Investigations on Fractal Nanostructure of Zinc Oxide by Small Angle Neutron Scattering (SANS)

2014 ◽  
Vol 895 ◽  
pp. 531-534
Author(s):  
Rehana Razali ◽  
Edy. Giri Rachman Putra ◽  
Abdul Aziz Mohamed ◽  
Wan Haliza Abd Majid ◽  
W.A.T. Wan Abdullah ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Primary Particle ◽  
Morphological Structure ◽  
Molar Ratio ◽  
X Ray Diffraction ◽  
X Ray ◽  
Field Emission Electron Microscopy

The zinc oxide nanoparticles were synthesized by solvothermal method for 18 h at150 ̊ C with presence of DEA. The molar ratio of Zn2+solution and DEA was fixed at 1:1. The nanostructure was studied using Small Angle Neutron Scattering (SANS) in BATAN, Indonesia. From calculation, it shows that the material has surface fractal with primary particle size of 25 nm and agglomerate size of ̴ 200 nm. X-ray diffraction (XRD) was done and the the crystallite size was calculated using Scherrer equation. Field emission electron microscopy (FESEM) was done to observe the morphological structure. It shows that the sphere-like agglomerates construct of primary nanoparticles of ZnO.

Structural characterization of manganese-substituted nanocrystalline zinc oxide using small-angle neutron scattering and high-resolution transmission electron microscopy

2009 ◽  
Vol 42 (6) ◽  
pp. 1085-1091 ◽  
Author(s):  
B. Roy ◽  
B. Karmakar ◽  
J. Bahadur ◽  
S. Mazumder ◽  
D. Sen ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Zinc Oxide ◽  
High Resolution ◽  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron

A series of zinc oxide (ZnO) nanoparticles, substituted with manganese di-oxide, have been synthesized through a modified ceramic route using urea as a fuel. X-ray diffraction and high-resolution transmission electron microscopy studies indicate that the sizes of the ZnO particles are of nanometer dimension. Particles remain as single phase when the doping concentration is below 15 mol%. Small-angle neutron scattering indicates fractal-like agglomerates of these nanoparticles in powder form. The size distributions of the particles have been estimated from scattering experiments as well as microscopy studies. The average particle size estimated from small-angle scattering experiments was found to be somewhat more than that obtained from X-ray diffraction or electron microscopy measurement.

scholarly journals DMSO-induced dehydration of DPPC membranes studied by X-ray diffraction, small-angle neutron scattering, and calorimetry

1999 ◽  
Vol 286 (1-2) ◽  
pp. 195-202 ◽  
Author(s):  
M.A. Kiselev ◽  
P. Lesieur ◽  
A.M. Kisselev ◽  
C. Grabielle-Madelmond ◽  
M. Ollivon
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
X Ray Diffraction ◽  
X Ray ◽  
And Calorimetry

Silver behenate powder as a possible low-angle calibration standard for small-angle neutron scattering

1998 ◽  
Vol 31 (6) ◽  
pp. 957-959 ◽  
Author(s):  
R. Gilles ◽  
U. Keiderling ◽  
A. Wiedenmann
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Angular Range ◽  
Calibration Standard ◽  
X Ray Diffraction ◽  
Transmission Method ◽  
Wavelength Calibration ◽  
X Ray ◽  
Flight Measurements

Small-angle neutron scattering (SANS) is a transmission method working in the angular range 0.4–6° (2θ). In this paper, silver behenate powder [CH3(CH2)20COOAg] (referred to as `AgBE'), one of the very few materials featuring Bragg reflections in the angular range accessible to SANS instruments, is suggested as a possible new SANS wavelength calibration standard. In the past, this powder has been successfully tested as a calibration standard in low-angle X-ray diffraction. Results of new SANS wavelength calibration measurements performed with AgBE and with the traditional method of time-of-flight measurements are presented and compared with low-angle X-ray diffraction measurements.

scholarly journals Small Angle Neutron Scattering Study of a Gehlenite-Based Ceramic Fabricated from Industrial Waste

2019 ◽  
Vol 290 ◽  
pp. 22-28
Author(s):  
Chee Wah Loy ◽  
Khamirul Amin Matori ◽  
Norhazlin Zainuddin ◽  
Andrew E. Whitten ◽  
Liliana de Campo ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Soda Lime ◽  
X Ray Diffraction ◽  
X Ray ◽  
Intermediate Phases ◽  
Solid State Sintering ◽  
Scattering Study ◽  
Neutron Scattering Study

This paper presents a small angle neutron scattering (SANS) study of a novel porous gehlenite-based ceramic, synthesised from a homogeneous powder mixture of soda-lime-silicate (SLS) glass, α-alumina, calcite and calcium fluoride via solid-state sintering at 1200 °C. The products of sintering at single temperatures from 600 to 1200 °C are examined by X-ray diffraction (XRD). Sintering of the mixture below 1200 °C forms two intermediate phases (Na2CaSi3O8 and Ca4Si2O7F2). Nepheline and α-alumina are minor phases in the gehlenite-based ceramic fabricated through sintering at 1200 °C. The microstructure of the gehlenite-based ceramic is investigated using field-emission scanning electron microscopy (FESEM) and SANS at the Australian Centre for Neutron Scattering. This study also evaluated the specific surface area of the gehlenite-based ceramic (~3.0 m2 cm–3) from quantitative analysis of SANS data.

Morphology of TiO2 Aerogels

1994 ◽  
Vol 346 ◽  
Author(s):  
Zhu Zhu ◽  
Micha Tomkiewicz
Keyword(s):  
Titanium Dioxide ◽  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Nitrogen Adsorption ◽  
X Ray Diffraction ◽  
X Ray ◽  
Electron Microscopies ◽  
Transmission Electron ◽  
Complementary Techniques

ABSTRACTThe morphology of titanium dioxide aerogel was studied using a variety of complementary techniques that include: nitrogen adsorption, Small-Angle Neutron Scattering (SANS), scanning and transmission electron microscopies (SEM/TEM) and X-ray diffraction. Since these techniques sense different components of the microstructure, global parametrization should coalesce the results into a uniform framework.

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