微球
介孔材料
微晶
锐钛矿
材料科学
光催化
化学工程
纳米材料
纳米技术
金红石
热液循环
催化作用
化学
工程类
冶金
有机化学
作者
Kun Lan,Ruicong Wang,Wei Zhang,Zaiwang Zhao,Ahmed A. Elzatahry,Xingmiao Zhang,Yao Liu,D. M. Al-Dhayan,Yongyao Xia,Dongyuan Zhao
出处
期刊:Chem
[Elsevier]
日期:2018-10-01
卷期号:4 (10): 2436-2450
被引量:81
标识
DOI:10.1016/j.chempr.2018.08.008
摘要
Mesoporous TiO2 nanomaterials have been investigated for decades; however, most endeavors have been focused on the exploration of their potentials in various applications, and the fundamental research for preparing mesoporous TiO2 in a highly controllable manner remains unfruitful. Herein, we report a facile pressure-driven oriented assembly approach to synthesize an unprecedented type of dehiscent mesoporous TiO2 microspheres with radial mesopore channels and oriented rutile crystallites. By varying the concentrated HCl amount, we have been able to produce TiO2 microspheres with well-controlled rutile/anatase phase ratio. By further manipulating the reaction conditions including solvent evaporation time and hydrothermal temperature, the oriented growth with tunable crevices can also be well manipulated. Such dehiscent mesoporous TiO2 microspheres have exhibited great permeability and excellent photocatalytic properties for H2 generation. We believe that the high structural complexity and predictability of this method offers great opportunities in enhancing the performance of TiO2-based materials.
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