Mulatu Kassie Birhanu

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Questions related from Mulatu Kassie Birhanu

Does size of metal particle always decrease with increasing of capping agent to any amount?

In the preparation of metal nanoparticle the particle size decrease with increasing capping (PVP) agent up to some value, but the size of the particle increase after adding more capping agent....

26 December 2018 4,275 4 View

What is the advantages of non-porous substrates over porous one for the same catalysts in electro-oxidation of glycerol? Any one help me, thank you

Is there a possibility that efficiency of electro-oxidation would better on flat/non-porous substrate than porous substrate for the same catalyst? I used relatively non-porous substrate for my...

09 June 2017 7,122 2 View

Must the geometrical surface area of the working electrode(sample) be less than electrochemical surface area?

I determine the surface area of my electrode using Randles Sevcik equation, however this surface area is less than the geometrical/physical surface area of the electrode. What is this means? Does...

01 December 2016 7,117 10 View