Table 1. Polymer and Representative Organic Molecules-Based Photoanodes and Their PEC Performances.

photoanode design	photocurrent density (mA/cm2 vs RHE)	PEC reaction	pH	reference
FTO/CNx (TVC)	0.12 at 1.55 V	water splitting	11.6	(86)
FTO/SnO2/CNx (EPD)	0.15 at 1.23 V	water splitting	7.0	(89)
FTO/2D-CNx	0.23 at 1.23 V	water splitting	7.0	(90)
FTO/S-CNx	0.1 at 1.23 V	water splitting	13.0	(91)
FTO/CNx (porous)	0.18 at 1.23 V	water splitting	7.0	(94)
FTO/CNx	0.116 at 1.23 V	water splitting	13.0	(95)
FTO/CNx (porous)	0.353 at 1.23 V	water splitting	7.0	(98)
FTO/CNx	0.23 at 1.23 V	water splitting	6.0	(100)
FTO/s-BCN	0.102 at 1.23 V	water splitting	6.6	(104)
ITO/PMPDI/CoOx	0.150 at 1.56	water splitting	7.0	(107)
OTE/SnO2/C60-ZnP(Py)4	1.0 at 1.23 V	water splitting	7.0	(113)
FTO/CN-MSG/CN-M	0.270 at 1.23 V	water splitting	13.5	(105)
ITO/PBDB-T/ITIC/GaIn@Ni/NiFe-LDHs	15.1 at1.23 V	water splitting	13.6	(116)
FTO/CPN:SnO2	3.3 at 0.54 V	HI splitting	0	(117)
FTO/mZnO/PBDTTTPD-PNDITCVT/Co3O4	>2 at 1.23 V	water splitting	9	(118)
FTO/[Ru(bpy)2(4,4- (PO3H2)2bpy)]Br2/TiO2	>1.7 at 0.2 V	water splitting	6.8	(119)