Synthesis and characterization of TiO2/ZrO2 coaxial core–shell composite nanotubes for photocatalytic applications
Source abstract
Abstract
Abstract In this paper, TiO 2 /ZrO 2 coaxial core–shell composite nanotubes were synthesized with the anodic aluminum oxide (AAO) template by a new “two-step method”: Zr(NO 3 ) 4 sol was first deposited on the nanochannels of the AAO template to form a layer of ZrO 2 nanotubes, and the TiO 2 /ZrO 2 composite nanotubes were obtained after TiF 4 sol was covered on the ZrO 2 precursor. The process was suitable to produce large size and well-ordered nanotube arrays. The photocatalytic activities of the samples in AAO template were evaluated by the degradation of a model dye, methyl orange (MO). Compared with TiO 2 nanotubes and ZrO 2 nanotubes, the TiO 2 /ZrO 2 composite nanotubes exhibited the better photocatalytic activity. Findings from this study suggested that TiO 2 nanotube arrays with enhanced photocatalytic activity could be obtained, which opened a new pathway to construct nanostructured TiO 2 -based composite materials for photocatalytic applications.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Anodic Oxide Films and Nanostructures
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