Why does Au3+ ions spontaneously reduce faster in Methanol than water/aqueous system?

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Muwei Ji

methanol can be used as reductant.

Muzzamil Ahmad Eatoo

Muwei Ji, why is methanol a better-reducing agent than water for reducing Au3+ to Au NPs?

Article Why do some metal ions spontaneously form nanoparticles in w...

because the methanol can been oxided into formaldehyde or acid easily but the water is hard to be oxided into oxygen. It means that methanol has higher activity for reduction.