Facile synthesis of hierarchical anatase microspheres

JOURNAL OF ALLOYS AND COMPOUNDS

卷:551

Article

Jardiel, Teresa¹  Calatayud, David G.¹  Rodriguez, Monica¹  Peiteado, Marco²  Fernandez-Hevia, Daniel^3,4  Caballero, Amador C.¹ 

[1] Inst Ceram & Vidrio CSIC, Dept Electroceram, Madrid 28049, Spain

[2] ETSI Telecomunicac UPM, Dept Appl Phys, Madrid 28040, Spain

[3] Univ Las Palmas Gran Canaria, Dept Chem, E-35017 Gran Canaria, Spain

[4] INAEL Elect Syst, Toledo 45007, Spain

关键词: Mesoporous materials;    Anatase;    Chemical synthesis;    Nanostructured materials;    Precipitation;    Catalysis;   

DOI  :  10.1016/j.jallcom.2012.10.174

来源: Elsevier

【 摘 要 】

A versatile synthesis method is proposed to fabricate hierarchical anatase microspheres under soft conditions and rendering batch volumes significantly large for practical scale-up preparation. The strategy is based on the use of non-aqueous conditions to prevent the accelerated hydrolysis of the Titanium precursor. Water traces from the air atmosphere are only incorporated during the vaporization stage, allowing a controlled precipitation process. Diluted precursor solutions and ethanolic medium promote the self-organization of the precipitated nanoparticles into stable units of spherical shape. The calcination of the obtained powder finally leads to a homogenous, monodisperse and easy to handle population of nanostructured anatase microspheres with high crystallinity and large surface area. (C) 2012 Elsevier B.V. All rights reserved.

【 授权许可】

Free