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Use of wide-angle X-ray diffraction to measure shape and size of dispersed colloidal particles

Qazi, SJS; Rennie, AR; Cockcroft, JK; Vickers, M; (2009) Use of wide-angle X-ray diffraction to measure shape and size of dispersed colloidal particles. J COLLOID INTERF SCI , 338 (1) 105 - 110. 10.1016/j.jcis.2009.06.006.

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Abstract

Laboratory X-ray diffraction is used to investigate the size and shape of dispersed plate-like and spherical colloidal particles. Analysis of the wide-angle diffraction data provides information about the size and shape of crystals from the width of the Bragg peaks according to the Debye-Scherrer formula. The measurements, data analysis, and evaluation are discussed. It is shown that X-ray diffraction with conventional laboratory equipment on dispersed particles is feasible as a tool to determine both particle size and shape. Data for two samples - gold colloids and nickel (II) hydroxide particles are presented. The advantages and limitations of the method are discussed. X-ray diffraction measurements that are made in combination with dynamic light scattering can be used to estimate the thickness of stabilizing layers of polymers. (C) 2009 Elsevier Inc. All rights reserved.

Type:Article
Title:Use of wide-angle X-ray diffraction to measure shape and size of dispersed colloidal particles
DOI:10.1016/j.jcis.2009.06.006
Keywords:Size determination, Shape analysis, X-ray diffraction, Gold particles, Nickel hydroxide colloids, GOLD NANOPARTICLES, VOIGT FUNCTION, MOLECULES, CHEMISTRY, NI(OH)2, SYSTEM
UCL classification:UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry

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