[13p-A404-1~13] 12.1 Fabrications and Structure Controls

[13p-A404-2] Production of chloroauric acid by alternate current electrochemical method

〇Tomohide Takami¹, Kei Oya¹, Kei Aoshika¹, Masaki Ageishi², Hideyuki Magara², Shuichi Ogawa², Yuji Takakuwa² (1.Kogakuin Univ., 2.IMRAM Tohoku Univ.)

Keywords:gold, nanoparticle, AC electrochemical etching

We have discovered a method to produce chloroauric acid without using strong acids, by using the alternate current electrochemical etching of gold wires in KCl solution. The change of the solution color suggested the formation of chloroauric acid. By applying Turkevich method, gold colloid was formed. We have observed the gold nanoparticles from the gold colloid with TEM and SEM-EDS.