Localized crystallization: a chemical transformation of Nb2O5 rod-like arrays into ordered niobate arrays
- 22 December 2010
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in CrystEngComm
- Vol. 13 (6), 1966-1975
- https://doi.org/10.1039/c0ce00449a
Abstract
A key limitation for various applications of niobium (Nb)-containing thin films is the lack of remarkably economic, simple and versatile methods for effectively generating large-scale ordered arrays. We used well-aligned Nb2O5 rod-like arrays as a sacrificial precursor to demonstrate how a wide range of niobate arrays can be obtained through a localized crystallization process. NaNb3O8 microtube arrays, NaNbO3 microrod arrays, and new-phase K2Nb2O6 microtube arrays were selectively crystallized by dynamically controllable interfacial reactions between alkali solution and solid Nb2O5 template. The current low-temperature hydrothermal synthesis was proved straightforward and technically flexible for the shape- and structure-control of oxide surface architectures. Most importantly, the chemical synthesis of highly ordered Nb-based binary and ternary oxide arrays provided a much deeper understanding of crystallization behaviour during a sacrificial-templating process and also a successful chemical strategy for crystallizing more alkali or alkaline earth metal complex oxide films with great technological importance.Keywords
This publication has 49 references indexed in Scilit:
- Fabrication of Nb2O5nanotrees with controlled branching degreesPhysica Scripta, 2010
- Morphology-tuned growth of ZnO microstructuresMaterials Research Bulletin, 2010
- The Materials Science of Functional Oxide Thin FilmsAdvanced Materials, 2009
- Effect of Surfactants on the Structure and Morphology of Magnesium Borate Hydroxide Nanowhiskers Synthesized by Hydrothermal RouteNanoscale Research Letters, 2009
- Growth of Oriented Single-Crystalline Rutile TiO2 Nanorods on Transparent Conducting Substrates for Dye-Sensitized Solar CellsJournal of the American Chemical Society, 2009
- Tube Formation in Nanoscale MaterialsNanoscale Research Letters, 2008
- Inorganic semiconductor nanostructures and their field-emission applicationsJournal of Materials Chemistry, 2007
- Twinned Zn2TiO4 Spinel Nanowires Using ZnO Nanowires as a TemplateAdvanced Materials, 2007
- Chemical synthesis of stoichiometric lithium niobate powdersMaterials Letters, 2005
- Extremely Short Non‐Bonding Oxygen-Oxygen Distances: The Crystal Structures of NbBO4, NaNb3O8, and NaTa3O8Angewandte Chemie, 1988