virus enabled synthesis and assembly of nanowires for lithium ion battery electrodes 885
Báo cáo hóa học: " Low-temperature synthesis of CuO-interlaced nanodiscs for lithium ion battery electrodes" potx
Ngày tải lên :
21/06/2014, 03:20
... [27] Formation of composites by incorporation of MWCNTs can provide an enhanced electronic conductivity of electrodes and elastic buffers for releasing the strain of CuO during the Li conversion ... for lithium- ion batteries Chem Mater 2008, 20:3617 doi:10.1186/1556-276X-6-397 Cite this article as: Seo et al.: Low-temperature synthesis of CuOinterlaced nanodiscs for lithium ion battery electrodes ... morphologies and their application as anodes for lithium ion batteries J Power Sources 2010, 195:313 Zhang X, Zhang D, Ni X, Song J, Zheng H: Synthesis and electrochemical properties of different sizes of...
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Template assisted synthesis and assembly of nanoparticles 1
Ngày tải lên :
12/09/2015, 08:16
... ligand (indirect method) For in situ preparation method, two pathways including direct deposition and precursor decomposition/reduction have been applied in the preparation of nanoparticles For ... materials and have recently gained attention as benign solvents for the synthesis of inorganic nanoparticles18, 19 Others such as ionic liquid, sonochemical synthesis, laser ablation and microwave ... method78 They have summarized the synthesis and applications of multi-segmented one-dimensional nanorods and nanowires with metal, semiconductor, and polymer using ion- track-etched or AAO templates...
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Template assisted synthesis and assembly of nanoparticles 2
Ngày tải lên :
12/09/2015, 08:16
... solution and stirred at room temperature for hour After which, an equimolar amount of propylamine was added to the solution and the solution was stirred further for hour The color of the solution ... region IR glass (for iHR320) and water 59 Chapter (for PMT) was used to calibrate the detectors each time before the sample measurement For all samples, both the slit width of the emission and ... was formed accompanying the formation of Ag2S nanoparticles Ethanol was then added to precipitate the nanoparticles formed and thus terminating the reaction The solution was centrifuged and the...
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Template assisted synthesis and assembly of nanoparticles 3
Ngày tải lên :
12/09/2015, 08:16
... –N= and –NH– functional groups, when Ag2S nanoparticles are formed Finally, the applications of these nanocomposites as ISE are studied in Section 3.3 3.1 Synthesis and Characterization of PANi/Ag2S ... strong absorption bands in the UV region31 In Figure 3.10, we monitored the UV-visible absorption spectrum of the reaction solution at different stages of the reaction In particular, for the PANi ... the thickness of film is bigger than 125 nm, ion exchange has reached the diffusionlimited regime for films of this thickness and the diffusion and exchange rate is independent of film thickness...
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Template assisted synthesis and assembly of nanoparticles 4
Ngày tải lên :
12/09/2015, 08:16
... when large amount of DDT (10 times of PbTB) was added The formation of large aggregation of PbS particles (Figure 4.15b) is indicative of a fast decomposition Thus, this observation suggested that ... function of DDT in the formation of organo-clay/PbS nanocomposites The effect of DDT on the size and distribution of PbS nanoparticles in organo-clay matrix was also investigated The amount of ... without ODA and a series of samples with varying amount of DDT were prepared and the results are discussed in the following sub-sections The function of ODA in the formation of organo-clay/PbS nanocomposites...
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Template assisted synthesis and assembly of nanoparticles 5
Ngày tải lên :
12/09/2015, 08:16
... preparation and properties of aCNT/PbS nanocomposites In Section 5.1 of this chapter we will discuss the preparation and characterization of MWCNT/PbS nanocomposites prepared by in situ decomposition ... slow evaporation speed and high concentration of PbTB, while the width and height of polygon can be varied by changing the aspect ratio of CNTs and the initial feed concentration of PbTB Other ... procedure Details of synthesis are given in Section 2.6.2 and Table 2.11 of Chapter Morphology characterization of aCNT/PbS nanocomposites SEM was used to characterize the morphology of aCNT/PbS composites...
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Template assisted synthesis and assembly of nanoparticles 6
Ngày tải lên :
12/09/2015, 08:16
... templating and capillary forces to assemble colloidal particles into uniform aggregates and structures The assembly of colloidal particles relies on the interaction between particle and/ or particles and ... the size of the small sphere; (C) Calculations steps to estimate the area of the void; and the maximum size of the small sphere, AS, and cube, AC Table 6.1 Estimation of maximum sizes of the small ... templates, calculations were carried out to determine the size of PS beads needed for the assembly of specific sizes of nanoparticles Figure 6.1 illustrated the calculations and Table 6.1 gave...
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Synthesis and assembly of copper and copper (i, II) oxides nanostructures
Ngày tải lên :
14/09/2015, 13:51
... application and synthesis of cuprous oxide (Cu2O) 29 2.4.1 Crystal structure and application of cuprous oxide (Cu2O) 29 2.4.2 Methods of preparation of copper (I) oxide 32 2.4.2.1 Sol-gel formation of ... attachment for formation of thin crystal planes and constructuion of hollow octahedra in a plane-by-plane manner; and (3) three-dimensional oriented attachment for solid nanocubes and creation of hollow ... Results and Discussion 53 iv 4.4 Conclusion 73 CHAPTER MANIPULATIVE -SYNTHESIS OF MULTIPOD FRAMEWORKS FOR SELF-ORGANIZATION AND 75 SELF-AMPLICATION OF Cu2O MICROCRYSTALS 5.1 Introduction 75 5.2...
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Báo cáo vật lý: "Mechanochemical Synthesis and Characterisation of Bismuth-Niobium Oxide Ion Conductors" ppsx
Ngày tải lên :
07/08/2014, 14:20
... mixing of chemicals and therefore can speed up the reaction rate and reduce the synthesis temperature The XRD patterns of BixNbOδ (2 ≤ x ≤ 7) solid solutions are shown in Figure Solid solutions ... properties Preparation via a traditional solid-state reaction usually requires high temperatures and long firing cycles leading to the inevitable coarsening of particles and aggregation of the powders, ... grateful for financial support given by the Ministry of Science, Technology, and Innovation (MOSTI) via the Science Fund and National Science Fellowship (NSF) scholarship for S.N Ng Journal of Physical...
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Electrode formulation of si and lini0 5mn1 5o4 for li ion battery applied to electric traction
Ngày tải lên :
19/05/2016, 10:44
... presence of liquid electrolyte and the changes of volume which happens at the time of the insertion and the deinsertion of lithium in the AM [7] The choice of the non-electroactive additives and the ... extraction of lithium ions into Si such as modification of Si morphologies/structures, use of additional phase to buffer the volume expansion, limitation of the capacity etc.[24] The main research of ... Fundamentals of Materials for Energy and Environmental Sustainability, Cambridge University Press, 2012 Figure 1-3 Schematic representation of a lithium- ion battery based on intercalation reactions [6]...
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Synthesis and characterization of silicon nanowires using tin catalyst for solar cells application
Ngày tải lên :
16/03/2014, 15:12
... performance Therefore, further reduction of the reflectance will be expected from the optimization of the synthesis conditions of SiNWs For analysis of the electrical properties, the I–V curve of the fabricated ... difference of the reflectance might be the effect of synthesis conditions, such as thickness of metal film and SiH4 gas flow The reduction of reflectance is very helpful to improve the solar cell performance ... of the fabricated SiNWs solar cell under dark and light conditions the thickness of Si base substrate more thinly For improvement of conversion efficiency of the SiNWs solar cells, the reduction...
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Synthesis and characterization of semiconducting nanowires for gas sensing
Ngày tải lên :
16/03/2014, 15:25
... were used for the investigation of the shape of the nanowires and impurities and local variations in the composition (Z-contrast) 3.1 SnO2 nanowires Fig Nucleation of indium oxide nanowires over ... degree of homogeneity and crystalline arrangement High-resolution TEM imaging is useful for investigation of the termination of the nanowire lateral sides and apex Electron diffraction (ED) and ... investigation of size reduction effects on the electrical and gas sensing behavior of ZnO nanowires Fig Characteristics of In3 O2 nanowires: (a) SEM image of In3 O2 nanowires, (b) TEM image of nanowire...
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Báo cáo khoa học: Synthesis and characterization of a new and radiolabeled high-affinity substrate for H+/peptide cotransporters pdf
Ngày tải lên :
07/03/2014, 05:20
... parameters and transport characteristics of Bip-[3H]Pro Results and Discussion Synthesis, chemical characterization and stability of Bip-Pro Figure shows the structure (Fig 1A) and the synthesis ... mixture of cis and trans conformers in aqueous solution (pH 6.0) In the 1H NMR spectrum, Bip-Pro exhibited two sets of NMR signals indicating the existence of two conformations Fig Structure and synthesis ... between Bip-CaH and Pro-CaH of the minor isomer was used as evidence for its cis conformation The relative populations of the cis ⁄ trans isomers were determined by integration of well-resolved...
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Synthesis and Application of Nanosize Semiconductors for Photoxidation of Toxic Organic Chemicals pptx
Ngày tải lên :
14/03/2014, 20:20
... Excavation, Soil Washing Conventional Treatment Options: 1)Filtration and/ or Adsorption of toxic chemicals in aqueous supernatant from Step 2)Chemical Oxidation or Total Mineralization of the ... in both dispersed and heterogeneous forms (supported) tsnl Advantanges of this Approach•The light absorption and energy levels of the semiconductor valence and conduction bands can be adjusted ... because both valence and conduction bands are localized on the metal, so carrier excitation doesn’t weaken any chemical bonds tsnl MoS2 synthesis, purification, and characterizationSynthesis in Inverse...
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hydrothermal synthesis and photoluminescence of tio2 nanowires
Ngày tải lên :
19/03/2014, 16:48
... the PL spectra of the TiO2 nanowires at room temperature together with that for TiO2 nanocrystals The excitation wavelength for curves (1) and (2) is 413 nm, and that for curves (3) and (4) is 473 ... (JEM-2010) Samples for SEM observation were presputtered with a layer of conducting Pt metal Samples for TEM observation were prepared by 10 ultrasonic dispersion of a small amount of sample in absolute ... stripe image of the (1 1) plane of anatase TiO2 , which showed the formation of single crystalline anatase TiO2 nanowires in our experiments The growth of single-crystalline TiO2 nanowires in...
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synthesis and application of dna-templated silver nanowires
Ngày tải lên :
20/03/2014, 13:08
... reduction, a peak formed at 415 nm, demonstrating the formation of more and more metallic silver Fig Tapping mode AFM images of DNA-Ag nanowires with different reduction time, (a) the reduction ... was applied for the metallization of λ-DNA But a complex reduction bath solution was used to the fabrication In experiment, λ-DNA solution and AgNO3 solution were mixed to incubate for several ... structure of DNA-templated silver nanowires, (b) shows enlargement of the DNA-Ag nanowires Fig Conductivity variation of the DNA-templated nanowires exposed to different concentrations of ammonia...
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thermal oxide synthesis and characterization of fe3o4 nanorods and fe2o3 nanowires
Ngày tải lên :
20/03/2014, 13:11
... composition of the sample, and the results can be seen in Figure 4(d) It can be clearly identified that the nanorods were composed of Fe and O elements, and the ratio of the number of atoms Fe and ... Fe sheet was nanowires with the size of 100－300 nm in Figure 5(b) It was obvious that the addition of oxalic acid was benefit for the formation of nanorods in the temperature range of 200－500℃ ... sheet of iron with size of 1×1 cm was polished by the sand paper and dealt with alcohol in ultrasonic for 15 Then, it was placed in quartz boat and a drop of oxalic acid (0.75 mol·L−1) solution...
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Báo cáo hóa học: " Rift Valley fever virus structural proteins: expression, characterization and assembly of recombinant proteins" potx
Ngày tải lên :
20/06/2014, 01:20
... capable of virus replication and transmission and thus increasing the possibilities of outbreaks in Sub-Saharan regions [5,6] RVFV is an enveloped virus with a diameter of 90 to 110 nm and a core ... unknown, Gn and Gc are sufficient for virus entry during infection and a low pH activation after endocytosis of the virion is essential for this process [20,21] Studies on RVFV infection process and ... filtration The position of the peak correspondent to N and the relative elution position of molecular markers are indicated C) Samples of the gel filtration fractions corresponding to the peak of...
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Báo cáo toán học: " Synthesis and characterization of CuO nanowires by a simple wet chemical method" pdf
Ngày tải lên :
20/06/2014, 21:20
... µL of TG is added to solution A, and the solution is stirred for a few minutes Solution B is then added to the reaction mixture, and water is immediately added Further stirring continued for ... chemical method, the synthesis of copper oxide nanowires with diameters of 90 nm and lengths of several micrometers has been successfully carried out The concentration and quantity of precursors are ... gates and computation from assembled nanowire building blocks Science 2001, 294:1313-1317 Hu J, Odom TW, Lieber CM: Chemistry and physics in one dimension: synthesis and properties of nanowires and...
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Báo cáo hóa học: " Synthesis and characterization of integrated layered nanocomposites for lithium ion batteries" ppt
Ngày tải lên :
20/06/2014, 23:20
... a range of stoichiometric compositions Therefore, the present work reports on the synthesis and systematic investigations on the structure, morphology, and electrochemical performances of an integrated ... areas; hence, shorter are the Li -ion diffusion paths The reduced ion migration pathways lead to effective ion diffusion and ultimately enhance material properties/performances However, the significant ... lower lithium content most probably resulted from the evaporation loss of lithium during heat treatment at elevated temperatures The possibilities for such lithium losses during high temperature synthesis...
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