具有增强光催化活性用于降解甲基橙的中空TiO-SiO微球的微生物模板纳米结构
Microorganism-Templated Nanoarchitectonics of Hollow TiO-SiO Microspheres with Enhanced Photocatalytic Activity for Degradation of Methyl Orange.
作者信息
Liao Shenglan, Lin Liqin, Huang Jiale, Jing Xiaolian, Chen Shiping, Li Qingbiao
机构信息
Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
Department of Chemical Engineering and Pharmacy, College of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou 362000, China.
出版信息
Nanomaterials (Basel). 2022 May 9;12(9):1606. doi: 10.3390/nano12091606.
In this study, hollow SiO microspheres were synthesized by the hydrolysis of tetraethyl orthosilicate (TEOS) according to the Stober process, in which GS 115 cells were served as biological templates. The influence of the preprocessing method, the TEOS concentration, the ratio of water to ethanol, and the aging time on the morphology of microspheres was investigated and the optimal conditions were identified. Based on this, TiO-SiO microspheres were prepared by the hydrothermal process. The structures and physicochemical properties of TiO-SiO photocatalysts were systematically characterized and discussed. The photocatalytic activity for the degradation of methyl orange (MO) at room temperature under Xe arc lamp acting as simulated sunlight was explored. The result showed that the as-prepared TiO-SiO microspheres exhibited a good photocatalytic performance.
在本研究中，根据施托伯法通过正硅酸四乙酯（TEOS）水解合成空心SiO微球，其中GS 115细胞用作生物模板。研究了预处理方法、TEOS浓度、水与乙醇的比例以及老化时间对微球形态的影响，并确定了最佳条件。在此基础上，通过水热法制备了TiO-SiO微球。对TiO-SiO光催化剂的结构和理化性质进行了系统表征和讨论。探索了在模拟太阳光的氙弧灯下室温下降解甲基橙（MO）的光催化活性。结果表明，所制备的TiO-SiO微球表现出良好的光催化性能。
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