title: Nanosponge cyclodextrin polyurethanes and their modification with nanomaterials for the removal of pollutants from waste water: A review.
abstract: Water is a worldwide vital resource for sustaining life and due to the pollution of water by different classes of pollutants (inorganic, organic and pathogens), many ongoing studies in water purification remain a critical issue to governments, scientists and industries. The challenge is to develop a water purification technology which will be effective at removing these contaminants simultaneously and reducing their concentrations to ultra low levels from waste water. This review article serves to give an overview on cyclodextrin nanosponge adsorbents which have already been used for water treatment. The modification of these cyclodextrin nanosponges with existing adsorbent nanomaterials (carbon nanotubes, TiO2and silver nanoparticles) and the factors affecting the adsorption capacity of these nanosorbents are discussed. The nanotoxicity of these engineered nanosorbents material is also addressed since nanotoxicity is a major concern to human health and environment.
authors.affiliation: Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, Johannesburg 2028, South Africa.
authors.forename: Anny
authors.initials: A
authors.lastname: Leudjo Taka
authors.affiliation: Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, Johannesburg 2028, South Africa; DST/NRF Centre of Excellence in Strong Materials, University of the Witwatersrand, Johannesburg 2050, South Africa; Centre for nanomaterial, University of Johannesburg, Doornfontein Campus. Johannesburg 2028, South Africa. Electronic address: kriveshinip@uj.ac.za.
authors.forename: Kriveshini
authors.initials: K
authors.lastname: Pillay
authors.affiliation: Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, Johannesburg 2028, South Africa; DST/NRF Centre of Excellence in Strong Materials, University of the Witwatersrand, Johannesburg 2050, South Africa; Centre for nanomaterial, University of Johannesburg, Doornfontein Campus. Johannesburg 2028, South Africa. Electronic address: mbianday@uj.acza.
authors.forename: Xavier
authors.initials: X
authors.lastname: Yangkou Mbianda
mesh_terms: D000327:Adsorption; D003505:Cyclodextrins / Q000737:chemistry*; D006801:Humans; D053768:Metal Nanoparticles / Q000737:chemistry; D049329:Nanostructures / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry; D011140:Polyurethanes / Q000737:chemistry*; D012834:Silver / Q000737:chemistry; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000295:instrumentation / Q000379:methods*
chemical_list: D003505:Cyclodextrins; D037742:Nanotubes, Carbon; D011140:Polyurethanes; D012834:Silver; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Adsorption; Nanosorbents; Nanotechnology; Nanotoxicity; Water purification; Water treatment