Controlling anatase coating of diatom frustules by varying the binding layer

Jeremiah Toster; Catalin Harnagea; K Iyer; Federico Rosei; Colin Raston

doi:10.1039/c2ce06648c

Controlling anatase coating of diatom frustules by varying the binding layer

Jeremiah Toster, Catalin Harnagea, K Iyer, Federico Rosei, Colin Raston

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13 Citations (Scopus)

Abstract

Diatoms have ordered three dimensional porous exoskeletons (frustules) comprised primarily of amorphous silica which can be used as templates for materials applications. Hydrolysis of titanium(iv) isopropoxide (TIP) in the presence of surface bound poly(4-vinyl pyridine) or citric acid results in the formation of anatase on the surface after calcining at 450 °C, however as shown with atomic force microscopy (AFM), different morphologies are formed. Citric acid preferentially resulted in a thin film of anatase over the surface of the frustule whereas poly(4-vinyl pyridine) resulted in the formation of nano-particles of anatase (90-100 nm) on the surface.

Original language	English
Pages (from-to)	3446-3450
Number of pages	5
Journal	CrystEngComm
Volume	14
Issue number	10
DOIs	https://doi.org/10.1039/c2ce06648c
Publication status	Published - 21 May 2012

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abstract = "Diatoms have ordered three dimensional porous exoskeletons (frustules) comprised primarily of amorphous silica which can be used as templates for materials applications. Hydrolysis of titanium(iv) isopropoxide (TIP) in the presence of surface bound poly(4-vinyl pyridine) or citric acid results in the formation of anatase on the surface after calcining at 450 °C, however as shown with atomic force microscopy (AFM), different morphologies are formed. Citric acid preferentially resulted in a thin film of anatase over the surface of the frustule whereas poly(4-vinyl pyridine) resulted in the formation of nano-particles of anatase (90-100 nm) on the surface.",

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AU - Toster, Jeremiah

AU - Harnagea, Catalin

AU - Iyer, K

AU - Rosei, Federico

AU - Raston, Colin

PY - 2012/5/21

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N2 - Diatoms have ordered three dimensional porous exoskeletons (frustules) comprised primarily of amorphous silica which can be used as templates for materials applications. Hydrolysis of titanium(iv) isopropoxide (TIP) in the presence of surface bound poly(4-vinyl pyridine) or citric acid results in the formation of anatase on the surface after calcining at 450 °C, however as shown with atomic force microscopy (AFM), different morphologies are formed. Citric acid preferentially resulted in a thin film of anatase over the surface of the frustule whereas poly(4-vinyl pyridine) resulted in the formation of nano-particles of anatase (90-100 nm) on the surface.

AB - Diatoms have ordered three dimensional porous exoskeletons (frustules) comprised primarily of amorphous silica which can be used as templates for materials applications. Hydrolysis of titanium(iv) isopropoxide (TIP) in the presence of surface bound poly(4-vinyl pyridine) or citric acid results in the formation of anatase on the surface after calcining at 450 °C, however as shown with atomic force microscopy (AFM), different morphologies are formed. Citric acid preferentially resulted in a thin film of anatase over the surface of the frustule whereas poly(4-vinyl pyridine) resulted in the formation of nano-particles of anatase (90-100 nm) on the surface.

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ER -

Controlling anatase coating of diatom frustules by varying the binding layer

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