Journal
ACTA MATERIALIA
Volume 93, Issue -, Pages 138-143Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2015.03.059
Keywords
Nanostructured materials; Oxide; Photocatalysis; Sol-gel
Funding
- National Natural Science Foundation of China [51172158]
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Mesoporous nanotubes represent a unique class of nanostructures with numerous applications including biomaterials, lithium ion battery anodes, and photocatalysts. Herein we describe for the first time a general, scalable, and reproducible approach for the production of 3D interconnected mesoporous TiO2 nanotubes with ultrahigh specific surface area and large pore volume by using a nanofibrous template of bacterial cellulose (BC). The obtained samples were characterized by Brunauer Emmett Teller (BET) surface area measurement, X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The results demonstrated that TiO2 nanotubes sustained the 3D interconnected structure of pristine BC and exhibited an average diameter of 36 nm and a mesoporous wall with a mean mesopore size of 3.2 nm. The particular structure endows TiO2 nanotubes with ultra-large surface area (1629 m(2) g(-1)) and high photocatalytic activity. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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