So far, the use of TiO2–GO to make photocatalytic membranes for water treatment is still in its infancy. To our best knowledge, there have been only two relevant studies on this topic. In one study, the adsorption capability of the membrane was investigated but without any discussion on its photocatalytic properties [40], while in another study the photocatalysis-enhanced degradation of organic dyes was investigated under UV irradiation only [41]. Note that these studies adopted a relatively complex two-step membrane synthesis procedure that first fabricated the TiO2–GO composite nanoparticles and then assembled them onto a base membrane.