NANOSHEET AND PARTICLE OF ALKALI METAL SALT OF KEGGIN-TYPE HETEROPOLYACID, AND PRODUCTION METHOD OF THEM

摘要

PROBLEM TO BE SOLVED: To provide a nanosheet composed of a crystalline layer of an alkali metal salt of a Keggin-type heteropolyacid and having a thickness of a single nanometer level and to provide a production method of the nanosheet.;SOLUTION: As a nanosheet of an alkali metal salt of a Keggin-type heteropolyacid, the nanosheet is composed of a crystalline layer of an alkali metal salt of a Keggin-type heteropolyacid and has a thickness of 10 nm or less in which the crystalline layer comprises heteropolyacid anions arranged regularly two-dimensionally in the state of heteropolyacid anions being superimposed one upon another. As a production method of the nanosheet, the production method of the nanosheet comprises dissolving a Keggin-type heteropolyacid, an alkali metal salt and alkylamine in water to prepare an acidic aqueous solution and leaving the aqueous solution to stand in atmospheric air.;SELECTED DRAWING: Figure 5;COPYRIGHT: (C)2019,JPO&INPIT