Facile one-pot synthesis of surface-fluorinated TiO2 hollow spheres with enhanced photocatalytic activity

被引：5

作者：

Lee, Duk-Hee ^{[1
]}

Park, Kyung-Soo ^{[1
]}

Lee, Chan-Gi ^{[1
]}

Swain, Basudev ^{[1
]}

机构：

[1] Inst Adv Engn IAE, Mat Sci & Chem Engn Ctr, Yongin 17180, South Korea

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2020年 / 400卷

关键词：

Nano hollow sphere; Surface-fluorinated nano; F-doped TiO2; Photocatalysis; TEMPLATE-FREE FABRICATION; FREE ROUTE; NANOSTRUCTURES; RECONSTRUCTION; MICROSPHERES;

D O I：

10.1016/j.jphotochem.2020.112654

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Surface-fluorinated TiO2 hollow spheres were synthesized in a one-pot synthesis from dissolved ammonium hexafluorotitanate and boric acid without any surfactants or templates. The effect of reaction time on the morphology and structure of the synthesized sub-micro spheres was investigated and characterized by field emission scanning electron microscopy, high-resolution transmission electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. Also, the detailed growth formation mechanism of hollow spheres via self-transformation and outward Ostwald ripening processes is discussed. The photocatalytic activity of the prepared samples was analyzed under ultraviolet light, based on the photocatalytic decomposition of rhodamine B aqueous solution at room temperature. A significant improvement in photocatalytic efficiency of the synthesized TiO2 hollow powder was observed, which was due to the combined effects of its high surface area, high crystallinity, and surface fluorination.

引用

页数：8

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