SYNTHESIS OF AU, PD, PT OR AG NANO- OR MICROCRYSTALS VIA REDUCTION OF METAL SALTS BY CELLULOSE IN THE IONIC LIQUID 1-BUTYL-3-METHYL IMIDAZOLIUM CHLORIDE

摘要

The invention refers to a preparation method for nano- or microcrystals of Au, Pd, Pt or Ag comprising the steps of: a) preparing an ionic liquid mixture of cellulose and at least one metal salt selected form the group consisting of Au, Pd, Pt and Ag in l-butyl-3-methylimidazolium chloride; and b) (i) thermally inducing a reduction of the metal salt with cellulose by heating of the mixture to a temperature in the range of 50 to 250°C; or (ii) photoreduction of the metal salt by irradiation of the mixture with light having a wave length in the range of 200 to 800 nm.