How Do Ionic Liquids Affect the Surface Structure of Titania Photocatalyst? An Electron-Trap Distribution-Analysis Study
How Do Ionic Liquids Affect the Surface Structure of Titania Photocatalyst? An Electron-Trap Distribution-Analysis Study
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DOI：
10.1021/acs.jpcc.1c09174
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发表时间：
2021-12
期刊：
影响因子：
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通讯作者：
J. Łuczak;Anna Pancielejko;Guangyi Chen;Mai Takashima;A. Zaleska-Medynska;B. Ohtani
中科院分区：
文献类型：
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作者：
J. Łuczak;Anna Pancielejko;Guangyi Chen;Mai Takashima;A. Zaleska-Medynska;B. Ohtani
以钛醇盐为原料，在几种离子液体的存在下，制备了氧化钛、二氧化钛、光催化剂颗粒，研究表明，在波长>400 nm的光照射下，一组样品对苯酚的光催化降解活性高于另一组样品。虽然传统的结构分析结果不能与活性相关，但通过反向双光束光声光谱测量的电子陷阱分布表明，部分离子液体诱导产生了表面覆盖有疏水有机残基的非晶层，以增强苯酚在表面上的吸附。
Titanium(IV) oxide, titania, photocatalyst particles were prepared from titanium alkoxide in the presence of several kinds of ionic liquids, and it was clarified that a group of samples exhibited photocatalytic activity for phenol degradation under the irradiation of light of wavelength >400 nm higher than those of the other group of samples. Although the conventional structural analytical results could not be related to the activity, electron-trap distribution measured by reversed double-beam photoacoustic spectroscopy suggested that a part of the ionic liquid induced the creation of a surface amorphous layer covered with hydrophobic organic residues to enhance the adsorption of phenol on the surface.