Magnetic sedimentation of nonmagnetic TiO2 nanoparticles in water by heteroaggregation with Fe-based nanoparticles

Occurrence and removal of engineered nanoparticles in drinking water treatment and wastewater treatment processes: A review

“…Another study investigated a novel method for removing TiO 2 -NPs from water [8]. Composite materials, such as Fe 3 O 4 -SiO 2 and Fe-C-SO 3 H-NPs, with magnetic cores (5 nm) were engineered for the magnetic sedimentation of nonmagnetic TiO 2 -NPs in water.…”

“…To date, the long-term hazard of metal oxide ENPs to humans remains unknown. Moreover, the ingestion of large amounts of ENPs, particularly via natural water and wastewater, may cause dangerous health problems and considerable environmental damage [8]. The effects of ZnO-NPs on various aquatic plants and animals, including algae, daphnia, sea urchins, and some aquatic mammals, have been reported [9].…”

Fe3O4@iron-based metal–organic framework nanocomposite [Fe3O4@MOF (Fe) NC] as a recyclable magnetic nano-organocatalyst for the environment-friendly synthesis of pyrano[2,3-d]pyrimidine derivatives

“…However, the easy oxidation by other substances and strong magnetic properties lead to aggregation and instability of Fe 3 O 4 MNPs ( Chen et al, 2019 ). Hence, some functional materials (e.g., MOF, carbon, polymer, PEG, and metal oxide) are loaded on the surface of the Fe 3 O 4 MNPs to increase the stability and dispersion ( Kim et al, 2013 ; Mirfakhraei et al, 2018 ; Moradi et al, 2018 ; Bakhteeva et al, 2019 ).…”

Fabrication of a hybrid phase TiO2/g-C3N4 heterojunction composite with enhanced adsorption and photocatalytic degradation of MB under visible light

“…Recently, adsorption and photocatalytic degradation of pollutants have attracted much interest and show promising potential to solve organic water pollution. [4][5][6] Adsorption is an effective strategy because of its low cost, environmental friendliness and non-toxicity.…”

“…Recently, adsorption and photocatalytic degradation of pollutants have attracted much interest and show promising potential to solve organic water pollution. 4–6 Adsorption is an effective strategy because of its low cost, environmental friendliness and non-toxicity. Depending on the difference in the characteristics of the adsorbent and organic matter, adsorption can be divided into physical adsorption and chemical adsorption.…”