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.

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.

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.

Sign in / Sign up

Export Citation Format

Share Document