Claims:] WE CLAIMS
1. The novel work demonstrates the simultaneous preparation of copper doped cobalt (III) oxide by applying 2.5 V using spent diet coca-cola aluminum film as an electrodes and Anodization of same aluminum film. We have used spent coca-cola aluminum as both anode and cathode by polishing it. The crystal structure and optical properties of all the samples were characterized by X-ray diffraction study, field emission scanning electron microscopy, energy-dispersive X-ray diffraction study, Frontier transmittance Infrared spectroscopy and UV-Visible spectroscopic techniques. Till date many methods have found difficulties in controlling crystalline structure on doping of transition metals. However, the samples prepared using spent diet coca-cola aluminum films as electrodes by applying 2.5 V for 15 min, have shown controllable crystalline structure, crystal size and optical properties compare to non-electrochemical method. This method could be useful in controlling crystalline structure on doping using cheap electrodes (spent coca-cola aluminum films). So our group is interested to patent this method.
2. According to claims 1# the invention is to provide the Low cost photovoltaic materials have been the subject of intensive research activities for over half century ago.
3. According to claims 1,2# the invention is , A promising alternative to present silicon and multifunction solar cells are low-cost transition metal doped semiconductors for dye sensitized solar cells.
4. According to claims 1,2# the invention is to Controlling the crystal size of semiconductors, one can change the energy gap.
5. According to claims 1,3,4# the invention is to, Low energy gap in transition metal doped semiconductors with the photosensitivity to light in the visible region can greatly improve the efficiency.
6. According to claims 1# the invention is to, Amongst the various types of semiconductor have been widely investigated. The parameters such as size, crystalline and band gap are considered to be highly important for the promising applications of semiconducting nanorods for dye-sensitized solar cells.
7. According to claims 1# the invention is to, There are “n” number of synthetic methods are available in the literature, but no one would have used spent diet coca-cola aluminum-can as electrodes to synthesize well ordered and high crystalline transition metal doped semiconductors.
8. According to claims 1,2,3# the invention is to, In this connection, we have set up novel simultaneous preparation of Cu doped Co3O4 using spent coca-cola can as electrodes and Anodization of same electrodes.
9. According to claims 1,5# the invention is to, The novel method of using spent coca-cola aluminium as electrodes and applied potential may accelerate the reaction rate which improves the crystalline.
10. According to claims 1,4# the invention is to, The samples have been characterized with the help of X-ray diffractometry (XRD), field emission scanning electron microscopy (FESEM) and UV-Visible spectroscopy.
11. According to claims 1,2 # the invention is to, We have observed interesting results, where the electric field between the coca-cola aluminum can had vital function in crystallizing doped samples compare to the without electric field.

Dated this ……30/10/2019
DR. VIDYASAGAR. C. C

, Description:FIELD OF THE INVENTION
[10] My invention relates to a method for functionalizing the aluminum oxides obtained via anodization of aluminum or its alloys, by means of ions and/or nanoparticles of silver, copper or other metals, in order to confer antibacterial properties to the final manufacts. More particularly, the present invention refers to a chemical process to deposit and grow, in a controlled way, clusters of nanometric dimensions suitable for the functionalization of the pores of the aluminum oxide layer obtained via anodization and stabilize the same particles, without substantial modifications of the standard process of anodizing and sealing.