CTF as a semiconductor polymer can be used as an alternative material for photocatalyst applications. Boron atoms (B) are an option to increase the effectiveness of the CTF catalyst in the photocatalysis process. This research synthesizes CTF with dicyanobenzene (DCB) and carries out boron doping using H3BO3 as a precursor. The catalyst materials are then denoted as CTF-B-1, CTF-B-2, and CTF-B-…