DESC:So far ZnO Nano composites and doped ZnO were synthesized by many physiochemical methods like Sol-gel, chemical co-precipitation, CVD (chemical vapour deposition), electrochemical deposition, spray pyrolysis and RF sputtering (E. A. Meulenkamp, “Synthesis and growth of ZnO nanoparticles,” Journal of Physical Chemistry B, vol. 102, no. 29, pp. 5566–
5572, 1998. [12] P. S. Kumar, A. D. Raj, D. Mangalaraj, and D. Nataraj, “Growth and characterization of ZnO nanostructured thin films by a two step chemical method,” Applied Surface Science, vol. 255, no. 5, pp. 2382–2387, 2008.).
Vanadium-ZnO nano flakes were Sono chemically synthesized using ultrasonic irradiation via probe sonicator taking Vanadium and Zinc in 1:1 ratio molar concentration. 100 ml of 0.1 molar Ammonium meta vanadate (NH4VO3) was added into 100 ml of 0.1 molar zinc Acetate (Zn(CH3COO)2.2H2O) prepared in distil water, after thoroughly mixing the solution for 30 minutes, 02 ml of 0.2 molar cetyl trimethyl ammonium Bromide (C19H42BrN) was added. This solution was then sonicated for 5 minutes, after formation of yellow coloured PPT the solution was sonicated for 3 hours at 60W or 6 kHz with the simultaneous dropwise addition of 5% Ammonia. the yellow white ppt thus obtain was filtered and wash with distilled water 5-6 times. The PPT was dried at 160°C for 2 hour.
Sono-chemical method of material synthesis is most recent, simple, economic and effective way to synthesize Nanomaterials. Hence in this work we have sono-chemically synthesized the Vanadium-ZnO nano flakes in 3 hours. The as synthesize Vanadium-ZnO nano flakes were than characterized with instrumental analytical techniques like XRD to establish it's crystal structure and surface property by SEM and TEM.
The as synthesize Vanadium-ZnO nano flakes were than characterized with instrumental analytical techniques like XRD to establish it's crystal structure and surface property by SEM and TEM. EDAX to establish the presence of Zinc and Vanadium in nano flakes in almost 1 ratio 1.

Fig. EDAX results

Fig. SEM image
,CLAIMS:I/We Claim:

1. A method for preparing Vanadium-ZnO nanoflakes
Comprising steps of:
Step a: Addition 100 ml of 0.1 molar Ammonium meta vanadate (NH4VO3) was added into 100 ml of 0.1 molar zinc Acetate (Zn(CH3COO)2.2H2O) prepared in distil water; and
Step b: after thoroughly mixing the solution for 30 minutes, 02 ml of 0.2 molar cetyl trimethyl ammonium Bromide (C19H42BrN) was added.
Step c: after this sonication is done for 5 minutes, a yellow colored precipitate will be formed.
Step d: the solution is then sonicated for 3 hours at 60W or 6 kHz with the simultaneous drop wise addition of 5% Ammonia.
Step e: The yellow white ppt thus obtains will be filtered and wash with distilled water 5-6 times. The PPT was dried at 160°C for 2 hour.
2. The method as claimed in claim 1, wherein the average particle size of mechanically alloyed powder particles is 0.5±1.0um or less than 01 um.
3. The method as claimed in claim 1, wherein the concentration of Ammonium meta vanadate (NH4VO3) is 0.1 molar.
4. The method as claimed in claim 1, wherein the concentration of zinc Acetate (Zn(CH3COO)2.2H2O) is 0.1 molar.
5. The method as claimed in claim 1, wherein said sonication time is 3 hours.
6. The method as claimed in claim 1, wherein said of frequency of sonicator is 6 kHz.
7. A nano-sized Vanadium-Zinc Oxide nanoflakes as prepared by the process of claim 1 on a nano-sized powdered composite.