Preparation and Microstructure of Titanate Nanotube Thin Films by Spray Layer-by-Layer Assembly Method

DOI Web Site
  • Suzuki Yoshikazu
    Institute of Advanced Energy, Kyoto University Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS) Ecole Européenne de Chimie, Polymères et Matériaux de Strasbourg (ECPM), Université Louis Pasteur
  • Pichon Benoît P.
    Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS) Ecole Européenne de Chimie, Polymères et Matériaux de Strasbourg (ECPM), Université Louis Pasteur
  • Grandcolas Mathieu
    Laboratoire des Matériaux, Surfaces et Procédés pour la Catalyse (LMSPC)
  • Keller Nicolas
    Laboratoire des Matériaux, Surfaces et Procédés pour la Catalyse (LMSPC)
  • Keller-Spitzer Valérie
    Laboratoire des Matériaux, Surfaces et Procédés pour la Catalyse (LMSPC)
  • Yoshikawa Susumu
    Institute of Advanced Energy, Kyoto University

書誌事項

タイトル別名
  • 1. Agglomerate Problem of Titanate Nanotubes for Thin-Film Processing

抄録

Titanate nanotubes prepared by a hydrothermal process in an alkali solution are promising for environmental and energy applications. A serious (but not-widely-recognized) problem of titanate nanotubes for potential device applications is their strong agglomeration (or even aggregation), which disturb thin-film processing in nanometer order thickness. The objective of this study is to demonstrate how the agglomerates/aggregates behave in an actual wet thin-film process, i.e., spray Layer-by-Layer (spray LbL) coating process. Under acidic (pH=2) and stirred conditions, apparently-dispersed titanate nanotube suspension actually contained plenty of micrometer-sized agglomerates/aggregates. The formation of the large agglomerates/aggregates disturbs the spray LbL process, suggesting an alternative dispersion method is necessary for wet processes of titanate nanotubes.

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