DataVXChemistry of MaterialsPaper
journal article·2019-03-26

Self-Assembly Route to TiO2 and TiC with a Liquid Crystalline Order

Thanh-Dinh Nguyen, Erlantz Lizundia, Markus Niederberger, Wadood Y. Hamad, Mark J. MacLachlan

Chemistry of Materials· Volume 31· Issue 6
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Source abstract

Abstract

We report the liquid crystalline self-assembly of cellulose nanocrystals (CNCs) with peroxotitanate to replicate large freestanding mesoporous films of TiO2 and chiral nematic TiC structures. The compatibility of cellulose liquid crystals with water-soluble peroxotitanate enabled them to self-assemble into flexible chiral nematic TiO2/cellulose composite films. The highly compatible peroxotitanate/CNC mixture is a new liquid crystalline system to investigate the development of photonic films with tunable optical properties and structural replication by varying the ratio of constituents. Iridescent peroxotitanate/CNC composites were heated under hydrothermal conditions and calcined to generate layered mesoporous anatase TiO2 replicas that are robust, semitransparent films. Through magnesiothermic reduction, we transformed carbonized peroxotitanate/CNC assemblies to mesoporous TiC with a chiral nematic order. Our work shows the potential of the mesoporous TiC to function as a long-life cycle rechargeable lithium-ion battery anode material and may extend this route to other peroxometallate compounds.
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Research context

Energy storageNanomaterialsComposites

OpenAlex topics: Advanced Cellulose Research Studies · TiO2 Photocatalysis and Solar Cells · Copper-based nanomaterials and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada

Department of Graphic Design and Engineering Projects, University of the Basque Country (UPV/EHU), Bilbao 48103, Spain

BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain

Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland

FPInnovations, 2665 East Mall, Vancouver, British Columbia V6T 1Z4, Canada

WPI Nano Life Science Institute, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan

Stewart Blusson Quantum Matter Institute, University of British Columbia, 2355 East Mall, Vancouver, British Columbia V6T 1Z4, Canada

Funding

Natural Sciences and Engineering Research Council of Canada · Eidgen?ssische Technische Hochschule Z?rich

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