Recently, methanol and ethanol were reported as possible alternative candidates. The RT synthesis can be performed using ca. 20 v.% of mono-alcohol as the source of reducing agents . The method detailed elsewhere leads to size-controlled NPs in the range 5-30 nm. Despite the absence of common additives, the method leads to colloidal dispersions of NPs stable for years .The method presents the benefits to require cheap, relatively low toxicity and low viscosity chemicals: Desirable features to more easily process the NPs, e.g. to deposit the NPs on various surfaces to develop heterogeneous catalysts without the need for intensive and waste-generating steps that typically requires strong acids when polyols are used . Nevertheless, the overall kinetics of NP formation are slower and the experimental window where the synthesis can be considered successful is narrower than in the case of polyols-mediated syntheses . The use of methanol is not preferred due to the higher toxicity of methanol and the fact that methanolmediated syntheses lead to larger ca. 10-30 nm NPs.