Controlled pore structure modification of diatoms by atomic layer deposition of TiO2

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dc.contributor.authorLosic, Den_AU
dc.contributor.authorTriani, Gen_AU
dc.contributor.authorEvans, PJen_AU
dc.contributor.authorAtanacio, AJen_AU
dc.contributor.authorMitchell, JGen_AU
dc.contributor.authorVoelcker, NHen_AU
dc.date.accessioned2020-08-31T23:26:13Zen_AU
dc.date.available2020-08-31T23:26:13Zen_AU
dc.date.issued2006-09-04en_AU
dc.date.statistics2020-07-28en_AU
dc.description.abstractDiatoms produce diverse three-dimensional, regular silica structures with nanometer to micrometer dimensions and hold considerable promise for biological or biomimetic fabrication of nanostructured materials and devices. The unique hierarchical porous structure of diatom frustules is in particular attractive for membrane applications in microfluidic systems. In this paper, a procedure for pore size modifications of two centric diatom species, Coscinodiscus sp. and Thalassiosira eccentrica (T. eccentrica) using the atomic layer deposition (ALD) of ultrathin films of titanium oxide (TiO2) is described. TiO2 is deposited by sequential exposures to titanium chloride (TiCl4) and water. The modified diatom membranes were characterized using scanning electron microscopy (SEM), atomic force microscopy (AFM), energy dispersive X-ray analysis (EDAX), and secondary ion mass spectrometry (SIMS). These techniques confirmed the controlled reduction of pore sizes while preserving the shape of the diatom membrane pores. Pore diameters of diatom membranes can be further tailored for specific applications by varying the number of cycles and by changing their surface functionality.© The Royal Society of Chemistry 2006en_AU
dc.identifier.citationLosic, D., Triani, G., Evans, P. J., Atanacio, A., Mitchell, J. G., & Voelcker, N. H. (2006). Controlled pore structure modification of diatoms by atomic layer deposition of TiO 2. Journal of Materials Chemistry, 16(41), 4029-4034. doi:10.1039/B610188Gen_AU
dc.identifier.govdoc9784en_AU
dc.identifier.issn0959-9428en_AU
dc.identifier.issue41en_AU
dc.identifier.journaltitleJournal of Materials Chemistryen_AU
dc.identifier.pagination4029-4034en_Au
dc.identifier.urihttps://doi.org/10.1039/B610188Gen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9736en_AU
dc.identifier.volume16en_AU
dc.language.isoenen_AU
dc.publisherRoyal Society of Chemistryen_AU
dc.subjectDiatomsen_AU
dc.subjectSilicaen_AU
dc.subjectPhotosynthesisen_AU
dc.subjectNanostructuresen_AU
dc.subjectTitanium oxidesen_AU
dc.subjectTitanium chloridesen_AU
dc.subjectScanning electron microscopyen_AU
dc.subjectAtomic force microscopyen_AU
dc.subjectSpectroscopyen_AU
dc.titleControlled pore structure modification of diatoms by atomic layer deposition of TiO2en_AU
dc.typeJournal Articleen_AU
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