Synthesis of metal oxide nanostructures and their applications as lithium ion battery anodes
Synthesis of metal oxide nanostructures and their applications as lithium ion battery anodes
... IONP@PC and IONP@mC-600 Insets of C and F: SAED patterns of IONP@PC and IONP@mC-600 95 Figure 6-4: Particle size distributions of (A) IONP@PC and (B) IONP@mC-600 96 Figure 6-5 TEM images of IONP@mC-600 ... iron oxides and lithium was in the 1980s.[51] However, the nature of the reaction was not clear until J M Tarascon and his coworkers reported the conversion reaction between transition metal oxides ... as TiO2[30] and Li4Ti5O12[17]; (2) alloying based materials, such as Si,[31] Ge,[32] Sn,[33] and their oxides/composites; (3) conversion reaction based materials, including transition metal oxides,[34]...
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Design and synthesis of functional graphene composites and their applications
... DESIGN AND SYNTHESIS OF FUNCTIONAL GRAPHENE COMPOSITES AND THEIR APPLICATIONS JANARDHAN BALAPANURU M.Sc., University of Pune, India A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY ... bond of graphene and (b) formation of bond between organic functional groups and oxygenated-groups of GO (a) Addition of free radicals to sp2-carbon of graphene: Upon heating the mixture of diazonium ... functional graphene composites for various applications In this thesis, the design and synthesis of various graphene- based composites and their potential applications have been discussed with regards...
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Báo cáo hóa học: " One-Pot Synthesis of Biocompatible CdSe/CdS Quantum Dots and Their Applications as Fluorescent Biological Labels" doc
... doi:10.1007/s11671-010-9774-z Cite this article as: Zhai et al.: One-Pot Synthesis of Biocompatible CdSe/CdS Quantum Dots and Their Applications as Fluorescent Biological Labels Nanoscale Res Lett 2011 ... temperature, and 19 mg of Se powder was added Finally, the mixture was heated to 240°C and kept for a certain period of time such as 1, 5, 60, and 120 Synthesis of CdSe/CdS QDs As sulfur source, ... monochromaticity of the fluorescence but also the quantum yields of the QDs In our case, the quantum yields of the as- synthesized CdSe cores are around 2–3% In order to passivate their surface trap sites and...
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SYNTHESIS AND STUDY OF ZINC OXIDE NANOSTRUCTURES AND FILMS
... chemical synthesis commonly used for nanostructures such as powders, films, fibers, and monoliths.28 Typical sol–gel process involves hydrolysis and condensation of metal alkoxides and metal ... 73 (2009) 24 Chapter 2: Synthesis and Characterization Wee Rui Qi Chapter 2: Synthesis and Characterization 2.1 Fabrication of Samples 2.1.1 Sputtering of Zn and ZnO Thin Films A brief introduction ... thin layer of zinc (Zn) used in Chapters Three and Four, and zinc oxide (ZnO) used in Chapter Five Physical vapor deposition (PVD) is a general term used to describe any of a variety of methods...
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synthesis of iron oxide nanorods and nanocubes in an imidazolium ionic liquid
... Conclusion In conclusion, nanorods, nanocubes and nanospheres of iron oxide have been synthesized in [BMIM][Tf2 N] ionic liquid Oleic acid plays an important role in the shape control of nanostructures ... Oleylamine and 1,2-hexadecanediol are required co-surfactants in controlling the formation of nanorods of iron oxide The different solubility of precursors, reactive intermediates and nanoparticles ... images and (D) PXRD pattern of iron oxide nanocubes: (A and B) nm nanocubes made from a reaction solution at Fe(CO)5 concentration of 50 mM and Fe(CO)5 :oleic acid molar ratio of 1:1, and (C)...
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Báo cáo hóa học: " Research Article Normality Criteria of Lahiri’s Type and Their Applications" pdf
... family In 2009, Charak and Rieppo generalized Theorem C and obtained two normality criteria of Lahiri’s type Journal of Inequalities and Applications Theorem D Let F be a family of meromorphic functions ... 2.1 Journal of Inequalities and Applications Suppose that z0 is a zero of f of multiplicity p ≥ k , then z0 is a zero of Ψ of multiplicity dp − Σk jnj , and thus is a pole of Ψ − c /Ψ of multiplicity ... New Zealand Journal of Mathematics, vol 34, no 1, pp 61–65, 2005 K S Charak and J Rieppo, “Two normality criteria and the converse of the Bloch principle,” Journal of Mathematical Analysis and Applications,...
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Báo cáo hóa học: " A general strategy for synthesis of metal oxide nanoparticles attached on carbon nanomaterials" pptx
... article as: Zhao et al.: A general strategy for synthesis of metal oxide nanoparticles attached on carbon nanomaterials Nanoscale Research Letters 2011 6:71 Submit your manuscript to a journal ... summary, we report a general strategy for synthesis of a large variety of metal oxide NPs on CNMs, including SWNTs, MWNTs, and a few-layer graphene The approach was based on the π-π interaction ... new class of hybrid nanomaterials offers a great potential application in sustainable energy, environment, and even biomedicine Additional material Additional file 1: Supporting information Experimental...
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Báo cáo hóa học: " Hydrothermally Processed Oxide Nanostructures and Their Lithium–ion Storage Properties" potx
... as -hydrothermally synthesized nanowires: a specimen No and b specimen No Results and Discussions After a series of hydrothermal experiments determining optimum working conditions in Y- and Si -oxide ... 290.0 and 454.2°C, corresponding to the reactions Y(OH)3 ? YOOH and YOOH ? Y2O3, respectively In Si-based system, on the other hand, both endothermic and exothermic peaks appeared at 248.1 and ... (EC) and dimethyl carbonate (DMC) (1:1 by volume, provided by MERCK, Germany) The cells were galvanostatically charged and discharged over a voltage range of 0–3.0 and 2.5–4.5 V for anode and...
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Báo cáo hóa học: " A Versatile Route for the Synthesis of Nickel Oxide Nanostructures Without Organics at Low Temperature" doc
... non-toxic, and mass production route for the synthesis of other functional oxide materials Experimental Preparation of NiO Nanostructures In a typical synthesis, appropriate amount of nickel powder was ... plays an essential role in the precursor material transformation because the vapor pressure is much higher and the state of water at elevated temperatures is different from that at room temperature ... by the solvents and organics in the structural evaluation of NiO nanostructures The EDX measurement indicates that nanoparticles are composed of Ni and O, and the analysis in the NiO nanoparticles/nanoflowers...
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Synthesis of various magnetic nanostructures and the microwave characterizations 1
... between these two parameters can be reduced when the permeability of the magnetic materials is high 1. 1.3 Snoek’s law For soft magnetic bulk materials, the product of the intrinsic permeability μi and ... μi at microwave frequency band There is another expression of Snoek’s law for planar materials, which is given as[8] 1/ 2 H (μi − 1) fr = γ4πMs ( ) H ea (1. 11) where 𝐻ℎ𝑎 and 𝐻 𝑒𝑎 are the out -of- plane ... that both of the enhancement in the saturation magnetization and the induce shape anisotropic field into the particles can extend the Snoek’s limitation 1. 1.4 Skin effect In the view of the Snoek’s...
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Synthesis of various magnetic nanostructures and the microwave characterizations 2
... ZF2 12 Zn0 .29 0Fe2.710O4 28 20 ZF3 12 Zn0.387Fe2.613O4 28 20 ZF3 _26 .5 Zn0.38Fe2.62O4 28 20 ZF3_13.4 7 .2 3.6 Zn0.38Fe2.62O4 28 20 ZF4 12 Zn0.468Fe2.532O4 28 20 ZF5 12 10 Zn0. 522 Fe2.478O4 28 20 ... 20 ZF6 12 12 Zn0. 524 Fe2.476O4 28 20 ZF7 12 14 Zn0. 527 Fe2.472O4 28 20 Note: The particle sizes of samples ZF0 to ZF7 are all around 100nm, while the particle sizes of samples ZF3 _26 .5 and ZF3_13.4 ... from 28 Chapter Characterization techniques nm to 430 nm 2. 1.4 Synthesis of Zn-ferrite nanoparticles by thermal decomposition method Table 2. 2 The amounts of starting material for the synthesis of...
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Synthesis of various magnetic nanostructures and the microwave characterizations 3
... ratio of Fe to Si about 5.4 Fig 3. 2(e1, e2, e3 and e4) are elemental mappings of C, O, Fe and Si, respectively, as labeled in the images The carbon shown in both of the EDS spectrum and the mapping ... surface of Fe particles is also evidenced by the EDS spectrum and elemental mapping The chemical analysis from the EDS spectrum in Fig 3. 2d 47 Chapter Synthesis and microwave absorbing properties of ... verify the effectiveness of the calculation models Furthermore, the microwave absorbing performance of as-synthesized core/shell structure was investigated 3. 2 Experimental results 3. 2.1 Characterizations...
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Synthesis of various magnetic nanostructures and the microwave characterizations 4
... and the wall of the chamber The larger particles of the product get retained at the periphery of the chamber by centrifugal force and the smaller particles exit from the central port of the chamber ... ball milling and jet milling routes Fig 4. 11 The relationship of electromagnetic parameters and frequency in the range of 0.1~18 GHz:(a) and (b) are the real and imaginary part of measured complex ... selected for further investigations on the size-controllable synthesis and the microwave absorption performance 4. 2.2 Fabrication and characterizations of micron and submicron Fe/Al flakes Sample...
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Synthesis of various magnetic nanostructures and the microwave characterizations 5
... monitoring the change in the magnetic moment 74 Chapter Size controllable synthesis of octahedral Fe3O4 nanoparticles and the microwave absorbing properties of the reaction solution during the synthesis ... nm Fig 5. 5 TEM images of the as-obtained Fe3O4 nanoparticles by reducing the concentration of oleic acid: A) 0. 35, B) 0.19, C) 0.10 and D-E) 0.07 M 5. 2.3 Synthesis and characterizations of octahedral ... synthesis process To trace the progress of the reaction, aliquots of the solution were sampled using a syringe As shown in Fig 5. 1, Fig 5. 1 The change of the magnetic moment of the reaction solution...
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