Can anybody help me to solve the issue of depositing silver nanoparticles on the walls of the reaction vessel instead of the target templates during reduction of silver nitrate? How can i avoid this and ensure that the silver nanoparticles are getting attached only on the substrate particles?
Can you go in detail of the process you employed? what kind of substrates you used? also, I am assuming the reaction vessel is glass. If so, when you are just reducing silver nitrate to form and aqueous colloidal solution 9which I generally do), silver shouldn't attach to vessel unless they aggregate or stored for long causing silver reactions with glass!
It is happening because the synthesized silver nanoparticles have a tendency to aggregate. Also possibility of aerial oxidation to form silver oxide might be there. Please use some stabilizing agent and do your reaction in inert atmosphere.
The exact experimental set up is necessary for a correct answer to be given. It could be an issue with the bias voltage or even the way you are using mechanical shutters if it's a magnetron sputtering system. Or it could be a number of issues really
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