Continuous flow synthesis of phosphate binding h-BN@magnetite hybrid material

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Al-Antaki, Ahmed H M
Luo, Xuan
Duan, Alex
Lamb, Robert N
Eroglu, Ela
Hutchison, Wayne D
Zou, Yi-chao
Zou, Jin
Raston, Colin L
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The Royal Society of Chemistry
Hexagonal boron nitride (h-BN) is rendered magnetically responsive in aqueous media by binding superparamagnetic magnetite nanoparticles 8.5–18.5 nm in diameter on the surface. The composite material was generated under continuous flow in water in a dynamic thin film in a vortex fluidic device (VFD) with the source of iron generated by laser ablation of a pure iron metal target in the air above the liquid using a Nd:YAG pulsed laser operating at 1064 nm and 360 mJ. Optimum operating parameters of the VFD were a rotational speed of 7.5k rpm for the 20 mm OD (17.5 mm ID) borosilicate glass tube inclined at 45 degrees, with a h-BN concentration at 0.1 mg mL−1, delivered at 1.0 mL min−1 using a magnetically stirred syringe to keep the h-BN uniformly dispersed in water prior to injection into the base of the rapidly rotating tube. The resulting composite material, containing 5.75% weight of iron, exhibited high phosphate ion adsorption capacity, up to 171.2 mg PO43− per gram Fe, which was preserved on recycling the material five times.
This journal is © The Royal Society of Chemistry 2018 Open Access Article. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Hexagonal boron nitride (h-BN), superparamagnetic magnetite nanoparticles
Mohammed Al-antaki, A. H., Luo, X., Duan, A., Lamb, R. N., Eroglu, E., Hutchison, W., … Raston, C. L. (2018). Continuous flow synthesis of phosphate binding h-BN@magnetite hybrid material. RSC Advances, 8(71), 40829–40835.