sodium tellurite is the available Tellurium source. I have tried once and obtained a black powder but it’s getting disappeared while washing with acetone. What could be the Color range of Zinc telluride nano particles?
Good day, Remya Muralimanohar! Hope you are doing well.
I am not an expert on that field, however, here what I've found:
"The synthesis approach is very simple and does not require any special set up. A mixture of Te and NaBH4 (molar ratio; Te:NaBH4 = 1:2.4) was added in 200 ml deionized water and the mixture was stirred in a magnetic stirrer for 20 min at room temperature. Zinc telluride was prepared from Zn2+ and NaHTe solution. The 1:1 molar ratio of Zn2+:Te2- was mixed and was stirred for half an hr at room temperature in a magnetic stirrer. The temperature was then maintained at 90°C for 3 hours. The solution was then filtered and the obtained precipitate was washed with distilled water. It was then finally dried at 45-60°C. The precipitate obtained was of ZnTe, which was grinded to a powder form."
Link: Article Synthesis and characterization of ZnTe nanoparticles
"ZnTe nanoparticles have been prepared by chemical synthesis method, because it is very common method for II-VI compound of the periodic table. This method is based on the chemical replacement reaction between chemical compounds providing metal ions (Zn2+) and those containing chalcogenide ions (Te2-). Materials which have been used for making zinc telluride (ZnTe) are zinc acetate [Zn (OCOCH3)2] and sodium telluride (Na2Te) as the source of Zn2+ and Te2- ion respectively. To make ZnTe nanoparticle, freshly prepared 100 ml solution of zinc acetate [Zn(OCOCH3)2] (0.2M) is taken in magnetic stirrer. Then 100 ml solution of sodium telluride [Na2Te] (0.1M) in 50% methanol and 50% water (i.e. 25 ml methanol & 25 ml water) was added while stirring constantly. The cream coloured precipitate was formed instantaneously. To remove any type of unreacted chemicals or impurities, precipitate has been washed three times with methanol and dried it by evaporation method. The particle size of the nanoclusters can be changed by zinc acetate, sodium telluride and ethylenediamine solution."
Thank you Dr Sagayaraj, could you please tell me whether have you tried yourself this method for the precipitation of ZnTe nanoparticles. In that case did u use any capping ligand in the process