Molecular oxygen as a mediator in the electrosynthesis of gold nanoparticles in DMF

Metallic nanoparticles for electrocatalytic reduction of halogenated organic compounds: A review

“…The preparation of metallic (Ag, Rh, Pd, Au) and bimetallic (RhPd, PdAg, Au/Cu 2 O) NPs can also be achieved by mediated electrosynthesis [41,107,108,111,116]. In this case, the electrode potential applied corresponds to the redox potential of the mediator which is not consumed during the reaction.…”

“…In this case, the electrode potential applied corresponds to the redox potential of the mediator which is not consumed during the reaction. Various mediators have been reported for the synthesis of NPs, such as molecular oxygen [116], methylviologen [107,111] [108]. The mediated electrochemical synthesis requires catalytic amounts of nonconsumable mediator (no waste generated), which makes it more environmentally attractive than chemical synthesis.…”

Pros and Cons of Sacrificial Anode Electrolysis for the Preparation of Transition Metal Colloids: A Review

“…The simultaneous use of two surfactants as electrolytes and stabilizers, in water‐acetone mixture, led to the formation of nano‐dumbbells (Figure ) . Yanilik et al . found out that molecular oxygen could be used as reduction mediator in the synthesis of AuNPs, from Au(I) ions generated in situ upon dissolution of a metal anode during electrolysis.…”

“…[33] The simultaneous use of two surfactants as electrolytes and stabilizers, in water-acetone mixture, led to the formation of nano-dumbbells ( Figure 3). [32] Yanilik et al [34] found out that molecular oxygen could be used as reduction mediator in the synthesis of AuNPs, from Au(I) ions generated in situ upon dissolution of a metal anode during electrolysis. Lately, they demonstrated that many types of mediators could be used for SAE electrosynthesis, [35] ranging from methylviologen, to C 60 , [Me(bipy) n ] n + , etc.…”

The two-step electrosynthesis of nanocomposites of Ag, Au, and Pd nanoparticles with iron(ii) oxide-hydroxide

“…Oxygen can also perform the function of a mediator in the electrosynthesis of several MNPs. 49,50 In this regard, recently [45][46][47][48] we offered one-pot two-step electrosynthesis of the discussed M 2 /M 1 O x composites of MNPs with metal oxides using dissolved oxygen as a reagent and mediator at potentials of superoxide ion generation in an aprotic medium. In the first step, M 1 O x oxide is expected to be obtained by reacting the superoxide ion with the metal ion M 1z+ and in the second step, M 2 NPs should be produced by reduction of the metal ion M 2z+ by superoxide ions in the resulting solution of M 1…”