Autogenic Synthesis of Green- and Red-Emitting Single-Phase Pr₂O₂CO₃ and PrO_1.833 Luminescent Nanopowders

Abstract

This Article reveals a rare synthesis of pure Pr(2)O(2)CO(3) (POC) nanopowder by thermolysis (700 °C) of a single chemical precursor in an autogenic reaction. The autogenic thermolysis of praseodymium acetate is a solvent-free, efficient, and straightforward approach yielding luminescent POC nanoparticles. The as-prepared POC nanopowder converted to PrO(1.833) (PO) powder via combustion. Methodical morphological, structural, and compositional characterizations of POC and PO powders are carried out, supported by mechanistic elucidation and the photoluminescent properties.

Nano- and micro-sized rare-earth carbonates and their use as precursors and sacrificial templates for the synthesis of new innovative materials

“…Pol et al and Calderon Moreno et al reported the use of this technique for the syntheses of RE 2 O 2 CO 3 . 100,101 In these syntheses a rare-earth acetate salt is used as the reactant. The salt is sealed in a stainless steel reactor, which is placed in a furnace heated to 700 1C for various amounts of time.…”

“…Calderon Moreno et al reported the synthesis of Pr 2 O 2 CO 3 by employing this technique. 101 The thermolysis was carried out at a maximum pressure of B2 MPa for 1 h. The vessel was cooled to room temperature and the obtained powder could be analyzed without any purification. TEM and SEM analysis showed that particles 100-200 nm in size, which are connected to each other are formed.…”