The Preparation of Additive Material and its Application in the Cigarette of Tobacco

Abstract

This invention describes the preparation of additive material and its application in the cigarette of tobacco. This material is titanate nanotube and was synthesized by using a hydrothermal route. Titanate nanotube can be used as additive material in the cigarette of tobacco and the harmful compounds in the mainstream cigarette smoke can be removed significantly.

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         6 . A additive material in the cigarette of tobacco, wherein titanate nanotube as a additive material, 5-50 mg of titanate nanotube powder was added to the cigarette of tobacco. The titanate nanotubes were prepared by using a hydrothermal route. For a typical route, anatase TiO 2  powder (0.5˜100 g) and an aqueous solution of NaOH (5˜15 M, 10˜1000 mL) were mixed and then transferred into a Teflon container, which was kept in a Teflon-lined autoclave in an oven at 373˜423K for 1˜3 days. The white suspension was washed with 0.1 M HCl solution and deionized water several times until pH values were 1˜7, and then dried at 323˜373K for 1˜40 h.