The Synthesis of Palladium-platinum Core-shell Nanoparticles with High Catalytic Peroxidase Activities for Biosensing Applications PDF Download
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Author: Edwin Davidson Barahona
Publisher:
ISBN:
Category :
Languages : en
Pages : 56
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Book Description
Keywords: Pd-Pt nanocube, peroxidase mimic, colorimetric biosensing, ascorbic acid, catalytic activity
Author: Edwin Davidson Barahona
Publisher:
ISBN:
Category :
Languages : en
Pages : 56
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Book Description
Keywords: Pd-Pt nanocube, peroxidase mimic, colorimetric biosensing, ascorbic acid, catalytic activity
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Conformal deposition of platinum as ultrathin shells on facet-controlled palladium nanocrystals offers a great opportunity to enhance the catalytic performance while reducing its loading. Here we report such a system based on palladium icosahedra. Owing to lateral confinement imposed by twin boundaries and thus vertical relaxation only, the platinum overlayers evolve into a corrugated structure under compressive strain. For the core-shell nanocrystals with an average of 2.7 platinum overlayers, their specific and platinum mass activities towards oxygen reduction are enhanced by eight- and sevenfold, respectively, relative to a commercial catalyst. Density functional theory calculations indicate that the enhancement can be attributed to the weakened binding of hydroxyl to the compressed platinum surface supported on palladium. After 10,000 testing cycles, the mass activity of the core-shell nanocrystals is still four times higher than the commercial catalyst. These results demonstrate an effective approach to the development of electrocatalysts with greatly enhanced activity and durability.
Author: Paolo Bollella
Publisher: MDPI
ISBN: 3039438875
Category : Science
Languages : en
Pages : 504
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Book Description
The present book is devoted to all aspects of biosensing in a very broad definition, including, but not limited to, biomolecular composition used in biosensors (e.g., biocatalytic enzymes, DNAzymes, abiotic nanospecies with biocatalytic features, bioreceptors, DNA/RNA, aptasensors, etc.), physical signal transduction mechanisms (e.g., electrochemical, optical, magnetic, etc.), engineering of different biosensing platforms, operation of biosensors in vitro and in vivo (implantable or wearable devices), self-powered biosensors, etc. The biosensors can be represented with analogue devices measuring concentrations of analytes and binary devices operating in the YES/NO format, possibly with logical processing of input signals. Furthermore, the book is aimed at attracting young scientists and introducing them to the field, while providing newcomers with an enormous collection of literature references.
Author: Simon Tymen
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
The high price of platinum currently employed as catalyst for the oxygen reduction reaction in fuel cells represents an obstacle for a widespread usage of these cells. The development of bimetallic particles, reducing the quantity of platinum is a promising solution to increase the viability of the cells and to reduce their price. In this doctoral thesis, palladium was used as a second metal to synthesize bimetallic particles with easy methods. The role of bromide on the properties and performances of the palladium-platinum clusters with a nanoflowers structure was investigated (Chapter 2) and the effect of the time of synthesis on particles prepared by galvanic replacement was analyzed (Chapters 3 and 4). In the end, the formation/dissolution of oxide at the surface of core-shell palladium-platinum nanoparticles was examined (Chapter 4). ...
Author: Edith Chow
Publisher: MDPI
ISBN: 3036507086
Category : Science
Languages : en
Pages : 144
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Book Description
Recent developments in novel materials, sensing principles and signal processing are paving the way for new types of analytical sensors, offering improved sensing performance and practicality. Such advancements will provide accurate and real-time analytical information in the environmental, food, and healthcare sectors to better guide decision-making. For sensors to be commercially viable, the miniaturisation and integration of components for rapid, automated, in-field detection and diagnosis need to be considered. This book highlights state-of-the-art sensors technology in Australia through original contributions and reviews.
Author: Xiaoyu Wang
Publisher: Springer
ISBN: 3662530686
Category : Technology & Engineering
Languages : en
Pages : 134
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Book Description
This book describes the fundamental concepts, the latest developments and the outlook of the field of nanozymes (i.e., the catalytic nanomaterials with enzymatic characteristics). As one of today’s most exciting fields, nanozyme research lies at the interface of chemistry, biology, materials science and nanotechnology. Each of the book’s six chapters explores advances in nanozymes. Following an introduction to the rise of nanozymes research in the course of research on natural enzymes and artificial enzymes in Chapter 1, Chapters 2 through 5 discuss different nanomaterials used to mimic various natural enzymes, from carbon-based and metal-based nanomaterials to metal oxide-based nanomaterials and other nanomaterials. In each of these chapters, the nanomaterials’ enzyme mimetic activities, catalytic mechanisms and key applications are covered. In closing, Chapter 6 addresses the current challenges and outlines further directions for nanozymes. Presenting extensive information on nanozymes and supplemented with a wealth of color illustrations and tables, the book offers an ideal guide for readers from disparate areas, including analytical chemistry, materials science, nanoscience and nanotechnology, biomedical and clinical engineering, environmental science and engineering, green chemistry, and novel catalysis.
Author: Berdimurodov Elyor Tukhliyivich
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110799952
Category : Science
Languages : en
Pages : 342
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Book Description
The research on carbon dots is evolving and expanding very rapidly. A high-tech overview for academia and industry is needed to modernize carbon dots in biological applications. This book covers the use of carbon dots in biology, medicine, and pharmacy: synthesis, properties and applications, obstacles in exploiting these materials, and future research prospects. The reader is able to explore the wide scope of carbon dots in the global market.
Author: Suvardhan Kanchi
Publisher: John Wiley & Sons
ISBN: 1119418232
Category : Technology & Engineering
Languages : en
Pages : 716
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Book Description
This groundbreaking book uniquely focuses on the exploration of the green synthesis of metal nanoparticles and their characterization and applications. Metal nanoparticles are the basic elements of nanotechnology as they are the primary source used in the design of nanostructured devices and materials. Nanomaterials can be manufactured either incidentally, with physical or chemical methods, or naturally; and the high demand for them has led to their large-scale production by various toxic solvents or high energy techniques. However, due to the growing awareness of environmental and safety issues, the use of clean, nontoxic and environment-friendly ways to synthesize metal nanoparticles has emerged out of necessity. The use of biological resources, such as microbes, plant parts, vegetable wastes, agricultural wastes, gums, etc., has grown to become an alternative way of synthesizing metal nanoparticles. This biogenic synthesis is green, environmentally friendly, cost-effective, and nontoxic. The current multi-authored book includes recent information and builds a database of bioreducing agents for various metal nanoparticles using different precursor systems. Green Metal Nanoparticles also highlights different simple, cost-effective, environment-friendly and easily scalable strategies, and includes parameters for controlling the size and shape of the materials developed from the various greener methods.
Author: Alexandru Mihai Grumezescu
Publisher: William Andrew
ISBN: 0128166304
Category : Medical
Languages : en
Pages : 530
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Book Description
Biomedical Applications of Nanoparticles describes the most interesting and investigated biomedical applications of nanoparticles, emphasizing their therapeutic impact. Progress made in the therapy of severe diseases, such as cancer and difficult infections is strictly correlated to the scientific progress and technological development in the field of materials science. Nanoparticles have numerous therapeutic applications, starting with the design of new drugs, delivery systems, therapeutic materials, and their contribution to the development of preventive strategies. The book highlights the impact of nanoparticles on the therapy of infections, antimicrobial effect and also anti-cancer strategies. Successful examples are given throughout the book, along with analysis in order to improve future outcomes of novel therapies. Highlights the term nanotherapeutics and presents several classifications of nanotherapeutics from different points-of-view Presents the recent progress related to nanotherapeutics in the oral cavity Provides the recent progress in the field of biomedical nanoparticles
Author: Allan J. Canty
Publisher: Springer
ISBN: 3642174299
Category : Science
Languages : en
Pages : 195
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Book Description
Kyle A. Grice, Margaret L. Scheuermann and Karen I. Goldberg: Five-Coordinate Platinum(IV) Complexes.- Jay A. Labinger and John E. Bercaw: The Role of Higher Oxidation State Species in Platinum-Mediated C-H Bond Activation and Functionalization.- Joy M. Racowski and Melanie S. Sanford: Carbon-Heteroatom Bond-Forming Reductive Elimination from Palladium(IV) Complexes.- Helena C. Malinakova: Palladium(IV) Complexes as Intermediates in Catalytic and Stoichiometric Cascade Sequences Providing Complex Carbocycles and Heterocycles.- Allan J. Canty and Manab Sharma: h1-Alkynyl Chemistry for the Higher Oxidation States of Palladium and Platinum.- David C. Powers and Tobias Ritter: Palladium(III) in Synthesis and Catalysis.- Marc-Etienne Moret: Organometallic Platinum(II) and Palladium(II) Complexes as Donor Ligands for Lewis-Acidic d10 and s2 Centers.
