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X-ray powder diffraction

Tìm thấy 11+ kết quả cho từ khóa "X-ray powder diffraction"

Synthesis and X-ray powder diffraction, electrochemical, and genotoxic properties of a new azo-Schiff base and its metal complexes

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Furthermore, d–d transition bands in the spectra of the Mn(II), Co(II), Ni(II), and Cu(II) chelates were observed at 493–535 nm. 42,43 X-ray powder diffraction analysis of the mbH ligand and its metal complexes was carried out to determine the type of crystal system, lattice parameters, and the cell volume. Indexing of the diffraction patterns was performed using HighScore Plus software.

Synthesis and structural analysis of nonstoichiometric ternary fulleride K1.5Ba0.25CsC60

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Rietveld analysis of the high-resolution synchrotron X-ray powder diffraction data of the precursors and K 1.5 Ba 0.25 CsC 60 confirms that K 6 C 60 , Ba 6 C 60 and Cs 6 C 60 are single-phase and they crystallize in a body-centered- cubic structure (Im3. as reported in the literature. The analysis also shows that K 1.5 Ba 0.25 CsC 60 phase can be perfectly modeled using a face-centered cubic structure.

The magnetic properties and charge-ordering state in La1-xCaxMnO3 (x = 0.46; 0.50) compounds

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In present work we investigate the magnetic properties and charge-ordering state of La 1-x Ca x MnO 3-δ (x = 0.46 and 0.50) compounds.. The samples with nominal composition of La 1-x C x MnO 3-δ (x=0.46 and x=0.50) were prepared by standard solid-state reaction method [4]. The structure of the samples was inspected by X-ray powder diffraction (XPD) using Cu-K α radiation at room temperature. The XPD patterns of the La 1-x Ca x MnO 3-δ (x=0.46.

A Simple, One-step, Seedless Hydrothermal Growth of ZnO Nanorods on Printed Circuit Board Substrate

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The crystal structure of the ZnO nanorods was characterized by X-ray diffraction (X-ray Powder Diffraction System D5000 Siemens) and Raman spectroscopy (Labram Hr800, Horiba). The morphology of the sample surface was examined by scanning electron microscopy (SEM) (Nova NanoSEM 450). As shown in Figure 2, well-aligned ZnO nanorods are observed to stand vertically on PCB substrates at a high density.

Deposition and characterization of Cu9S5 nanocrystals from unsymmetrical [(Hex)(Me)NC(S)NC(O)C6H3(NO2)2-3,5]2Cu(II) and [(Et)(Bu)NC(S)NC(O)C6H4-4-NO2]2Cu(II) complexes by colloidal thermolysis method

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The Cu 9 S 5 nanocrystals were characterized by X-ray powder diffraction and transmission electron microscopy..

Synthesis, spectroscopic characterization, and genotoxicity of a new group of azo-oxime metal chelates

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The X-ray powder diffractograms of the [Cd(pxoxH) 2 (H 2 O) 2 ].H 2 O and [Mn(pxoxH) 2 (H 2 O) 2 ].H 2 O metal complexes were recorded using Cu–K α as the source in the 2θ range 10–50. The X-ray powder diffraction patterns of the Cd(II) and Mn(II) complexes are given in Figure 8.. The observed and calculated diffraction data of the Cd(II) and Mn(II) complexes are given in Tables 3 and 4, respectively.

Ag-grafted on ZnO nanorod arrays using UV-assisted irradiation for enhanced SERS behavior in CV detection

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Methods: The crystallinity, morphology, chemical composition, and optical properties of the pre- pared samples were investigated by X-ray powder diffraction (XRD) and field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDX), Raman system, respec- tively.

Preparation and characteristics of MIL-53 metal organic framework material with Al/Fe-bimetallic component

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Elucidating the Breathing of the Metal-Organic Framework MIL- 53(Sc) with ab Initio Molecular Dynamics Simulations and in Situ X-ray Powder Diffraction Experiments. New photocatalysts based on MIL-53 metal-organic frameworks for the decolorization of methylene blue dye.. Heterogeneous UV/Fenton-Like Degradation of Methyl Orange Using Iron Terephthalate MIL-53 Catalyst. Rapid and efficient crystallization of MIL- 53(Fe) by ultrasound and microwave irradiation. Metal-Organic.

Effects of the hybrid plasmonic Ag/SrTiO3 nanocubes for efficient photo-catalytic of H2 generation and RhB decomposition

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Method: The crystallinity, morphology, and chemical components of the photocatalyst were characterized through X-ray powder diffraction (XRD), scanning electron microscopy (SEM) equipped with energy-dispersive X-ray spectroscopy (EDX), respectively.

Ultrarapid catalytic reduction of some dyes by reusable novel erythromycin-derived silver nanoparticles

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Erythromycin-derived silver nanoparticles were characterized by ultraviolet-visible spectroscopy, scanning electron microscopy, high resolution transmission electron microscopy, X-ray powder diffraction, and Fourier transform infrared spectroscopy. Monodispersed silver nanoparticles showed excellent and promising catalytic activity for reduction of 3 differently charged dyes (eosin B, methylene blue, and rose bengal) in the presence of NaBH 4 .

Preparation of a novel solid acid catalyst with Lewis and Brønsted acid sites and its application in acetalization

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Phase composition of the prepared samples was determined by means of X-ray powder diffraction (XRD) (Rigaku D, max-3BX, Japan). Characterization of the novel catalyst. It contains a hexatomic ring with 3 nitrogen atoms and 3 tertiary amine nitrogen atoms, which can be used as the site to immobilize functionalized ionic liquid and chelate with metal ion.

Tổng hợp và ứng dụng hỗn hợp nano oxid mangan-sắt để hấp phụ As(V) từ dung dịch nước

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X-ray powder diffraction of the Mn-Fe mixed sorbent after calcination at 200°C. X-ray powder diffraction of the Mn-Fe mixed sorbent after calcination at 400°C. X-ray powder diffraction of the Mn-Fe mixed sorbent after calcination at 600°C.

Nhiễu xạ tia X

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Ủy ban hợp tỏc về cỏc tiờu chuẩn nhiễu xạ tia X theo phương phỏp bột (Joint Committee on Powder Diffraction Standards (JCPDS)) đó biờn dịch dữ kiện từ trờn 50000 giản đồ nhiễu xạ tia X chuẩn của cỏc hợp chất vụ cơ, hữu cơ, cơ kim… thành một bộ cơ sở dữ liệu..

Luminescence properties of Mn4+-doped CaAl2 O4 as a red emitting phosphor for white LEDs

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X-ray patterns of Mn 4+ -doped CaAl 2 O 4 at various temperatures.. The XRD patterns of the CaAl 2 O 4 :Mn 4+ phosphors sintered at various temperatures from 1000 to 1250°C are shown in Fig. Most of the diffraction peaks from these samples matched well with the standard Joint Committee on Powder Diffraction Standards (JCPDS) Card No..

High-temperature thermoelectric properties of Ca1 xPrxMnO3 d ð0pxo1Þ

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The quality of the prepared samples was checked by X-ray powder diffractometry. The powder XRD patterns show a single phase of the Ca 1x Pr x MnO 3d solid solution over the whole Pr-doping concentration. x = 0.20 x = 0.15. x = 0.10 x = 0.05. X-ray diffraction patterns for Ca 1x Pr x MnO 2:98. 2 shows the temperature dependence of the electrical resistivity, r, of the prepared samples in the temperature range from room temperature to 1273 K.

Synchrotron X-ray diffraction studies of β-Ca2−xMxSiO4 (M = Mg and Sr)

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A Computer Program for Rietveld Analysis of X-Ray and Neutron Powder Diffraction Patterns

X-RAY DIFFRACTION

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C s c a nhi u x tia X ơ ở ủ ễ ạ. Máy phân tích ph XRD. Đ c tr ng ph XRD c a m t s v t li u. Hình ch p x ụ ươ ng bàn tay c a bà Röngent ủ 22/12/1895. Gây ra hi n t ệ ượ ng phát quang m t s ở ộ ố ch t. Nhi u x tia X ễ ạ Huỳnh quang tia X. Phân tích c u trúc r n, v t li u… ấ ắ ậ ệ Xác đ nh hàm l ị ượ ng nguyên t có ố trong m u ẫ.

Lecture Principles of X-ray Crystallography

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Bragg, “The diffraction of short electromagnetic waves by a crystal,” in Proceedings of the Cambridge Philosophical Society, vol. Patterson, “The Scherrer formula for X-ray particle size determination,” Physical Review, vol. Molinet, “Geomatrical Theory of Diffraction(GTD) Part I: Foundation of the theory,” IEEE, vol. Molinet, “Geometrical Theory of Diffraction(GTD) Part II: Extensions and future trends of the theory,” IEEE, vol.

Lecture Physics A2: Diffraction

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(a) Find the angular limits of the first order visible spectrum produced by a plane grating with 600 slits per millimeter when white light falls normally on the grating.. suppose an incident x-ray beam makes an angle  with one of the planes as in the Figure.

Chapter XVIII Diffraction of light

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Diffraction can be understood as interference of secondary sources:. the phase of waves from secondary sources. By this method we can avoide taking an integral over all secondary sources. We can go further to a simple formula. By using the method of phasor diagrams we can find formulas for amplitudes, and then for light intensity as a function of inclination angles of the beam. It is the priciple for X-ray crystalography that is a helpfull tool in