Claim: Titanate nanosheet ( HxTi2—x/4☐x/4O4 ⦁ H2O (x~0.7; ☐, vacancy) have a number of unique properties and are a finite ultrathin sheets.
Evidence: Structurally, they are infinite ultrathin (~0.75 nm) 2D sheets with a high density of negative surface charges originating from the oxygen atoms at the corners of the adjoint octahedrons .