title: Magnetic loading of TiO2/SiO2/Fe3O4 nanoparticles on electrode surface for photoelectrocatalytic degradation of diclofenac.
abstract: A novel magnetic nanomaterials-loaded electrode developed for photoelectrocatalytic (PEC) treatment of pollutants was described. Prior to electrode fabrication, magnetic TiO(2)/SiO(2)/Fe(3)O(4) (TSF) nanoparticles were synthesized and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and FT-IR measurements. The nanoparticles were dispersed in ethanol and then immobilized on a graphite electrode surface with aid of magnet to obtain a TSF-loaded electrode with high photoelectrochemical activity. The performance of the TSF-loaded electrode was tested by comparing the PEC degradation of methylene blue in the presence and absence of magnet. The magnetically attached TSF electrode showed higher PEC degradation efficiency with desirable stability. Such a TSF-loaded electrode was applied to PEC degradation of diclofenac. After 45 min PEC treatment, 95.3% of diclofenac was degraded on the magnetically attached TSF electrode.
authors.affiliation: College of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, PR China.
authors.forename: Xinyue
authors.initials: X
authors.lastname: Hu
authors.forename: Juan
authors.initials: J
authors.lastname: Yang
authors.forename: Jingdong
authors.initials: J
authors.lastname: Zhang
mesh_terms: D002384:Catalysis; D004008:Diclofenac / Q000302:isolation & purification*; D055664:Electrochemical Techniques; D004566:Electrodes; D004867:Equipment Design; D060526:Magnetic Fields; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D055668:Photochemical Processes; D012822:Silicon Dioxide / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000295:instrumentation / Q000379:methods; D014961:X-Ray Diffraction
chemical_list: D058185:Magnetite Nanoparticles; D014874:Water Pollutants, Chemical; D004008:Diclofenac; C009495:titanium dioxide; D012822:Silicon Dioxide; D014025:Titanium