Problem to be solved: to suppress the additives such as dispersants as much as possible, and to efficiently generate silver nanoparticles carrying powder without impurities.Solution: an aqueous solution containing an aqueous ammonia solution containing an aqueous solution of silver nitrate was added with a mother powder carrying silver nanoparticles, and at least two electrodes were placed in the air at the upper part of the liquid surface of the mixed aqueous solution. A method of manufacturing a silver nanoparticle bearing powder obtained by generating a pressure between the electrode and the liquid surface by applying pressure, and its silver nanoparticles supported powder.Diagram【課題】分散剤等の添加物をできるだけ抑え、不純物の無い銀ナノ粒子担持粉体を効率良く生成すること。【解決手段】硝酸銀水溶液にアンモニア水溶液を添加した混合水溶液に、銀ナノ粒子を担持させる母粉体を加え、少なくとも二本の電極を混合水溶液の液面上部の気中に配置して、希ガス、酸素、希ガスと酸素の混合ガス、のいずれかの雰囲気下で電極間に電圧を印加して電極-液面間でプラズマを発生させることにより得られる銀ナノ粒子担持粉体の製造方法、およびその銀ナノ粒子担持粉体。【選択図】図1
