The presence of cyanotoxins in different water sources, originating from cyanobacterial algal blooms, is a ubiquitous, global concern. Microcystins (MCs) are the most commonly occurring class of cyanbacterial toxin, and are characterized as cyclic heptapeptides containing five D-amino acids and two variable L-amino acids. Over 100 MC variants exist, and microcystin-LR (MC-LR) is one of the most hazardous and prevalent. Removing MC-LR from aqueous solutions by titanium dioxide (TiO2) photocatalysis has been proposed as a possible solution for th...