Wydział Chemii

Lucyna Macalik

P. E. Tomaszewski

A. Matraszek

I. Szczygieł

Piotr Solarz

Patrycja Godlewska

Marcin Sobczyk

Jerzy Hanuza

2011

Journal of Alloys and Compounds

509

7458-7465

10.1016/j.jallcom.2011.04.077

Naukowa

Angielski

Artykuł

The rod- and stick-shaped nanocrystalline cerium and lanthanum orthophosphates, pure and Pr³⁺ doped, have been synthesised by the hydrothermal method in acidic (pH 1) or alkaline (pH 11) environment. Subsequent calcination of as-obtained powders at different temperatures, 500 and 900 °C, led to the formation of hexagonal and monoclinic phases, respectively. The hexagonal phase at room temperature has been identified as hydrated orthophosphate with zeolite water inside the channels of the structure. The monoclinic phase is free of water.

The average grain size is about 12–30 nm depending on the calcination temperature and preparation conditions. The structural, morphological and optical (vibrational and luminescent) properties have been characterised and their changes due to the temperature and different acidity in the starting materials have been studied.

Rare earth orthophosphates, Nanostructured materials, Hydrothermal synthesis, Optical properties

https://doi.org/10.1016/j.jallcom.2011.04.077

http://www.elsevier.com