A novel photocatalytic self-cleaning TiO2 nanorods inserted graphene oxide-based nanofiltration membrane

Ag/AgBr/AgVO3 Photocatalyst-Embedded Polyacrylonitrile/Polyamide/Chitosan Nanofiltration Membrane for Integrated Filtration and Degradation of RhB

“…However, when the as-prepared membrane was subjected to visible light illumination, a negligible change was discovered in the color of the photocatalytic film (Figure d), suggesting that the membrane showed self-cleaning properties in visible light because the photocatalyst could decompose RhB into small particles under visible light irradiation . Similar statements in previous papers showed that photocatalysis can endow the membrane self-cleaning ability, for example, “More importantly, the inserted TiO 2 endowed great photocatalytic self-cleaning ability to membrane, leading to a continuous and efficient separation of soluble organic dye contaminants …”

“…37 Similar statements in previous papers showed that photocatalysis can endow the membrane self-cleaning ability, for example, "More importantly, the inserted TiO 2 endowed great photocatalytic selfcleaning ability to membrane, leading to a continuous and efficient separation of soluble organic dye contaminants. 38 " and "It is reasonable to imagine that if an additional layer of photocatalysts existed on the surface of these graphene-based films, the intercepted fouling would be decomposed quickly by these catalysts under light irradiation, making these filtration membranes possess self-cleaning function. 37 " Furthermore, the Ag/AgBr/AgVO 3 -NF membrane could remove 90.3% of RhB with visible light exposure (Figure 6e), which is higher than its filtration efficiency under dark conditions.…”

Recent Advances in Plasmonic Photocatalysis Based on TiO2 and Noble Metal Nanoparticles for Energy Conversion, Environmental Remediation, and Organic Synthesis

“…[65] Generally, these parameters affect the surfaceactive sites, electron transport, and mass transfer events. Different morphologies of TiO 2 have already been explored such as microspheres, [66] nanospheres, [67] nanosheets, [68][69][70] nanorods, [71,72] nanotubes, [73] and nanowires. [74,75] There are well-established procedures for the synthesis of TiO 2 in the form of powder, crystals and thin films.…”

Graphene-based composite membranes for nanofiltration: performances and future perspectives

“…The use of graphene decorated with TiO 2 took the process of nanofiltration of dyes a step further-their removal and photo-oxidative degradation during the same process [51]. The presence of TiO 2 nanoparticles at GO decoration (microwave field synthesis) led to membranes being obtained in the polyamide/polyacrylonitrile system with high stability when removing heavy metals from organic solvents (hexane and heptane) [52].…”