Anodized aluminum oxide

Routkevitch D, Bigioni T, Moskovits M, Xu JM (1996) Electrochemical fabrication of CdS nanowire arrays in porous anodic aluminum oxide templates. J Phys Chem 100 14037-14047... 

Suh JS, Lee JS (1997) Surface enhanced Raman scattering for CdS nanowires deposited in anodic aluminum oxide nanotemplate. Chem Phys Lett 281 384-388... 

The y- modification of alumina is the only one reported for anodic aluminum oxide. However, thermodynamic data206 and the results of gravimetric analysis207,208 indicate that a-Al203 is also possible if the oxide is annealed at temperatures of about 1200°C. 

Hydration of Growing and Aging Anodic Aluminum Oxides... 

V. ELECTROPHYSICAL PROPERTIES OF ANODIC ALUMINUM OXIDE FILMS... 

Photoluminescence (PL) of anodic aluminum oxides was first investigated in films formed in organic acids, the most intense PL being in those formed in oxalic acid. Tajima, in his comprehensive review315 on electro- and photoluminescence in anodic oxide films, concluded that PL centers are carboxylate anions incorporated into the oxide. On the other hand, Eidel berg and Tseitina316 proposed... 

There are also several proposals to use anodic aluminum oxides in producing optoelectronic devices. Porous oxides may find use as antireflecting coatings for optical pathways. Anodic alumina films doped by Eu and Tb are promising for application in electroluminescent cells for TEELs.28... 

F. Li, L. Zhang, and R. M. Metzger, On the growth of highly ordered pores in anodized aluminum oxide, Chem. Mater. 10, 2470 (1998). 

Figure 2.14. The structure of an anodized aluminum oxide membrane (Anopore) as shown in Anotec Separations (1986) (a) is a homogeneous membrane (b) an asymmetric membrane.

Figure 2.16. Production scheme of a anodic aluminum oxide membrane (Smith 1973,1974).

Itaya, K., S. Sugawara, K. Arai and S. Saito. 1984. Properties of porous anodic aluminum oxide films as membranes. J. Cheim. Eng. Japan 17(5) 514-20. 

Smith, A. W. 1973. Porous anodic aluminum oxide membrane. J. Electrochem. Soc. 120(8) 1068-69. 

Fumeaux, R. C., A. P. Davidson and M. D. Ball. 1987. Porous anodic aluminum oxide membrane catalyst support. European Patent Appl. 0,244,970A1. 

Fig. 10.1.2 SEM photographs of the anodic aluminum oxide Film with 30 nm channels (a) surface and (b) cross section. (From Ref. 12.)...

A variety of nanomaterials have been synthesized by many researchers using anodic aluminum oxide film as either a template or a host material e.g., magnetic recording media (13,14), optical devices (15-18), metal nanohole arrays (19), and nanotubes or nanofibers of polymer, metal and metal oxide (20-24). No one, however, had tried to use anodic aluminum oxide film to produce carbon nanotubes before Kyotani et al. (9,12), Parthasarathy et al. (10) and Che et al. (25) prepared carbon tubes by either the pyrolytic carbon deposition on the film or the carbonization of organic polymer in the pore of the film. The following section describes the details of the template method for carbon nanotube production. 

In addition to the impregnation method with furfuryl alcohol, Kyotani et al. attempted to deposit pyrolytic carbon on the inside of the straight channels of anodic oxide film in the following way (9,12). They used two types of anodic aluminum oxide films with different channel diameters (30 and 230 nm). Each anodic oxide film... 

Che et al. recently demonstrated that not only propylene but also ethylene and pyrene can be used for the production of carbon tubes (25). They subjected anodic aluminum oxide template (channel diameter 200 nm) to either ethylene or pyrene gas stream at 900°C for 10 min and then the resultant carbon tubes were removed... 

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