title: Selectively reduction of tobacco specific nitrosamines in cigarette smoke by use of nanostructural titanates.
abstract: In this study, titanate nanosheets, nanotubes, and nanowires, were synthesized by hydrothermal treatment anatase TiO2 in different temperatures. The obtained products are characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron micrograph (TEM) and Brunauer-Emmett-Teller (BET) nitrogen sorption-desorption measurement. Then, the nanostructural titanates were used as additives for selectively reducing tobacco-specific nitrosamines (TNSAs) in mainstream cigarette smoke (CS) for the first time. These nanomaterials exhibited high reduction ability of TSNAs which was related to their intrinsic properties. The N-NO functional group of TSNAs with a negative charge would react with H(+) on the surface of nanomaterials via chemical absorption and can be retained on the surface of the titanates. Among these materials, titanate nanowires (TNW) captured more TNSAs owing to their network structure, which resulted in the selective reduction ratio of TSNAs being improved significantly. Thus, TNW is a useful additive for selectively reducing the TSNAs in CS without changing the cigarette flavor.
authors.affiliation: Technical Centre of Fujian Tobacco Industrial Corporation, Xiamen, Fujian 361022, China.
authors.forename: Qixin
authors.initials: Q
authors.lastname: Deng
authors.forename: Chaozhang
authors.initials: C
authors.lastname: Huang
authors.forename: Jianping
authors.initials: J
authors.lastname: Zhang
authors.forename: Wei
authors.initials: W
authors.lastname: Xie
authors.forename: Hanchun
authors.initials: H
authors.lastname: Xu
authors.forename: Mingdeng
authors.initials: M
authors.lastname: Wei
mesh_terms: D049329:Nanostructures / Q000737:chemistry*; D043942:Nanotubes / Q000737:chemistry; D053770:Nanowires / Q000737:chemistry; D009602:Nitrosamines / Q000737:chemistry*; D010084:Oxidation-Reduction; D012907:Smoking; D013696:Temperature; D014025:Titanium / Q000737:chemistry*
chemical_list: D009602:Nitrosamines; C009495:titanium dioxide; D014025:Titanium