title: Preparation of tourmaline nano-particles through a hydrothermal process and its infrared emission properties.
abstract: Tourmaline nano-particles were successfully prepared via a hydrothermal process using HCl as an additive. The reaction temperature (T) and the concentration of HCI (C(HCl)) had effects on the size and morphology of the tourmaline nano-particles. The optimum reaction condition was that: T = 180 degrees C and C(HCl) = 0.1 mol/l. The obtained nano-particles were spherical with the diameter of 48 nm. The far-infrared emissivity of the product was 0.923. The formation mechnism of the tourmaline nano-particles might come from the corrosion of grain boundary between the tourmaline crystals in acidic hydrothermal conditions and then the asymmetric contraction of the crystals.
authors.forename: Gang
authors.initials: G
authors.lastname: Xue
authors.forename: Chao
authors.initials: C
authors.lastname: Han
authors.forename: Jinsheng
authors.initials: J
authors.lastname: Liang
authors.forename: Saifei
authors.initials: S
authors.lastname: Wang
authors.forename: Chaoyue
authors.initials: C
authors.lastname: Zhao