Fig. 4: The mechanism of quantum interference enhancing photocatalytic uranium removal.

a, b DOS of C and F atom in TAPT-TPA-2F COFs and TAPT-TPA-4F COFs. c Schematic diagram of molecular orbital energy levels and electron arrangement of C-F bond. d The Bader charge distribution, orbital hybridization and electron local function of TAPT-TPA-2F COFs, TAPT-TPA-4F COFs and TAPT-TPA COFs. e Band distribution of TAPT-TPA-2F COFs, TAPT-TPA-4F COFs and TAPT-TPA COFs.