Photocatalytic oxidation of Rhodamine B with ferric oxide thin films under solar illumination
作者： MA Mahadik , SS Shinde , KY Rajpure , CH Bhosale , None
DOI: 10.1016/J.MATERRESBULL.2013.06.031
关键词: Luminescence 、 Inorganic chemistry 、 Photocatalysis 、 Thin film 、 Iron oxide 、 Oxide 、 Rhodamine B 、 Materials science 、 Ferric 、 Hematite
摘要: Abstract Thin films of iron oxide are synthesized by spray pyrolysis technique using ferric chloride as precursor in non-aqueous medium. The effect solution concentration onto photochemical, structural, morphological, optical, luminescence and thermal properties has been investigated. Structural analysis confirms the rhombohedral crystal structure with strong (1 1 0) orientation. Raman spectrum reveals that deposited contain α-phase Fe 2 O 3 (hematite). SEM images optimized thin show microneedle like varying grain size from 75 to 120 nm. observed direct band gap is about 2.0 eV for film. Room temperature photoluminescencespectra showed three pronounced emission peaks all concentrations. photocatalytic oxidation Rhodamine B hematite under solar illumination first order rate constants this heterogeneousphotocatalysis evaluated a function initial (RhB). extent mineralization degraded sample confirmed total organic carbon (TOC) andchemical oxygen demand (COD)analysis. This work suggests prepared photoelectrodes demonstrate an excellent ability remove toxic dyes industrial wastewater.
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