Effect of the nano-fluorapatite ceramic particles on mechanical behavior of fluoride varnishes

Selective removal of dolomite from rare earth element‐bearing phosphorite by flotation and leaching and the adsorption mechanism of agents on mineral surfaces

“…In Fap, the (PO 4 ) 3− was no longer isolated, but under the influence of the surrounding structural environment, the tetrahedron was distorted and the symmetry decreased from Td to Cs, which resulted in the disappearance of the triple degeneracy of the ν3 and the ν4. The ν3 split into two strong bands at 1045 cm −1 and 1,095 cm −1 and an indistinguishable shoulder at 1075 cm −1 , while the ν4 split into two sharp strong bands at 603 cm −1 and 574 cm −1 and a weak shoulder at 566 cm −1 , and caused the sharp absorption of the ν1 (symmetric stretching vibration) at 960 cm −1 to become infrared activity 44–46 . In Dolo, ν3, ν4, and ν2 (out‐of‐plane bending vibration) appeared at 1450 cm −1 , 729 cm −1 , and 880 cm −1 , respectively 47 …”

A coating machine for coating filaments with bioactive nanomaterials for extrusion 3D printing

“…In an in vitro study, rod-shaped nano-fluorapatite particles were antibacterially effective against Fusobacterium nucleatum and Streptococcus mutans with high cytocompatibility [ 27 ]. If fluorapatite is used as an active ingredient in a protective varnish, this leads to an increase in fluoride concentration and micro hardness [ 28 ].…”