Hydrothermal Synthesis And Characterization Of Transition Metal Oxides

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Hydrothermal Synthesis and Characterization of Transition Metal Oxides

Author : Aytaç Şahin
Publisher :
ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.:/5 (416 download)

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Book Synopsis Hydrothermal Synthesis and Characterization of Transition Metal Oxides by : Aytaç Şahin

Download or read book Hydrothermal Synthesis and Characterization of Transition Metal Oxides written by Aytaç Şahin and published by . This book was released on 2004 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrothermal method has proven to be an excellent method for the synthesis of novel metal oxides and vanadates. This research pertains to the synthesis of novel lead chlorovanadate compound and of a known alkali metal trivanadate compound, KV3O8 by hydrothermal method This method has been used to synthesize many inorganic oxide compounds Hydrothermal synthesis is the use of aqueous solvents under high temperature and high pressure to dissolve and recrystallize materials. Compounds with interesting structure and physical properties are often obtained from this technique that is known as one of the low-temperature synthesis techniques for solid state compounds. There are many studies that have been done on oxides in the Pb-V-O systems There are also many vanadium oxides containing Pb, V, O elements in Pb-V-O system such as Pb1.32V8.35O16.7, PbV6O11, PbV2O6, Pb2V3O8.5, and .-PbxV2O5 bronzes (x = 0.3). In an attempt to synthesize vanadium oxides at low temperature, we were able to obtain needle shaped yellow crystals of PbVO3Cl. In the nature, there is a kombatite mineral, Pb14(VO4)2O9Cl4, with the same composition of elements. A new lead chlorovanadate, PbVO3Cl, was obtained from the reaction of NaVO3 and PbCl2 in aqueous solution of B(OH)3. The compound was prepared in an autoclave that was filled with aqueous solution of B(OH)3 and heated at 170oC for 3 days. The compound crystallizes in the space group Pnma of the orthorhombic system with formula units in a cell of dimensions a = 10.022(2)

Hydrothermal Synthesis and Characterization of Transition Metal (Mn and V) Oxides Containing Phosphates

Author : Leyla Eral
Publisher :
ISBN 13 :
Total Pages : 190 pages
Book Rating : 4.:/5 (419 download)

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Book Synopsis Hydrothermal Synthesis and Characterization of Transition Metal (Mn and V) Oxides Containing Phosphates by : Leyla Eral

Download or read book Hydrothermal Synthesis and Characterization of Transition Metal (Mn and V) Oxides Containing Phosphates written by Leyla Eral and published by . This book was released on 2006 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: The synthesis of new manganese phosphate compound, Sr2MnP3O11, by hydrothermal reaction of Mn2O3, SrCO3 and H3PO4 in presence of water at 230 for 5 days is reported. The compound crystallizes in the space group P 21/c of the monoclinic system with three formula units in a cell of dimensions a=6.6410(13) b=6.8341(14) c=19.055(14) =99.22(3) V=853.6(3) The structure is composed of MnO6, PO4 and P2O7 groups and Sr cations. It has three dimensional structure including channels n which the Sr cations are placed.The pale pink single crystals of the Hureaulite mineral, Mn5(H2O)4[PO3(OH)]2[PO4]2, were synthesized hydrothermally via the reaction of SrCO3, MnCl2, H3PO4 and H2O at 180C for 3 days. The compound is in the crystal system of monoclinic with unitcell parameters a=17.600(4), b=9.1214(18), c=9.4786(19) and =96.52(3)and in the space group C2/c. The structure possesses a three-dimensional architecture containing channels and is made up of MnO6 and PO4, which are joined with others by sharing corners.All detailed structural information of the synthesized materials was done via commercial software programs SHELX and Crystal Structure.

Design, Synthesis and Characterization of Transition Metal Oxide Nanomaterials as Efficient Sorbents and Emerging Catalysts and Investigation of Carbon Structure-oxidation Activity Correlations

Download Design, Synthesis and Characterization of Transition Metal Oxide Nanomaterials as Efficient Sorbents and Emerging Catalysts and Investigation of Carbon Structure-oxidation Activity Correlations PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.:/5 (946 download)

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Book Synopsis Design, Synthesis and Characterization of Transition Metal Oxide Nanomaterials as Efficient Sorbents and Emerging Catalysts and Investigation of Carbon Structure-oxidation Activity Correlations by :

Download or read book Design, Synthesis and Characterization of Transition Metal Oxide Nanomaterials as Efficient Sorbents and Emerging Catalysts and Investigation of Carbon Structure-oxidation Activity Correlations written by and published by . This book was released on 2015 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Hydrothermal Synthesis of Transition Metal Oxides

Author : L. N. Demyanets
Publisher :
ISBN 13 :
Total Pages : 48 pages
Book Rating : 4.:/5 ( download)

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Book Synopsis Hydrothermal Synthesis of Transition Metal Oxides by : L. N. Demyanets

Download or read book Hydrothermal Synthesis of Transition Metal Oxides written by L. N. Demyanets and published by . This book was released on 1982 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Hydrothermal Synthesis and Characterization of Vanadium and Tungsten Oxide Containing Organic-inoganic Hynrid Material

Author : Banu Önen
Publisher :
ISBN 13 :
Total Pages : 170 pages
Book Rating : 4.:/5 (759 download)

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Book Synopsis Hydrothermal Synthesis and Characterization of Vanadium and Tungsten Oxide Containing Organic-inoganic Hynrid Material by : Banu Önen

Download or read book Hydrothermal Synthesis and Characterization of Vanadium and Tungsten Oxide Containing Organic-inoganic Hynrid Material written by Banu Önen and published by . This book was released on 2011 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrothermal synthesis of transition metal oxide containing organic-inorganic hybrid materials has attracted great attention recently. Two novel organic-inorganic hybrid materials (4,4ʼ-bipy)3[HPW12O39] and [Cu(4,4ʼ-bipy)4][HPW12O40] were hydrothermally synthesized as green and purple crystals respectively, from the reaction of Na6[H2W12O40], CuCl2.2H2O, 4,4ʼ- bipyridine and H3PO4 in a 23 ml autoclave at 170°C for 72 hours. The compound (4,4ʼ-bipy)3[HPW12O39] crystallizes in the space group P21/n of the monoclinic system with four formula units in a cell with dimensions a = 13.503(3) Å, b = 26.726(5) Å, c =15.169(3) Å and V = 5397.3(19) Å3. [Cu(4,4ʼ-bipy)4][HPW12O40] crystallizes in the space group Pbcn of the tetragonal system with eight formula units in a cell of dimensions a = 20.236(4) Å, b = 25.635(5) Å, c = 20.236(4) Å; V = 10497(4) Å3 . Both of the compounds are Keggin polyoxometalate structures. (4,4ʼ-bipy)3[HPW12O39] contains free 4,4ʼ-bipy groups among the clusters while in [Cu(4,4ʼ-bipy)4][HPW12O40] 4,4ʼ-bipy ligands are coordinated to Cu2+ ions. A novel compound (H2NC4H8NH2)[(VO)2(PO4)2] was synthesized hydrothermally from the reaction of NaVO3, V2O5, ethylenediamine and H3PO4 at 170 C for 72 hours. The compound crystallizes in the space group P-1 of the trigonal system with five formula units in a cell of dimensions a= 6.3345(13) Å, b= 6.3353(13) Å, c= 15.940(3) Å, V=639.6(2) Å3. (H2NC4H8NH2)[(VO)2(PO4)2] displays a layered structure with protonated piperazine groups between layers. In addition to the novel compounds, several known compounds were synthesized as well. Blue crystals of (VO)(H2PO4)2 were obtained hydrothermally from the reaction of NaVO3, ethylenediamine and H3PO4 at 170C for 72 hours (C5NH6)4.5(H3O)1.5[P2W18O62] , a known compound also, was synthesized from the reaction of Na2WO4 .2H2O, CuCl2.2H2O, pyridine and H3PO4 at 170C for 72 hours.

Hydrothermal Synthesis and Characterization of Molybdenum-porphyrin Hybrid Materials

Author : Bowen Li
Publisher :
ISBN 13 :
Total Pages : 238 pages
Book Rating : 4.:/5 (19 download)

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Book Synopsis Hydrothermal Synthesis and Characterization of Molybdenum-porphyrin Hybrid Materials by : Bowen Li

Download or read book Hydrothermal Synthesis and Characterization of Molybdenum-porphyrin Hybrid Materials written by Bowen Li and published by . This book was released on 2018 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project aims to fabricate porphyrin-intercalated transition metal oxides layered hybrid materials possessing unique structures and properties. The inorganic-organic hybrid materials are designed to exhibit controllable electronic and magnetic properties. The porphyrin molecules are anticipated to mediate the electronic interactions to promote correlated states between transition metal oxideslayers, because of their high polarizability. With the addition of functional groups at the periphery and coordination of a metal centre in the core, they could serve as both active electronic components and structural pillars covalently bonded to the metal oxides layers. Molybdenum oxides were investigated as inorganic host framework to make the intercalated hybrid materials. The porphyrins used were carboxyphenyl and pyridyl porphyrins (including H2(trans-DPyP), H2(p-TCPP), H2(m-TDCPP) and H2(o-TCPP)). The target of this project was to study the synthesis of porphyrin-metal oxides hybrid layered materials by hydrothermal reactions. Hydrothermal/solvothermal synthesis in Pyrex type borosilicate tubes were used to make hybrid materials. Bulk experiments at different pH and temperature conditions were done. Terephthalic acid and tetra(4-carboxyphenyl)porphyrin were widely used as testing samples to investigate coordination between molybdenum framework and carboxylate groups. However, no porphyrin intercalated layered structure materials were synthesized. Instead, a Keggin based porphyrin hybrid material (MoV(=O)(H2O)p-TCPP)2+{[MoV(=O)(H2O)p-TCPP]2[SiMoVI12O40]}2-was coincidently synthesized from tetra(4-carboxyphenyl)porphyrin and MoO3at pH=3.5, which contained one Keggin polyoxoanion coordinated with two bent MoV(=O)tetra(4-carboxyphenyl)porphyrin and two unlinked MoV(=O)(H2O)tetra(4-carboxyphenyl)porphyrin as counter ion. And, this compound was structurally characterized with single crystal X-ray diffraction. For the rest of porphyrins, there was no material synthesized in single crystal form, so the structure of them could not be confirmed. IR spectroscopy and powder X-ray diffraction were done for these products.

Synthesis and Characterization of Transition Metal Oxides and Dichalcogenides and Their Application in Organic Photovoltaics

Author : Diego Barrera Mendez
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)

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Book Synopsis Synthesis and Characterization of Transition Metal Oxides and Dichalcogenides and Their Application in Organic Photovoltaics by : Diego Barrera Mendez

Download or read book Synthesis and Characterization of Transition Metal Oxides and Dichalcogenides and Their Application in Organic Photovoltaics written by Diego Barrera Mendez and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Low Temperature Synthesis and Characterization of New Vandadium Oxides

Author : Curtis Weeks
Publisher :
ISBN 13 : 9781423565765
Total Pages : 107 pages
Book Rating : 4.5/5 (657 download)

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Book Synopsis Low Temperature Synthesis and Characterization of New Vandadium Oxides by : Curtis Weeks

Download or read book Low Temperature Synthesis and Characterization of New Vandadium Oxides written by Curtis Weeks and published by . This book was released on 1998-02-01 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transition metal oxides are receiving a great deal of attention because the materials produced are showing promise in the fields of catalysis and electrochemistry. These materials are being produced in a variety of ways, but the low temperature hydrothermal method is producing materials with desired structural characteristics. This study discusses efforts in mild reaction conditions of heat temperatures ranging between 160 and 200 deg C. The factors of pH, reaction time, reaction temperature, and the presence of organic templating cations are also studied to see their impact on traditional and microwave reactions. The relatively new field of microwave synthesis has shown that materials which customarily took 2 days of reaction time in the traditional ovens are reproducible in 30-60 minutes via the microwave ovens. The influence of the organic cations in the reaction mediums is the focus of this particular study. The ability to produce layered vanadium oxides in the absence of such templating cations as TMA would make the materials potentially better for electrochemical purposes. This research used a variety of solvents in an attempt to produce interlayer bridging by organic anions. The solvents of ethylene glycol and acetic acid act as those bridges, each with 2 accessible oxygens.

Solvothermal Synthesis and Characterization of Novel Transition Metal Oxides

Author : Marc A. Mamak
Publisher :
ISBN 13 :
Total Pages : 110 pages
Book Rating : 4.:/5 (4 download)

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Book Synopsis Solvothermal Synthesis and Characterization of Novel Transition Metal Oxides by : Marc A. Mamak

Download or read book Solvothermal Synthesis and Characterization of Novel Transition Metal Oxides written by Marc A. Mamak and published by . This book was released on 1998 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Synthesis and Characterization of New Layered Main Group-transition Metal Oxides

Author : Daniel Mark Giaquinta
Publisher :
ISBN 13 :
Total Pages : 386 pages
Book Rating : 4.:/5 (37 download)

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Book Synopsis Synthesis and Characterization of New Layered Main Group-transition Metal Oxides by : Daniel Mark Giaquinta

Download or read book Synthesis and Characterization of New Layered Main Group-transition Metal Oxides written by Daniel Mark Giaquinta and published by . This book was released on 1994 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fabrication and Characterization of Metal Oxide Nanostructures

Author : Dan Li
Publisher : Open Dissertation Press
ISBN 13 : 9781374667495
Total Pages : pages
Book Rating : 4.6/5 (674 download)

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Book Synopsis Fabrication and Characterization of Metal Oxide Nanostructures by : Dan Li

Download or read book Fabrication and Characterization of Metal Oxide Nanostructures written by Dan Li and published by Open Dissertation Press. This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Fabrication and Characterization of Metal Oxide Nanostructures" by Dan, Li, 李丹, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled FABRICATION AND CHARACTERIZATION OF METAL OXIDE NANOSTRUCTURES Submitted by Li Dan for the degree of Doctor of Philosophy at The University of Hong Kong in July 2007 Among various nanostructured materials, metal oxides are very promising for a variety of practical applications. Among different possible synthesis methods for metal oxide nanostructures, hydrothermal synthesis is of great interest because it is safe and environmentally friendly, and is typically performed at temperatures of less than 200 C. In this dissertation, several metal oxide nanostructures, including zinc oxide (ZnO), copper oxide (CuO) and nickel oxide (NiO) nanostructures, were fabricated by hydrothermal synthesis from aqueous solutions of zinc/copper/nickel nitrate hydrate and hexamethylenetetramine. The morphological, structural, optical and electrochemical properties of resultant nanostructures were studied by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffractometry (XRD), energy dispersive X-ray spectroscopy (EDX), photoluminescence (PL), and electron paramagnetic resonance spectroscopy (EPR). The obtained ZnO nanorods are straight and perpendicular to the substrate. The substrate conditions have considerable effects on the size and the orientation of the nanorods. The pH value of solutions also has significant influence on the morphology of resultant ZnO nanostructures. The PL spectra of the ZnO nanorods exhibit one UV peak and one yellow peak ( 578 nm). The ZnO nanorods also show very strong EPR signal at g 1.96. For different synthesis conditions, spherical assemblies of CuO platelets and CuO nanostructured films were obtained respectively. The solution concentration, pH value, synthesis temperature, and presence of seeds significantly affect obtained morphology as well as adhesion to the substrate. For different synthesis conditions, NiO nanowalls and NiO nanostructured films were obtained respectively. The influence of pH value is different on different NiO nanostructures. Finally, transition metal (Mn, Cr, and Co) doped ZnO nanostructures were synthesized by a hydrothermal method from aqueous solutions of zinc nitrate hydrate, TM (TM = Mn, Cr, Co) nitrate hydrate, and hexamethylenetetramine. The addition of TM nitrate hydrate resulted in the change of the shape and preferential orientation of ZnO nanorods. Also, the addition of the dopant affects the optical properties, including the ratio of UV to defect emission and the position of the UV emission peak. DOI: 10.5353/th_b3877735 Subjects: Nanostructures Metallic oxides

Synthesis, Characterization and Properties of Nano-sized Transition Metal Oxides

Author : Ming Yin
Publisher :
ISBN 13 :
Total Pages : 244 pages
Book Rating : 4.:/5 (64 download)

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Book Synopsis Synthesis, Characterization and Properties of Nano-sized Transition Metal Oxides by : Ming Yin

Download or read book Synthesis, Characterization and Properties of Nano-sized Transition Metal Oxides written by Ming Yin and published by . This book was released on 2005 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Synthesis and Characterization of Mixed Transition Metal Oxides and Their Composites with Carbon for Energy Storage Applications

Author : Tarekegn Heliso Dolla
Publisher :
ISBN 13 :
Total Pages : 172 pages
Book Rating : 4.:/5 (117 download)

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Book Synopsis Synthesis and Characterization of Mixed Transition Metal Oxides and Their Composites with Carbon for Energy Storage Applications by : Tarekegn Heliso Dolla

Download or read book Synthesis and Characterization of Mixed Transition Metal Oxides and Their Composites with Carbon for Energy Storage Applications written by Tarekegn Heliso Dolla and published by . This book was released on 2019 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Handbook of Hydrothermal Technology

Author : K. Byrappa
Publisher : William Andrew
ISBN 13 : 1437778364
Total Pages : 796 pages
Book Rating : 4.4/5 (377 download)

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Book Synopsis Handbook of Hydrothermal Technology by : K. Byrappa

Download or read book Handbook of Hydrothermal Technology written by K. Byrappa and published by William Andrew. This book was released on 2012-12-31 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quartz, zeolites, gemstones, perovskite type oxides, ferrite, carbon allotropes, complex coordinated compounds and many more -- all products now being produced using hydrothermal technology. Handbook of Hydrothermal Technology brings together the latest techniques in this rapidly advancing field in one exceptionally useful, long-needed volume.The handbook provides a single source for understanding how aqueous solvents or mineralizers work under temperature and pressure to dissolve and recrystallize normally insoluble materials, and decompose or recycle any waste material. The result, as the authors show in the book, is technologically the most efficient method in crystal growth, materials processing, and waste treatment. The book gives scientists and technologists an overview of the entire subject including: À Evolution of the technology from geology to widespread industrial use. À Descriptions of equipment used in the process and how it works.À Problems involved with the growth of crystals, processing of technological materials, environmental and safety issues.À Analysis of the direction of today's technology. In addition, readers get a close look at the hydrothermal synthesis of zeolites, fluorides, sulfides, tungstates, and molybdates, as well as native elements and simple oxides. Delving into the commercial production of various types, the authors clarify the effects of temperature, pressure, solvents, and various other chemical components on the hydrothermal processes. Gives an overview of the evolution of Hydrothermal Technology from geology to widespread industrial use Describes the equipment used in the process and how it works Discusses problems involved with the growth of crystals, processing of technological materials, and environmental and safety issues

Synthesis and Characterization of Ternary Transition-metal Oxides Featuring Low-dimensional Structural Elements

Author : Maren Isabell Frei
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (128 download)

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Book Synopsis Synthesis and Characterization of Ternary Transition-metal Oxides Featuring Low-dimensional Structural Elements by : Maren Isabell Frei

Download or read book Synthesis and Characterization of Ternary Transition-metal Oxides Featuring Low-dimensional Structural Elements written by Maren Isabell Frei and published by . This book was released on 2021* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Synthesis and Characterization of the Layered Transition Metal Oxides AxNbO2 (A

Author : Maria Anna Rzeznik
Publisher :
ISBN 13 :
Total Pages : 404 pages
Book Rating : 4.:/5 (33 download)

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Book Synopsis Synthesis and Characterization of the Layered Transition Metal Oxides AxNbO2 (A by : Maria Anna Rzeznik

Download or read book Synthesis and Characterization of the Layered Transition Metal Oxides AxNbO2 (A written by Maria Anna Rzeznik and published by . This book was released on 1995 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Chemically Deposited Nanocrystalline Metal Oxide Thin Films

Author : Fabian I. Ezema
Publisher : Springer Nature
ISBN 13 : 3030684628
Total Pages : 926 pages
Book Rating : 4.0/5 (36 download)

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Book Synopsis Chemically Deposited Nanocrystalline Metal Oxide Thin Films by : Fabian I. Ezema

Download or read book Chemically Deposited Nanocrystalline Metal Oxide Thin Films written by Fabian I. Ezema and published by Springer Nature. This book was released on 2021-06-26 with total page 926 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book guides beginners in the areas of thin film preparation, characterization, and device making, while providing insight into these areas for experts. As chemically deposited metal oxides are currently gaining attention in development of devices such as solar cells, supercapacitors, batteries, sensors, etc., the book illustrates how the chemical deposition route is emerging as a relatively inexpensive, simple, and convenient solution for large area deposition. The advancement in the nanostructured materials for the development of devices is fully discussed.