Print Email Facebook Twitter Oriented Attachment and Nanorod Formation in Atomic Layer Deposition of TiO2 on Graphene Nanoplatelets Title Oriented Attachment and Nanorod Formation in Atomic Layer Deposition of TiO2 on Graphene Nanoplatelets Author Grillo, F. (TU Delft ChemE/Product and Process Engineering) La Zara, D. (TU Delft ChemE/Product and Process Engineering) Mulder, P.C.M. (TU Delft Applied Sciences) Kreutzer, M.T. (TU Delft ChemE/Chemical Engineering) Ruud Van Ommen, J. Faculty Applied Sciences Department ChemE/Chemical Engineering Date 2018 Abstract Understanding the spontaneous organization of atoms on well-defined surfaces promises to enable control over the shape and size of supported nanostructures. Atomic layer deposition (ALD) boasts atomic-scale control in the synthesis of thin films and nanoparticles. Yet, the possibility to control the shape of ALD-grown nanostructures remains mostly unexplored. Here, we report on the bottom-up formation of both linear and V-shaped anatase TiO2 nanorods (NRs) on graphene nanoplatelets during TiCl4/H2O ALD carried out at 300 °C. NRs as large as 200 nm form after only five ALD cycles, indicating that diffusional processes rather than layer-by-layer growth are behind the NR formation. In particular, high-resolution transmission electron microscopy reveals that the TiO2 NRs and graphene nanoplatelets are in rotational alignment as a result of lattice matching. Crucially, we also show that individual nanocrystals can undergo in-plane oriented attachment. To reference this document use: http://resolver.tudelft.nl/uuid:ba917eb8-0d71-4c16-ac44-b6da67e47692 DOI https://doi.org/10.1021/acs.jpcc.8b05572 ISSN 1932-7447 Source The Journal of Physical Chemistry C, 122 (34), 19981-19991 Part of collection Institutional Repository Document type journal article Rights © 2018 F. Grillo, D. La Zara, P.C.M. Mulder, M.T. Kreutzer, J. Ruud Van Ommen Files PDF acs.jpcc.8b05572.pdf 11.44 MB Close viewer /islandora/object/uuid:ba917eb8-0d71-4c16-ac44-b6da67e47692/datastream/OBJ/view