Template-assisted generation of three-dimensionally branched titaniananotubes on a substrate

Literature Information

Publication Date 2011-10-26
DOI 10.1039/C1CE06064C
Impact Factor 3.545
Authors

Kevin R. Moonoosawmy, Martha Es-Souni, Robert Minch, Matthias Dietze, Mohammed Es-Souni


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Abstract

Due to their high aspect ratio titania nanotubes have more surface area that enhances their ability towards harnessing light. Herein, we report on a template-assisted method to synthesize branched titania nanotubes anchored on a substrate. The branched structure consists of units of six or more tubes connected at their base; each tube has a dimension of approximately 6 μm long, 600 nm wide and 65 nm thick wall. Our approach takes advantage of hydrothermally processed branched ZnO nanorod (NR) arrays that act as sacrificial templates. After chemical dissolution of the ZnO film that inherently forms during ZnO–NR processing, the titania overlayer is coated atop of the template and annealed at 350 °C to produce the anatase nanostructure. Removal of the template under mild acidic conditions reveals the anatase tubes. The processes employed are well suited for large-scale application. The highly textured surface of the nanotubes also exhibits low reflectivity when compared to its thin film counterpart.

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Source Journal

CrystEngComm

CrystEngComm
CiteScore: 5.5
Self-citation Rate: 7.7%
Articles per Year: 643

CrystEngComm is the forum for the design and understanding of crystalline materials. We welcome studies on the investigation of molecular behaviour within crystals, control of nucleation and crystal growth, engineering of crystal structures, and construction of crystalline materials with tuneable properties and functions. We publish hypothesis-driven research into… how crystal design affects thermodynamics, phase transitional behaviours, polymorphism, morphology control, solid state reactivity (crystal-crystal solution-crystal, and gas-crystal reactions), optoelectronics, ferroelectric materials, non-linear optics, molecular and bulk magnetism, conductivity and quantum computing, catalysis, absorption and desorption, and mechanical properties. Using Techniques and methods including… Single crystal and powder X-ray, electron, and neutron diffraction, solid-state spectroscopy, spectrometry, and microscopy, modelling and data mining, and empirical, semi-empirical and ab-initio theoretical evaluations. On crystalline and solid-state materials. We particularly welcome work on MOFs, coordination polymers, nanocrystals, host-guest and multi-component molecular materials. We also accept work on peptides and liquid crystals. All papers should involve the use or development of a design or optimisation strategy. Routine structural reports or crystal morphology descriptions, even when combined with an analysis of properties or potential applications, are generally considered to be outside the scope of the journal and are unlikely to be accepted.

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