Page 89 - Synthesis of Functional Nanoparticles Using an Atmospheric Pressure Microplasma Process - LiangLiang Lin

Solvent-Free Nickel Nanoparticles Synthesis and Engineering ‒Controllable Magnetic Properties
Chapter 5
Solvent-Free Nickel Nanoparticles Synthesis and Engineering – Controllable Magnetic Properties
This chapter is based on:
Lin L, Starostin SA, Lavrijsen R, Zhang W, Li S, Hessel V. Synthesis of Ni Nanoparticles with Controllable Magnetic Properties by Atmospheric Pressure Microplasma Assisted Process. AIChE Journal. 2018
Abstract
This chapter demonstrates the gas phase synthesis of Ni nanoparticles by plasma-assisted nickelocene dissociation at different conditions. The dissociation process and the products are characterized by complementary analytical methods to establish the relationship between operational conditions and product properties. The innovation is to show proof-of-principle of a new synthesis route which offers access to less costly and less poisonous reactant, a higher quality product, and a simple, continuous and pre/post treatment-free manner with a possibility for fine-tuning “in-flight”. Results show that Ni nanoparticles with controllable magnetic properties are obtained, while flexible adjustment of product properties can be achieved by tuning operational parameters. At the optimized condition only Ni nanoparticles in fcc phase are formed, with saturation magnetization value of 44.4 mAm2/g. The upper limit of production rate for Ni nanoparticles is estimated as 4.65×10-3 g/h using a single plasma jet, but the process can be scaled-up through a microplasma array design. In addition, possible mechanisms for plasma-assisted nickelocene dissociation process are discussed.
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