Nano composite bimetallic or core shell formed by chemical reduction method. is there any procedure to know the best solvent to test the activity of formed composite with out any support or support is essential for dissolving the nano bimetallic or core shell composite.
If you prepare your composite in an aqueous medium, reducing the chloride salts with ascorbic acid or other reducing and complexing hydrophilic organic ligand, the particles usually are quite stable in solution. If you produce them by solvothermal synthesis in organic medium, usually some phosphine or mercapto ligands are added to stabilize the solution. What do you mean by the activity in this case?
I presume you mean catalytic activity for the fuel cell type reactions. If so, you can investigate the activity of your particles in solution using a rotating ring disk electrode. There is plenty of literature on this.
The system you describe is colloidal. The support is essential for stabilize de metal deposit. Try clssic test for solubility, put a amount of nanocomposite then add solvent.
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