solid state synthesis and properties

... large number of –O–Pb–O– linkages [22] with [PbO6] octahedra and [OPb4] and [PbO4] tetrahedra form and enter [TeO4] and [TeO3] network, and forms glass phase when the system cools down, because ... distribution, and reproduction in any medium, provided the original author(s) and source are credited 123 1350 References R.A.F El-Mallaway, Tellurite Glasses Handbook: Properties and Data (CRC, ... oxygen and water to the formation of lead tellurite nanobelts The X-ray Photoelectron Spectra XPS measurements were performed to further study the composition and oxidation states of Pb and Te...

Ngày tải lên: 21/06/2014, 17:20

... nanostructures Issues of synthesis methods, structural, electrical, optical, magnetic and gas sensing properties are summarized Synthesis of ZnO Nanostructures 2.1 Vapor Transport Synthesis The most ... to the vapor transport synthesis of ZnO nanostructure, and also employ less rigorous synthesis conditions and provide great potential for device applications Physical Properties of ZnO Nanostructures ... physical properties of ZnO nanostructures, including mechanical, piezoelectric, electrical, optical, magnetic and chemical sensing properties Table Physical properties of wurtzite ZnO Properties...

Ngày tải lên: 28/04/2014, 15:06

Ngày tải lên: 13/11/2014, 09:31

... particular C-Hπ and C-HX in solid state and their properties in solid state and their role in the design and synthesis of organic solids during his studies in the late 80’s and early 90’s showed ... current and previous friends in Singapore, Anand, Durga, Deva, Gopal, Dr Vasu, Venu and many more for their help and association I want to pay my deep regards and gratitude to all my teachers and ... techniques such as solid state reactions The characterization of these solid state compounds is relatively easy if the single crystal nature is maintained at the end of the solid state reaction by...

Ngày tải lên: 09/09/2015, 11:15

... typical solid- phase synthesis reaction generally consists of a solid support, linker and substrate (Figure 1.1) Linker Substrate Solid Support Figure 1.1 Three key elements of solid- phase synthesis ... 3-45 and 3-47 123 3.7.1 Solution phase synthesis of 3-36 124 3.7.2 Solid- Phase library synthesis of 3-38, 3-39, 3-44, 4-45 and 3-47 126 3.7.3 Experimental Section 132 3.7.3.1 Solution Phase Synthesis ... 3-38 and 3-45 166 Table 4.5 Structures and inhibition values of 3-28 and 3-29 167 vii LIST OF FIGURES Figure 1.1 Three key elements of solid- phase synthesis Figure 1.2 Structure of various solid...

Ngày tải lên: 14/09/2015, 08:25

... under the E-book tab CHEMISTRY RESEARCH AND APPLICATIONS CHEMICAL REACTIONS IN GAS, LIQUID AND SOLID PHASES: SYNTHESIS, PROPERTIES AND APPLICATION G E ZAIKOV AND R M KOZLOWSKI EDITORS Nova Science ... CHEMISTRY RESEARCH AND APPLICATIONS CHEMICAL REACTIONS IN GAS, LIQUID AND SOLID PHASES: SYNTHESIS, PROPERTIES AND APPLICATION No part of this digital document may ... BAR ASSOCIATION AND A COMMITTEE OF PUBLISHERS LIBRARY OF CONGRESS CATALOGING-IN-PUBLICATION DATA Chemical reactions in gas, liquid, and solid phases : synthesis, properties, and application /...

Ngày tải lên: 28/03/2014, 10:20

... impose external forces and fluxes on the system and thus prevent it from reaching an equilibrium state They rather keep it in a nonequilibrium state, which is stationary, if the properties of the ... some critical value, and a new branch (2) of states is followed by the system This instability may lead to a change of the symmetry of the stable states Assume that the states on branch (2) have ... absorption determines a final stationary state In this state the coherent induced emission and reabsorption of bosons constitutes a long range order in space and (or) time The degree to which this...

Ngày tải lên: 17/03/2014, 14:58

Ngày tải lên: 19/03/2014, 16:48

... localized states in the band gap due to impurities.22b In light of these assignments, we suggest that the UV emission of nanorod samples in this work might correspond to the band-toband transition ... and the intensity of this peak increases relative to that of UV emission as the length of nanorods increases A similar PL pattern with two emission maxima, yet at much lower energies of 2.8 and ... 20 nm (medium), and 130 ( 30 nm (long) The strongest PL emission peaks appear at 3.60 eV (344 nm), 3.56 eV (348 nm), 3.55 eV (349 nm) for short (25 ( nm), medium (75 ( 20 nm), and long (130 (...

Ngày tải lên: 20/03/2014, 13:08

... between the ferromagnetic and paramagnetic states is 27 % and 18% for x = 0.12 and 0.14, respectively Finally, the thermal conductivity (κ) of La(Fe1-xSix)13 (x = 0.12, 0.14 and 0.15) compounds is ... amounts of high purity of La with 99.9%, Fe with 99.99% and Si with 99.999% in purified Ar atmosphere The ingots were sealed into evacuated tubes and the heat treatment for homogenization was carried ... thermopower, electrical resistivity and thermal conductivity were measured by using a Quantum Design PPMS in the temperature range from K to 300 K Results and discussion 10000 The La(Fe1-xSix)13...

Ngày tải lên: 28/03/2014, 13:20

... is the first report of the selective synthesis of ␣-Fe2 O3 superstructures and nanocubes The gassensing properties of the ␣-Fe2 O3 superstructures, nanocubes and nanoparticle aggregations with ... decomposition of ␣-FeOOH and release of H2 O Fig 5a and b show SEM image and XRD pattern of the products obtained via a hydrothermal reaction of FeCl3 with H2 O at 140 ◦ C for 12 h The SEM and XRD results ... Hydrothermal synthesis and gas sensing characters of ZnO nanorods, Sens Actuators B Chem 113 (2006) 526–531 [6] S.Y Wang, W Wang, W.Z Wang, Z Jiao, J.H Liu, Y.T Qian, Characterization and gas-sensing properties...

Ngày tải lên: 05/05/2014, 15:26

... other hand, an advantage is that the diameter can slightly be controlled by changing thermal transfer and diffusion, and hence condensation of atomic carbon and metals between the plasma and the ... compounds that surely will be used in future technologies and applications Before the first synthesis and detection of the smaller fullerenes C60 and C70, it was generally accepted that these large ... Thomas, 199 7and Saito et al., 1993]: Ch = n*a1 +m*a2 (1.1) The so-called chiral vector of the nanotube, Ch, where a1 and a2 are unit vectors in the two-dimensional hexagonal lattice, and n and m are...

Ngày tải lên: 28/05/2014, 15:03

... has been paid to the synthesis and characterization of bimetallic nanoparticles due to their unique catalytic, electronic, optical, structural and thermal properties [1-5] and subsequent technological ... “Extracellular Biosynthesis of Bimetallic Au-Ag Alloy Nanoparticles”, Small, Vol 1, pp 517-520, 2005 [25 P Raveendran, J Fu, and S L Wallen, “A simple and green method for the synthesis of Au, Ag, and Au–Ag ... Astle, and W H Beyer, Eds “CRC Handbook of Chemistry and Physics” 65th edn CRC Press, Inc Boca Raton, FL, 1984 [45] M A El-Sayed, “Some Interesting Properties of Metals Confined in Time and Nanometer...

Ngày tải lên: 04/06/2014, 15:20

... Biological Approach to Nanoparticle synthesis, Nano lett (2001)515 [25] A.Ahmad, P Mukherjee, S.Senapati, D Mandal, M.IKhan, R.Kumar and M.Sastry, Extracellular biosynthesis of silver nanoparticles ... Mukherjee, A.Ahmad, D.Mandal, S.Senapati, SR.Sainkar, M.I.Khan, R.Parishcha, P.V.Ajatkumar, M.Alam, R.Kuma and M.Sastry, Fungus – Mediated Synthetic of Silver Nanoparticles and Their Immobilization ... Guozhong Wu and Shimou Chen, Preparation ofoligochitosan stabilized silver nanoparticle by gamma irradiation, Radiation Physics and Chemistry 76 (2007) 1126 – 1131 [23] T.Tsuji, T Kakita and M Tsuzi,...

Ngày tải lên: 10/06/2014, 22:21

... measurements and data analysis, and drafted the manuscript DG and DX made the conception and design of the manuscript ZZ2 carried out the XPS measurements and data analysis JLZ and ZZ1 participated ... nanowires: Optical properties and room-temperature ferromagnetism J Appl Phys 2010, 108:043516 doi:10.1186/1556-276X-6-587 Cite this article as: Zhang et al.: Synthesis and magnetic properties of ... measurements and data analysis GY and ZS participated in the data analysis and the interpretation of the results All authors have been involved in revising the manuscript, read and approved the...

Ngày tải lên: 20/06/2014, 22:20

... of 355.8 and 93.6 Oe, respectively, for NCs and PSC, saturation magnetizations (Ms) of 125.7 and 162.5 emu/g, respectively, for NCs and PSC, and remnant magnetization (M r ) up to 46.6, and 4.5 ... of published SY and YQ: partly carried out the TEM and HRTEM experiments, as well as drafted the manuscript XL, LS, and HL: conceived of the study, and participated in its design and coordination ... metal, which will make them as promising candidates for advanced magnetic media and investigative studies on novel great magnetoresistive properties Results and discussion Figure 1a shows a typical...

Ngày tải lên: 21/06/2014, 04:20

... structure and size Moreover, c-Fe2O3 also exhibit three peaks between 500 and 700 cm-1, which is different from Fe3O4 [40, 41] The IR analysis combined with TEM images and XRD pattern can confirm the synthesis ... pattern can confirm the synthesis of a-Fe2O3–Au and Fe3O4–Au hybrid nanorods Fe3O4–Au and a-Fe2O3–Au hybrid nanorods show the combined magnetic and optical properties, which originate 123 1758 Nanoscale ... resonance band at around 520 nm [44] The exact absorption varies with nanoparticles morphology and particle surface coating Herein, compared to pure Fe3O4 and aFe2O3 nanorods, both Fe3O4–Au and a-Fe2O3–Au...

Ngày tải lên: 21/06/2014, 07:20

... 120, and 180 min, respectively Fig a The decomposition of the PL spectrum of the SiNWs treated with HF and the PL intensity varieties of the elementary bands with b H2O2 concentrations and c ... Results and Discussion SEM and TEM images of the as-grown SiNWs etched with different H2O2 concentrations for h are summarized in Fig The nanowires distribute uniformly on the whole wafers and are ... extract electrons from Si nearby and are deoxidized into Ag again The Si atoms around are oxidized and dissolved, leading to the etching of the silicon surface and the formation of the vertical...

Ngày tải lên: 21/06/2014, 08:20

Ngày tải lên: 21/06/2014, 08:20

... and LiBiO3 are synthesized at 120-200°C and that the Bi5+ state is changed to a Bi3+ state over 400°C; similar unstability may occur for the Bi5+ state in NaBiO3 The standard 36 Advances in Solid- State ... all Bi 4f5/2 and Bi 4f7/2 peaks that are normalized at 100 No corresponds to Bi0, No to Bi3+, and No to Bi5+ Nos and are the intermediate states between numbers and 4, and these states have intermediate ... Weber and R R Monchamp (1973) Luminescence of Bi4Ge3O12 : Spectral and decay properties J Appl Phys., Vol.44, 5495-5499 S Parke and R S Webb (1973) Optical Properties of Thallium, Lead and Bismuth...

Ngày tải lên: 21/06/2014, 10:20