Fast Microwave Synthesis of Gold-Doped TiO2 Assisted by Modified Cyclodextrins for Photocatalytic Degradation of Dye and Hydrogen Production

Catalysts

卷:10

Cécile Machut¹  Anne Ponchel¹  Sébastien Noël¹  Frédéric Wyrwalski¹  Eric Monflier¹  Bastien Léger¹  Nicolas Kania¹  Ahmed Addad² 

[1] University Artois, CNRS, Centrale Lille, Univ. Lille, UMR 8181–UCCS–Unité de Catalyse et Chimie du Solide, F-62300 Lens, France;

[2] University Lille, CNRS, INRA, Centrale Lille, UMR 8207-UMET-Unité Matériaux et Transformations, F-59000 Lille, France;

关键词: photocatalysis;    photodegradation;    nanoparticles;    gold;    TiO₂;    cyclodextrins;   

DOI  :  10.3390/catal10070801

来源: DOAJ

【 摘 要 】

A convenient and fast microwave synthesis of gold-doped titanium dioxide materials was developed with the aid of commercially available and common cyclodextrin derivatives, acting both as reducing and stabilizing agents. Anatase titanium oxide was synthesized from titanium chloride by microwave heating without calcination. Then, the resulting titanium oxide was decorated by gold nanoparticles thanks to a microwave-assisted reduction of HAuCl₄ by cyclodextrin in alkaline conditions. The materials were fully characterized by UV-Vis spectroscopy, X-Ray Diffraction (XRD), Transmission Electron Microscopy (TEM), and N₂ adsorption-desorption measurements, while the metal content was determined by Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The efficiency of the TiO₂@Au materials was evaluated with respect to two different photocatalytic reactions, such as dye degradation and hydrogen evolution from water.

【 授权许可】

Unknown