Molten-salt synthesis of tetragonal micron-sized barium titanate from a peroxo-hydroxide precursor

Özen, Murat; Mertens, Myrjam; Snijkers, Frans; D’Hondt, Hans; Cool, Pegie

doi:10.1016/j.apt.2016.09.007

Cited by 6 publications

(1 citation statement)

References 31 publications

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“…The melting point of the selected salt should be appropriate for the synthesis of the required phase of nanomaterials. The formation of nanomaterials is ultimately governed by the melting point of salts used as molten solvents, such as alkali chloride, sulfate, carbonate, or hydroxide 1,6,31,32 . It has been reported that the use of different molten salts can modify the formation temperature, thereby altering the particle size and morphology 18 .…”

Section: Discussionmentioning

confidence: 99%

Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles

Zuniga¹,

Abdou²,

Gupta³

et al. 2018

JoVE

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The development of feasible synthesis methods is critical for the successful exploration of novel properties and potential applications of nanomaterials. Here, we introduce the molten-salt synthesis (MSS) method for making metal oxide nanomaterials. Advantages over other methods include its simplicity, greenness, reliability, scalability, and generalizability. Using pyrochlore lanthanum hafnium oxide (La 2 Hf 2 O 7 ) as a representative, we describe the MSS protocol for the successful synthesis of complex metal oxide nanoparticles (NPs). Furthermore, this method has the unique ability to produce NPs with different material features by changing various synthesis parameters such as pH, temperature, duration, and post-annealing. By fine-tuning these parameters, we are able to synthesize highly uniform, non-agglomerated, and highly crystalline NPs. As a specific example, we vary the particle size of the La 2 Hf 2 O 7 NPs by changing the concentration of the ammonium hydroxide solution used in the MSS process, which allows us to further explore the effect of particle size on various properties. It is expected that the MSS method will become a more popular synthesis method for nanomaterials and more widely employed in the nanoscience and nanotechnology community in the upcoming years.

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