Highly photocatalytic activity of brookite/rutile TiO2 nanocrystals with semi-embedded structure
Highly photocatalytic activity of brookite/rutile TiO2 nanocrystals with semi-embedded structure
复制标题
半嵌入结构板钛矿/金红石TiO2纳米晶的高光催化活性
DOI：
10.1016/j.apcatb.2015.07.003
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发表时间：
2016-01-01
影响因子：
22.1
通讯作者：
Zhu, Jian
中科院分区：
文献类型：
--
作者：
Cao, Yanfeng;Li, Xiaoting;Zhu, Jian
A facile solvothermal approach was used to prepare brookite-type TiO2 nanocrystals with different phase content and structure, accomplished by adjusting the ratio of TiCl (4) to t-BuOH. The obtained biphasic brookite/rutile TiO2 nanocrystals showed a high brookite weight content (72%). The photocatalytic degradation of phenol under UV-irradiation was used to determine the synergetic effect from the combination of different phases (e.g., brookite, anatase, and rutile). The biphasic NST-4 composed of brookite and rutile exhibited the highest degradation rates, with rate constants three times higher than commercial Degussa P-25. Detailed analysis found that, besides phase composition and content, the semi-embedded structure was essential to obtain a superior activity of biphasic TiO2 samples. (C) 2015 Elsevier B.V. All rights reserved.
