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          Institute: Fritz-Haber-Institut     Collection: Inorganic Chemistry     Display Documents

ID: 403422.0, Fritz-Haber-Institut / Inorganic Chemistry
Synthesis of TiO2 Thin Films: Relationship Between Preparation Conditions and Nanostructure
Authors:Ampelli, C.; Passalacqua, Rosalba; Perathoner, Siglinda; Centi, Gabriele; Su, Dang Sheng; Weinberg, Gisela
Research Context:Bridging material gap in catalysis
Date of Publication (YYYY-MM-DD):2008
Title of Journal:Topics in Catalysis
Journal Abbrev.:Top. Catal.
Issue / Number:1-4
Start Page:133
End Page:144
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:The influence of the synthesis conditions (pH, HF concentration, procedure of application of the voltage) during the anodization of Ti foils to produce TiO2 thin films characterized by an ordered arrays of 1D nanostructures (nanorods, nanotubes) is discussed. Different types of 1D nanostructures could be obtained by changing the procedure of synthesis, as shown by field emission scanning electron microscopy images. The analysis of the current versus time curves during the procedure of synthesis provides indications on the sequence of processes occurring during the synthesis. It is also suggested that different growing mechanisms occur depending on the preparation, leading in turn to the different type of nanostructures observed. The relevance of this preparation method is related to the analysis of the relationship for oxide materials between nano-architecture and reactivity and gives the opportunity to prepare materials with an intermediate degree of complexity between model and applied catalysts.
Free Keywords:Titania; Anodization; Nanotubes; Nanorods; Nanostructured thin film
External Publication Status:published
Document Type:Article
Communicated by:Robert Schlögl
Affiliations:Fritz-Haber-Institut/Inorganic Chemistry/Micro- and Nanostructure / Carbon
External Affiliations:Department of Industrial Chemistry and Engineering of Materials and ELCASS, University of Messina and INSTM UdR Messina, Salita Sperone 31, 98166 Messina, Italy
Identifiers:URL:http://dx.doi.org/10.1007/s11244-008-9113-0 [Open Access]
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