Page 113 - Synthesis of Functional Nanoparticles Using an Atmospheric Pressure Microplasma Process - LiangLiang Lin

Yttrium Oxide Nanoparticles Synthesis - a Model Study on the Plasma-Liquid Interaction and Opener to Nanophosphors
Chapter 6
Yttrium Oxide Nanoparticles Synthesis - a Model Study on the Plasma-Liquid Interaction and Opener to Nanophosphors
This chapter is based on:
Lin L, Starostin SA, Li S, Khan SA, Hessel V. Synthesis of yttrium oxide nanoparticles via a facile
microplasma-assisted process. Chemical Engineering Science. 2018;178:157-166.
Abstract
Plasma electrochemistry is an emerging technique for nanomaterial synthesis. This chapter reports the preparation of yttrium oxide nanoparticles via the plasma-assisted process by using yttrium nitrate aqueous solution as the precursor. Plasma was sustained a in pin-to- liquid configuration. The plasma-liquid interaction was monitored in-situ by optical emission spectroscopy. The morphology, structure and chemical composition of the obtained products were examined by complementary analytical methods. It was demonstrated that high purity crystalline Y2O3 nanoparticles with adjustable sizes can be fabricated via a two-step method: plasma electrodeposition of yttrium hydroxide followed by heat-treatment at various temperatures. Moreover, possible mechanisms for plasma-assisted yttrium hydroxide precipitation were discussed by correlating optical emission spectroscopic studies, plasma kinetic analysis and the precipitation equilibrium. As a proof-of-concept, this process offers a facile and environmental friendly route for rare-earth oxide nanomaterial synthesis, underpinning the development of plasma electrochemical technique for nanophosphors synthesis.
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