Electroless plating redox potential

Perhaps, it becomes difficult to deposit gold (Au) NPs directly, as Au shell, on the surface of poly(DCHD) core by means of the photocatalytic reduction method [60], since the redox potential of [AuCU] , precusor of Au, is 1.002 mV vs SHE. This value is close to the redox potential of water given by (2) as well as VB for PDA as shown in Fig. 12. In addition, [AuC ] may absorb some VIS light, which is also undesirable in the present preparation procedure. However, already-deposited Ag NPs on poly(DCHD) core can be regarded as both a catalyst and a substrate for electroless plating with other kinds of metals. Thus, we could prepare metal nanoshell structure by means of post-chemical reduction treatment. 

Although reactions with hydrazine as an oxidant are possible, these are less frequent. Hydrazine is basically a strong reducing agent and as such reduces many ions to lower oxidation states or even to the bare metal and even beyond, to the hydride. The commonly encountered redox reactions of hydrazine are its autoxidation or atmospheric decay, oxidation in solution, and electro-oxidation. These redox reactions are governed by their reduction potentials and are responsible for its applications in fuel cells, electroless plating, or photographic processes. 

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