title: Mesoporous BaTiO₃@SBA-15 derived via solid state reaction and its excellent adsorption efficiency for the removal of hexavalent chromium from water.
abstract: We report the synthesis of a barium-titanate/mesoporous silica nanocomposite material BaTiO3@SBA-15 via aerosol assisted solid state reaction using SBA-15 as a hard template. Hexavalent chromium is one of the most harmful contaminants of industrial waste-water. We have used BaTiO3@SBA-15 nanocomposite as an adsorbent for the removal of chromium(vi)-contaminated water and it showed an adsorption capacity of 98.2 wt% within only 40 min contact time in a batch reactor. This mesoporous composite has retained this excellent adsorption efficiency of hexavalent chromium for several repetitive cycles, suggesting its future potential for the remediation of water contaminated with Cr(vi).
authors.affiliation: Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata - 700 032, India. msab@iacs.res.in.
authors.forename: Vandana
authors.initials: V
authors.lastname: Kumari
authors.forename: Manickam
authors.initials: M
authors.lastname: Sasidharan
authors.forename: Asim
authors.initials: A
authors.lastname: Bhaumik
mesh_terms: D000327:Adsorption; D017609:Barium Compounds / Q000737:chemistry*; D002152:Calorimetry, Differential Scanning; D002857:Chromium / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D053761:Nanocomposites / Q000737:chemistry*; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature; D013816:Thermodynamics; D014025:Titanium / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification
chemical_list: D017609:Barium Compounds; C509969:SBA-15; D014874:Water Pollutants, Chemical; D002857:Chromium; C024547:barium titanate(IV); C074702:chromium hexavalent ion; D012822:Silicon Dioxide; D014025:Titanium