Cargando…

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

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)...

Descripción completa

Detalles Bibliográficos
Autores principales: Mohammed Al-antaki, Ahmed Hussein, Luo, Xuan, Duan, Alex, Lamb, Robert N., Eroglu, Ela, Hutchison, Wayne, Zou, Yi-Chao, Zou, Jin, Raston, Colin L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9091421/
https://www.ncbi.nlm.nih.gov/pubmed/35557913
http://dx.doi.org/10.1039/c8ra08336c
Descripción
Sumario: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 PO(4)(3−) per gram Fe, which was preserved on recycling the material five times.