Method for obtaining Na0.5Bi0.5TiO3 and Na-Ti-O nanowire in hydrothermal condition by virtue of phase separation method

• Main Authors: LIU LIYING, SUI MANLING, WANG RUZHI, ZHANG HUAZHEN, ZHU MANKANG, HOU YUDONG
• Format: Patent
• Language: English
• Published: 21.10.2015
• Subjects: CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; INORGANIC CHEMISTRY; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; METALLURGY; NANOTECHNOLOGY; PERFORMING OPERATIONS; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TRANSPORTING

A method for obtaining Na0.5Bi0.5TiO3 and a Na-Ti-O nanowire in a hydrothermal condition by virtue of a phase separation method belongs to the technical field of preparation of a novel functional material. According to the method provided by the invention, Na0.5Bi0.5TiO3 and a Na-Ti-O one-dimensional nanostructure are generated simultaneously through concentration control over reaction raw materials; the Na0.5Bi0.5TiO3 and the Na-Ti-O one-dimensional nanostructure are successfully separated by virtue of a phase separation technology for the first time, so that simplification, and structure and performance research on a target product and an intermediate product are facilitated, and substantial development of a hydrothermal technique is promoted. The method disclosed by the invention comprises the steps: fully grinding bismuth nitrate in a mortar into fine powder; weighing titanium dioxide powder according to a stoichiometric relationship that the molar ratio of Bi toTi being 1:2; adding the titanium dioxide powder into a prepared sodium hydroxide solution and carrying out reaction for 60-70 hours at 200-220 DEG C; after reaction, cooling the solution to room temperature at a rate of 10 DEG C/h, wherein reactants are separated as a result of different densities; carrying out centrifugation and washing drying on the reactants to obtain the pure Na-Ti-O nanowire and Na0.5Bi0.5TiO3 nanopowder.