Síntesis y caracterización de nanopartículas y recubrimientos nanoestructurados con propiedades fotocatalíticas PDF Download
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Languages : es
Pages : 274
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Author:
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ISBN:
Category :
Languages : es
Pages : 274
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Author: Margarita López-Viota Gallardo
Publisher:
ISBN: 9788469159798
Category :
Languages : en
Pages : 296
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Author: María Eulalia Vanegas
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Category :
Languages : es
Pages :
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Se sintetizaron nanopartículas magnéticas del tipo Fe3O4/TiO2 (núcleo/coraza) mediante el método combinado que involucra para la síntesis inicial del Fe3O4 la co-precipitación química y para la formación de la capa de TiO2 la síntesis por la técnica sol-gel. Las nanopartículas magnéticas fueron caracterizadas antes y después del proceso de recubrimiento, mediante rayos-X y microscopía electrónica de barrido con emisión de campo y con microanálisis de rayos-X. El análisis de refinamiento estructural se realizó por el método Rietveld a través del programa FullProf, a partir de la difracción de rayos-X de polvo y confirmó la presencia de Fe3O4 como óxido de hierro y que el recubrimiento está constituido por TiO2 en su fase anastasa. El tamaño del cristal fue calculado mediante la ecuación de Scherrer y corresponde alrededor de 10nm, tanto para el Fe3O4 como para la capa de TiO2. Según los análisis de microscopía electrónica de barrido con emisión de campo, las nanopartículas magnéticas recubiertas tienen forma esférica y se encuentran altamente aglomeradas. Los resultados de microscopía electrónica de barrido con microanálisis de rayos-X confirman únicamente la presencia de tres elementos: Fe, Ti y O. Finalmente, la dispersión de las nanopartículas de Fe3O4/TiO2 en agua fue evaluada a diferentes valores de pH mediante espectroscopía ultravioleta en el rango del ultravioleta y el visible. Los mayores valores de absorbancia se obtuvieron a pH 8 y 4,5; mostrando una buena dispersión. Por otro lado, a pH 6,5 hay tendencia a aglomerarse con posterior precipitación.
Author: Zishan Husain Khan
Publisher: Springer Nature
ISBN: 9811599041
Category : Technology & Engineering
Languages : en
Pages : 382
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This book discusses new trends in nanotechnology. It covers a wide range of topics starting from applications of nanomaterials in perovskite solar cells, pharmacy, and dentistry to self-assembled growth of GaN nanostructures on flexible metal foils by laser molecular beam epitaxy. It also includes other interesting topics such as advancement in carbon nanotubes; processing techniques, purification and industrial applications, metal di-chalcogenides for waste water treatment and recent advancement in nanostructured-based electrochemical genosensors for pathogen detection and many more. The book will be of great interest to researchers, professionals and students working in the areas of nanomaterials and nanotechnology.
Author: Tatsuki Ohji
Publisher: John Wiley & Sons
ISBN: 1119100402
Category : Technology & Engineering
Languages : en
Pages : 538
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In this book project, all the American Ceramic Society's Engineering Ceramics Division Mueller and Bridge Building Award Winners, the ICACC Plenary Speakers and the past Engineering Ceramics Division Chairs have been invited to write book chapters on a topic that is compatible with their technical interests and consistent with the scope of the book, which is to focus on the current status and future prospects of various technical topics related to engineering ceramics, advanced ceramics and composite materials. Topics include: Mechanical Behavior and Performance of Ceramics & Composites Non-Destructive Evaluation and Mechanical Testing of Engineering Ceramics Brittle and Composite Material Design Modern Fracture Mechanics of Ceramics Thermal/Environmental Barrier Coatings Advanced Ceramic Coatings for Functional Applications Advanced Ceramic Joining Technologies Ceramics for Machining, Friction, Wear, and Other Tribological Applications Ceramic Composites for High-Temperature Aerospace Structures and Propulsion Systems Thermal Protection Materials: From Retrospect to Foresight Carbon/Carbon Composites Ceramic-Matrix Composites for Lightweight Construction Ultra High-Temperature Ceramics (UHTC) Nanolaminated Ternary Carbides and Nitrides (MAX Phases) Ceramics for Heat Engine and Other Energy Related Applications Solid Oxide Fuel Cells (SOFC) Armor Ceramics Next Generation Bioceramics Ceramics for Innovative Energy and Storage Systems Designing Ceramics for Electrochemical Energy Storage Devices Nanostructured Materials and Nanotechnology Advanced Ceramic Processing and Manufacturing Technologies Engineering Porous Ceramics Thermal Management Materials and Technologies Geopolymers Advanced Ceramic Sensor Technology Advanced Ceramics and Composites for Nuclear and Fusion Applications Advanced Ceramic Technologies for Rechargeable Batteries
Author: Dolores Eliche Quesada
Publisher: BoD – Books on Demand
ISBN: 1789857732
Category : Technology & Engineering
Languages : en
Pages : 108
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Book Description
Scientific and technological development has led to the formulation of tailor-made materials, which have given rise to materials with new structural and industrial applications. This book aims to analyze the synthesis, characterization, and applications of ceramic materials. This includes an introduction to traditional and advanced ceramics, the use of traditional ceramic materials as ideal candidates for absorbing wastes, and the synthesis and characterization of advanced ceramics as nanoceramics, ytria ceramics, and electronic ceramics.
Author: S. Norris
Publisher: Geological Society of London
ISBN: 186239654X
Category : Science
Languages : en
Pages : 618
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Book Description
This Special Publication contains 43 scientific studies presented at the 5th conference on ‘Clays in natural and engineered barriers for radioactive waste confinement’ held in Montpellier, France in 2012. The conference and this resulting volume cover all the aspects of clay characterization and behaviour considered at various temporal and spatial scales relevant to the confinement of radionuclides in clay, from basic phenomenological process descriptions to the global understanding of performance and safety at repository and geological scales. Special emphasis has been given to the modelling of processes occurring at the mineralogical level within the clay barriers. The papers in this Special Publication consider research into argillaceous media under the following topic areas: large-scale geological characterization; clay-based concept/large-scale experiments; hydrodynamical modelling; geochemistry; geomechanics; mass transfer/gas transfer; mass transfer mechanisms. The collection of different topics presented in this Special Publication demonstrates the diversity of geological repository research.
Author: Dionysios D Dionysiou
Publisher: Royal Society of Chemistry
ISBN: 1782627103
Category : Science
Languages : en
Pages : 395
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Book Description
From environmental remediation to alternative fuels, this book explores the numerous important applications of photocatalysis. The book covers topics such as the photocatalytic processes in the treatment of water and air; the fundamentals of solar photocatalysis; the challenges involved in developing self-cleaning photocatalytic materials; photocatalytic hydrogen generation; photocatalysts in the synthesis of chemicals; and photocatalysis in food packaging and biomedical and medical applications. The book also critically discusses concepts for the future of photocatalysis, providing a fascinating insight for researchers. Together with Photocatalysis: Fundamentals and Perspectives, these volumes provide a complete overview to photocatalysis.
Author:
Publisher:
ISBN: 9781510874671
Category :
Languages : en
Pages : 217
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Author: Yury E. Khudyakov
Publisher: CRC Press
ISBN: 1420007300
Category : Medical
Languages : en
Pages : 588
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Book Description
An All-Inclusive Review of the Achievements and Trends in the Fast-Growing Protein Engineering Field From humble beginnings like making fire for mere survival, engineering now steadfastly penetrates all aspects of our lives and even life itself at the molecular level. Protein engineering is a molecular biological discipline focused on designing and
