title: An efficient and novel porous nanosilica supported TiO2 photocatalyst for pesticide degradation using solar light.
abstract: A latex polymer of styrene-acrylic acid emulsion is used as a template for the synthesis of novel porous nanosilica (PNS) material. TiO(2) is dispersed over PNS by solid state dispersion and the composite materials are characterized by XRD, nitrogen adsorption-desorption isotherms, SEM and TEM measurements. The photocatalytic activities of the composite TiO(2)/PNS catalysts are evaluated for degradation of isoproturon pesticide in water with different parameters under solar light. Furthermore, commercial pesticide solutions containing imidacloprid and phosphamidon were also degraded successfully with the composite system using the same developed conditions for isoproturon degradation. The 5 wt% TiO(2)/PNS is found to be active in the present investigation.
authors: Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology, Tarnaka, Hyderabad, Andhra Pradesh 500607, India.
authors: Mangalampalli V
authors: MV
authors: Phanikrishna Sharma
authors: Gullapelli
authors: G
authors: Sadanandam
authors: Ajjarapu
authors: A
authors: Ratnamala
authors: Valluri
authors: V
authors: Durga Kumari
authors: Machiraju
authors: M
authors: Subrahmanyam
mesh_terms: D000327:Adsorption; D002384:Catalysis; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D010573:Pesticide Residues / Q000032:analysis* / Q000302:isolation & purification*; D010575:Pesticides / Q000032:analysis* / Q000302:isolation & purification*; D055668:Photochemical Processes; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry*; D012993:Solar Energy; D013472:Sunlight; D014025:Titanium / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods; D014873:Water Pollutants / Q000032:analysis*; D018508:Water Purification / Q000379:methods*
chemical_list: D010573:Pesticide Residues; D010575:Pesticides; D014873:Water Pollutants; C009495:titanium dioxide; D012822:Silicon Dioxide; D014025:Titanium