Study on the modification of positively charged composite nanofiltration membrane by TiO2 nanoparticles

► PEI/HACC/TiO2/TMC composite nanofiltration membrane was fabricated successfully. ► HACC was used as dispersant agent of TiO2 nanoparticles. ► TiO2 was added into the nanofiltration membrane by interfacial polymerization reaction.