Tailored fabrication of transferable and hollow weblike titanium dioxide structures

Arto Hiltunen, Kimmo Lahtonen, Jesse Saari, Anniina Ojanperä, Essi Sarlin, Wondraczek Holger, Alexander Efimov, Kimmo Kaunisto, Paola Vivo, Chiara Maccato, Davide Barreca, Pedro Fardim, Nikolai Tkachenko, Mika Valden, Helge Lemmetyinen

    Research output: Contribution to journalArticleScientificpeer-review

    3 Citations (Scopus)

    Abstract

    The preparation of weblike titanium dioxide thin films by atomic layer deposition on cellulose biotemplates is reported. The method produces a TiO2 web, which is flexible and transferable from the deposition substrate to that of the end application. Removal of the cellulose template by calcination converts the amorphous titania to crystalline anatase and gives the structure a hollow morphology. The TiO2 webs are thoroughly characterized using electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy to give new insight into manufacturing of porous titanium dioxide structures by means of template-based methods. Functionality and integrity of the TiO2 hollow weblike thin films were successfully confirmed by applying them as electrodes in dye-sensitized solar cells.
    Original languageUndefined/Unknown
    Pages (from-to)64–71
    JournalChemPhysChem
    Volume18
    Issue number1
    DOIs
    Publication statusPublished - 2017
    MoE publication typeA1 Journal article-refereed

    Keywords

    • photochemistry
    • Surface analysis
    • templated synthesis
    • thin films
    • titanium

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