1. Secondary Nanotubes and Fillsin
C-NT
V3O7 - NR
Al2O3
MoO3
RuO2
ZrO2
carbon
TiO2
Ga2O3
BaTiO3
PbTiO3 in on Fe
TiO2
SiO2
G. Patzke, F. Krumeich, R. Nesper, Angew. Chem. 2002, 114, 2554

2. Composite Nanotubes
Self-assembly in a colloid containing PbS nanoparticles, a polymer (poly(ethylene oxide)), and a surfactant (sodiumdodecylsulfate)
tube walls comprise well-developed layers of PbS nanoparticles that are embedded in the organic matrix structure

3. Silica Nanotubes Pt Hippe, Wark, Lork, Schulz-Ekloff,
Microp. Mesop. Mater. 31 (1999) 235
[Pt(NH3)4(HCO3)2 single crystals
coated by SiO2 and TiO2
through Si(OEt)4 or Ti(OEt)4 Pt

4. Template-assisted Synthesis of Nanotubes
Rod-like Template
Nanotube
Coating of anisotopically structured template with a second material
Removal of template
Caruso, Antonietti, Chem. Mater. 13 (2001) 3272

5. Template-assisted Synthesis of Nanotubes
Next steps
Template-assisted Synthesis of Nanotubes
Silica nanotubes
Wires of V3O7·H2O
Intermediate product
TEM
V map
Silica Nanotubes
Si map
J. Zygmunt, F. Krumeich, R. Nesper, Adv. Mater. 2003, 15, 1538

6. Topotactic redox reactions of copper(II) and iron(III) salts within VOx Nanotubes
Novel Cu- and Fe-containing nanotubes of composition
VO (C12H28N)0.21Cu0.08(H2O)0.56Cl0.01 and
VO (C12H28N)0.13Fe0.19(H2O)0.33Cl0.01
have been obtained by exchange of the protonated template in dodecylamine-VOx nanotubes with Cu(II) and Fe(III) salts. The exchanged materials have quite different characteristics in respect to the parent nanotubes, namely a wider inner diameter and thinner walls, owing to reduced interlayer spacings in their multiwalled structure.

7. Multiple Coatings Asbestos - C coated SiO2 tubes – TiO2 coated
SiO2 tubes – Fe2O3 coated
Triple layer rods 1. VOx fibers 2. SiO2 tubes 3. carbon coating
Iron oxide rods-
C coated