ao9b02797_si_001.pdf (1.07 MB)
Continuous Mesoporous Aluminum Oxide Film with Perpendicularly Oriented Mesopore Channels
journal contribution
posted on 2019-10-18, 18:38 authored by Yuuta Shibuya, Kazuya Katayama, Kazuhiro Akutsu-Suyama, Akira YamaguchiMesoporous
aluminum oxide (MAO) films with perpendicularly oriented
cylindrical mesopores (pore diameter: ca. 10 nm) were successfully
deposited on a glass substrate by a surfactant-templating approach
using aluminum nitrate as an aluminum source. The perpendicular orientation
of mesopores was confirmed by grazing-incidence small-angle X-ray
scattering and neutron reflection experiments. The thickness of the
MAO film was around 100 nm, with a surface roughness of less than
6 nm. Since the inner surface of MAO pores was positively charged,
negatively charged glucose oxidase molecules could be densely loaded
into the cylindrical mesopores without significant loss of enzymatic
activity. The present MAO film is potentially useful as an inorganic
host material for an enzyme toward the development of a biocatalytic
system.