23August2019

Nano-Micro Letters

Synthesis and photocatalytic activity of Fe-doped TiO2 supported on hollow glass microbeads

Wenyan Zhao1, Wuyou Fu1, Haibin Yang1,*, Chuanjin Tian2, Minghui li1, Juan Ding1, Wei Zhang1, Xiaoming Zhou1, Hui Zhao1, Yixing Li1

Abstract
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Nano-Micro Letters, , Volume 3, Issue 1, pp 34-42
Publication Date (Web): April 7, 2011 (Article)
DOI:10.3786/nml.v3i1.p20-24

 

Abstract

 


Figure 1 The scheme of the procedure used to synthesize Fe-TiO2/beads composites.

In this paper, Fe-doped TiO2 photocatalyst supported on hollow glass microbeads (Fe-TiO2/beads) is prepared bydip-coating method, which uses hollow glass microbeads as the carriers and tetrabutylorthotitanate [Ti(OC4H9)4] as the raw material. The phase structure, ingredient, morphologies, particle size and shell thickness of the productsare characterized by X-ray powder diffraction (XRD), energy-dispersive spectroscopy (EDS) and field emission scanning electron microscope (FESEM). The feasibility of photocatylic degradation of Rhodamine B (RhB)under illumination of UV-vis lightis studied. The results showthat the core-shell structure catalyst is composited of Fe-doped anatase TiO2 andhollow glass microbeads, and the catalytic activity of the TiO2 is markedly enhanced by doping Fe ion. The optimum concentration of Fe ion is 0.1% (molecular fraction) in the precursor and the photocatalytic activity can be increased to 98% compared with that of the undoped one. The presence of ferrum elementsneither influences the transformation of anatase to rutile, nor creates new crystalphases. The possible mechanism of photocatalytic oxidation is also discussed.


 

Keywords

TiO2; Sol-gel method; Semiconductor; Photocatalytic activity; Hollow glass microbeads

 

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