公开(公告)号：US20250161928A1

公开(公告)日：2025-05-22

申请号：US18873950

申请日：2023-12-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masahito HAYAMIZU ,  Kazuya SHIMADA ,  Asuka HIROOKA ,  Toshihiko SAKATA

IPC: B01J37/02 ,  B01J23/14 ,  B01J23/62 ,  C23C18/16 ,  C23C18/18 ,  C23C18/42

Abstract: A method for forming a tin oxide multilayer film with a catalyst layer, the method including preparing a concentrated liquid in which a tin compound is dissolved in a polar solvent; diluting the concentrated liquid with the polar solvent and a fluoride solution to prepare a reaction liquid that is a stable divalent tin solution; immersing a substance to be treated in the reaction liquid to form a tin oxide layer on a surface of the substance to be treated; and immersing the substance to be treated having the tin oxide layer formed on the surface in a catalyst solution containing catalyst metal ions to form a catalyst layer on the tin oxide layer.