Photocatalytic nanofibers and nanotubes made by atomic layer deposition.

Markku Leskelä, Marianna Kemell, Viljami Pore, Eero Santala, Mikko Ritala

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

    Abstract

    Because of the self-limiting growth principle At. Layer Deposition (ALD) suits very well for depositing thin films on nonplanar surfaces. Neither the size of the substrates nor the size of the structural features has any clear threshold value in ALD. ALD suits very well for making and modifying of nanomaterials. In this presentation the use of ALD for depositing conformal TiO2 films on nonplanar nanostructured surfaces is exemplified by three ways: deposition of thin films on porous alumina, deposition of films on nanofibers made with a porous alumina template, deposition of thin films on nanofibers either on natural fibers like cellulose or electrospun polymer nanofibers. The oxide nanotubes are obtained by annealing in air the TiO2 coated nanofibers and thereby removing the carbohydrate kernel. Photocatalytic activity of the nanomaterials were studied by decompg. methylene blue. The photocatalytic activity could be enhanced by coating the material with noble metal nanoparticles. Reusable magnetic nanofibers were obtained by coating electrospun iron acetate composite fibers with ALD TiO2. [on SciFinder(R)]
    Original languageEnglish
    Title of host publicationAbstracts of Papers, 233rd ACS National Meeting
    Publication date2007
    PagesINOR-028
    Publication statusPublished - 2007
    MoE publication typeA4 Article in conference proceedings
    EventACS National Meeting - Chicago, United States
    Duration: 25 Mar 200729 Mar 2007
    Conference number: 233

    Fields of Science

    • 116 Chemical sciences

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