2023
DOI: 10.1021/acs.langmuir.3c01900
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Synthesis of Submicron-Sized Spherical Silica-Coated Iron Nickel Particles with Adjustable Shell Thickness via Swirler Connector-Assisted Spray Pyrolysis

Delyana Ratnasari,
Eka Lutfi Septiani,
Kiet Le Anh Cao
et al.

Abstract: Silica-coated iron nickel (FeNi@SiO2) particles have attracted significant attention because of their potential applications in electronic devices. In this work, submicron-sized spherical FeNi@SiO2 particles with precisely controllable shell thickness were successfully synthesized for the first time using a swirler connector-assisted spray pyrolysis system, comprising a preheater, specific connector, and main heater. The results indicated that the thickness of the SiO2 shell can be tuned from 3 to 23 nm by adj… Show more

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Cited by 5 publications
(8 citation statements)
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“…The higher crystal size in the low N FeNi value ( FNS-1.9–29 ) could be attributed to the heat transfer phenomenon. The lower number of FeNi cores resulted in less solvent being evaporated from the droplets, leading to increased heat transfer toward the FeNi core and triggering crystal growth. ,, Particle morphology analysis revealed spherical and hundreds of nanometer-sized particles with narrowed particle size distribution in both samples (Figure (b),(c)). However, certain detailed distinctive characteristics were observed.…”
Section: Results and Discussionmentioning
confidence: 96%
See 2 more Smart Citations
“…The higher crystal size in the low N FeNi value ( FNS-1.9–29 ) could be attributed to the heat transfer phenomenon. The lower number of FeNi cores resulted in less solvent being evaporated from the droplets, leading to increased heat transfer toward the FeNi core and triggering crystal growth. ,, Particle morphology analysis revealed spherical and hundreds of nanometer-sized particles with narrowed particle size distribution in both samples (Figure (b),(c)). However, certain detailed distinctive characteristics were observed.…”
Section: Results and Discussionmentioning
confidence: 96%
“…The droplets were transported by 5%H 2 –Ar of carrier gas ( Q c ) at a flow rate of 5 L/min into the preheater at 900 °C ( T p ). The FeNi precursor droplets were decomposed and altered into solid particles comprising iron–nickel–oxide (FeNiO) . Second, the resulted FeNiO solid particles from the preheater were introduced by the silica precursor in the connector.…”
Section: Methodsmentioning
confidence: 99%
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“…However, when the reheating process in air was directly performed in the first step, several particles in TNP0. 5-air exhibited open pores after the reheating process (Figure S3a). These open pores were formed because of the rapid decomposition of the remaining PMMA during the reheating process in air.…”
Section: Co Conversionmentioning
confidence: 99%
“…The development of submicron nanostructured particles with highly controlled structures and morphologies (e.g., porous, , hollow, , and core–shell , ) is important for advancing the next generation of fine particles. Among nanostructured particles, macroporous particles have attracted considerable attention due to their unique advantages in material performance. By introduction of macropores, the particles can efficiently utilize their internal parts and concurrently improve their performance.…”
Section: Introductionmentioning
confidence: 99%