The effects of processing parameters on formation of nano-spinel (MgAl 2 O 4 ) from LiCl moltensalt

Fazli, Rahman; Fazli, Mehdi; Safaei-Naeini, Y.; Golestani‐Fard, F.

doi:10.1016/j.ceramint.2013.01.047

Cited by 16 publications

(9 citation statements)

References 28 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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Section: Discussionmentioning

confidence: 99%

Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles

Zuniga¹,

Abdou²,

Gupta³

et al. 2018

JoVE

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“…129 The molten-salt method was used by Safaei-Naeini et al 130 precursors, suggesting that a template formation mechanism predominated in the material's synthesis. 130 Fazli et al 131 also synthesized nanocrystalline MgAl 2 O 4 spinel using a molten-salt approach. The starting precursors used were nano alumina, magnesia, and lithium chloride.…”

Section: Synthesis Of Mas By Other Nonconventional Routesmentioning

confidence: 99%

Synthesis of magnesium aluminate spinel—An overview

Baruah

Bhattacharyya

Sarkar

2023

Int J Applied Ceramic Tech

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Magnesium aluminate spinel (MAS) is a remarkable ceramic material known for its unique combination of beneficial properties. But due to volume expansion associated with spinel formation, and the high cost of production, MAS was not commercially successful till last century. However, environmental friendliness and superior properties have helped MAS to substitute magnesia-chrome refractories and are commercially acceptable with time. From an industrial perspective, solid-oxide reaction route or conventional oxide mixing route is the most popular method used for the synthesis of MAS. Although there have been myriad other common routes-coprecipitation, sol-gel, auto-ignition, molten technique, and so forth to produce spinel, solid-oxide reaction route is still the principal route from the industrial point of view owing to its ease of bulk production and low cost of production for refractory applications. This report attempts to accumulate the information on different synthesis techniques used for the synthesis of MAS for easy and ready reckoning.

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“…Hence various fabrication techniques such as sol-gel citrate technique [5],ureaformaldehyde polymer gel combustion [6], mixed fuel combustion [7], microwave assisted combustion [8], coprecipitation [9][10][11], flame spray pyrolysis [12], molten salt method [13], pechini method [14], organic precursor method [15] have been employed for the synthesis of nanoparticles of MgAl 2 O 4 .However in all these processes either complex and cumbersome steps or prolonged multiple calcinations are essentially required to obtain phase pure nano powder.…”

Section: Introductionmentioning

confidence: 99%