA COLES
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oa Adsorption of Transition Metal Catalysts on Carbon Supports: A Theoretical Perspective
By Arunabhiram ChutiaAdsorption is a fundamental process which takes place on a catalyst surface before it dissociates, diffuses over the surface and recombines with other adsorbed species to form the final product. Therefore, in theoretical chemistry understanding of the local geometrical and electronic properties of the adsorbed species on the catalyst surface has been a topic of core focus. In this short review we briefly summarise som Read More
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oa Photoelectrochemical Hydrogen Evolution Using Dye-Sensitised Nickel Oxide
Authors: Abigail A. Seddon, Joshua K. G. Karlsson, Elizabeth A. Gibson, Laura O’Reilly, Martin Kaufmann, Johannes G. Vos and Mary T. PrycePhotoelectrocatalysis offers a way to generate hydrogen and oxygen from water under ambient light. Here, a series of hydrogen evolving photocatalysts based on a ruthenium(II) bipyridyl sensitiser covalently linked to platinum or palladium catalytic centres were adsorbed onto mesoporous nickel oxide and tested for hydrogen evolution in a photoelectrochemical half-cell. The electrolyte buffer was varied and ce Read More
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oa Comparative Study of Radiative Heating Techniques for Fast Processing of Functional Coatings for Sustainable Energy Applications
Authors: Rebecca Griffin, Katherine Hooper, Cecile Charbonneau and Jenny BakerThis study assesses the use of short wavelength radiative heating techniques such as near infrared (NIR), intense pulsed light (IPL) and ultraviolet (UV) heating for processing coatings in energy applications. It concentrates on the importance of investigating different radiative wavelengths to advance these technologies as scalable processes via reduced heating times. It illustrates the mechanisms by which these techniques c Read More
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oa Sodium-Ion Batteries: Current Understanding of the Sodium Storage Mechanism in Hard Carbons
Authors: Jack R. Fitzpatrick, Sara I. R. Costa and Nuria Tapia-RuizIn recent years, sodium-ion batteries (NIBs) have been explored as an alternative technology to lithium-ion batteries (LIBs) due to their cost-effectiveness and promise in mitigating the energy crisis we currently face. Similarities between both battery systems have enabled fast development of NIBs, however, their full commercialisation has been delayed due to the lack of an appropriate anode material. Hard ca Read More
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oa Using Ultrasound to Effectively Homogenise Catalyst Inks: Is this Approach Still Acceptable?
Authors: Bruno G. Pollet and Shyam S. KochaSince the early 2010s, less than a handful of studies have been communicated to the hydrogen and fuel cell communities that special care should be adopted, and a systematic approach should be applied, when homogenising catalyst ink slurries using ultrasound in the form of either a laboratory-grade ultrasonic cleaning bath, or an ultrasonic probe (sonifier). In these studies, it was demonstrated that the use of power Read More
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oa Screening for Bioactive Compound Rich Pomegranate Peel Extracts and Their Antimicrobial Activities
Authors: Merve Balaban, Cansel Koç, Taner Sar and Meltem Yesilcimen AkbasIn this work, seven different extracts from pomegranate (Punica granatum L., cv. Hicaz nar) peel were prepared by using different solvents (ethanol, methanol, either alone or in combination with acid, acetone and water). The phenolics (punicalagins and ellagic acid), organic acids (citric acid and malic acid) and sugars of pomegranate peel extracts (PPEs) were determined. The highest amounts of punicalagins and ellagic Read More
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oa Using Spraying as an Alternative Method for Transferring Capsules Containing Shea Butter to Denim and Non-Denim Fabrics
Authors: İsmail İvedi, Bahadır Güneşoğlu, Sinem Yaprak Karavana, Gülşah Ekin Kartal, Gökhan Erkan and Ayşe Merih SarıışıkThe aim of this study was to prepare microcapsules and transfer them to denim and non-denim trousers using different application methods. For this purpose, shea butter as active agent was encapsulated in an ethyl cellulose shell using the spray dryer method, and capsule optimisation was studied. A morphological assessment showed that the capsules had a smooth surface and were spherical in shape. The homogenous siz Read More
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oa Challenges of Coating Textiles with Graphene
Authors: Ana I. S. Neves and Zakaria SaadiElectronic textiles (e-textiles) hold the key for seamless integration of electronic devices for wearable applications. Compared to other flexible substrates, such as plastic films, textiles are, however, challenging substrates to work with due to their surface roughness. Researchers at the University of Exeter, UK, demonstrated that using different coating techniques as well as different types of graphene coatings is the key Read More
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oa Introduction to the Additive Manufacturing Powder Metallurgy Supply Chain
Authors: By Jason Dawes, Robert Bowerman and Ross Trepleton
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oa Methanol Production – A Technical History
By By Daniel Sheldon
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oa Lithium Recovery from Aqueous Resources and Batteries: A Brief Review
Authors: Ling Li, Vishwanath G. Deshmane, M. Parans Paranthaman, Ramesh Bhave, Bruce A. Moyer and Stephen Harrison
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oa Toward Platinum Group Metal-Free Catalysts for Hydrogen/Air Proton-Exchange Membrane Fuel Cells
Authors: Frédéric Jaouen, Deborah Jones, Nathan Coutard, Vincent Artero, Peter Strasser and Anthony Kucernak
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oa Methane Emission Control
By By Agnes Raj
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oa Secondary Lithium-Ion Battery Anodes: From First Commercial Batteries to Recent Research Activities
Authors: By Nicholas Loeffler, Dominic Bresser, Stefano Passerini and Mark Copley
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oa Challenges and Opportunities in Fast Pyrolysis of Biomass: Part I
By By Tony Bridgwater
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oa Ammonia and the Fertiliser Industry: The Development of Ammonia at Billingham
By By John Brightling
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