Line broadening in the PXRD patterns of layered hydroxides: The relative effects of crystallite size and structural disorder

Journal of Chemical Sciences

Grace S Thomas¹  P Vishnu Kamath1¹ 

[1] Department of Chemistry, Central College, Bangalore University, Bangalore 560 001$$

关键词: Layered double hydroxides;    pyroaurite;    structural disorder;    stacking faults;    turbostraticity;    interstratification;    polytypes.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

Layered hydroxides crystallize in a hexagonal structure and incorporate a number of different types of structural disorders as an exigency of anisotropic bonding. Structural disorder contributes to the non-uniform broadening of lines in the powder X-ray diffraction pattern. Common among the disorders are stacking faults, which broaden the ℎ0ℓ/0𝑘ℓ reflections. Interstratification selectively broadens the 00ℓ reflections and turbostratic disorder broadens the 0𝑘ℓ reflections. The line broadening caused by structural disorder has to be discounted before estimates of particle size are made by applying the Scherrer formula.

【 授权许可】

Unknown