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首页> 外国专利> METHOD FOR OBTAINING PHOTOCATALYTIC TITANIUM DIOXIDE OF ANATASE AND BROOKITE MODIFICATION ON THE SURFACE OF A CERAMIC PRODUCT OF RUTILE OBTAINED BY OXIDATIVE DESIGN

METHOD FOR OBTAINING PHOTOCATALYTIC TITANIUM DIOXIDE OF ANATASE AND BROOKITE MODIFICATION ON THE SURFACE OF A CERAMIC PRODUCT OF RUTILE OBTAINED BY OXIDATIVE DESIGN

机译：氧化设计获得的金红石型陶瓷产品表面上的锐钛矿型光催化氧化二氧化钛修饰方法。

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FIELD: water and air purification technology.;SUBSTANCE: invention can be used in obtaining photocatalysts of various forms based on titanium dioxide for photocatalytic purification of water and air from organic compounds. Method of obtaining photocatalytic titanium dioxide TiO2 is based on the surface modification of the rutile phase, obtained by the method of oxidative design. In the course of two consecutive hydrothermal syntheses, the upper layer of compact rutile ceramics was converted into needle-like crystals of sodium titanate phase by hydrothermal treatment in a strongly alkaline medium (15 M NaOH) at 200 °C for 48 h, with the subsequent transition of the protonated form of sodium titanate into nanotubes of the anatase and brookite phase by hydrothermal treatment in a weakly acidic medium (0.05 M HNO3) at 120 °C for 48 h. By the BET method, it was established that the specific surface area of anatase and brookite nanostructures grown on the surface of rutile ceramics was Ss=50 m2/g, which is much more than the specific surface of the original rutile ceramics (1–3 m2/g). Photocatalytic phases of anatase and brookite, built up on the surface of rutile ceramics, have significant photocatalytic activity in the photocatalytic decomposition of ozone, which characterizes such ceramic products as a promising material for photocatalytic applications.;EFFECT: method is proposed for obtaining photocatalytic titanium dioxide of anatase and brookite modification on the surface of a rutile ceramic product obtained by oxidative design.;1 cl, 9 dwg, 1 ex
机译：领域：本发明可用于获得基于二氧化钛的各种形式的光催化剂，用于从有机化合物中光催化纯化水和空气。获得光催化性二氧化钛TiO 2 的方法是基于通过氧化设计方法获得的金红石相的表面改性。在两次连续的水热合成过程中，通过在强碱性介质（15M NaOH）中于200°C进行48h的水热处理，将致密的金红石型陶瓷的上层转变为钛酸钠相的针状晶体。随后在弱酸性介质（0.05M HNO 3 ）中于120°C进行水热处理48 h，将质子化钛酸钠的质子化形式转变为锐钛矿相和板钛矿相的纳米管。通过BET法确定在金红石陶瓷表面生长的锐钛矿和板钛矿纳米结构的比表面积为S s = 50m 2 / g，比原始金红石陶瓷的比表面大得多（1–3 m 2 / g）。在金红石陶瓷表面上建立的锐钛矿和板钛矿的光催化相在臭氧的光催化分解中具有显着的光催化活性，这表征了这种陶瓷产品是光催化应用的有前途的材料。通过氧化设计获得的金红石型陶瓷产品表面的锐钛矿型二氧化钛和板钛矿型改性。; 1 cl，9 dwg，1 ex

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