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首页> 外文期刊>Ionics >Photoelectrocatalytic activity of immobilized Fe2O3 photoelectrode for degradation of salicylic acid and methyl orange dye under visible light illumination
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Photoelectrocatalytic activity of immobilized Fe2O3 photoelectrode for degradation of salicylic acid and methyl orange dye under visible light illumination

机译：固定式Fe2O3光电极的光电催化活性，可见光照明下水杨酸和甲基橙染料降解

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摘要

Fe2O3 thin films have been successfully synthesized by chemical spray pyrolysis technique. The effect of solution quantities onto the photoelectrochemical (PEC), structural, morphological, and optical properties has been studied. Film prepared at 50 ml solution quantity shows the maximum photoelectrochemical performance in 0.1 M NaOH electrolyte. X-ray diffraction studies reveal that the synthesized Fe2O3 thin films are polycrystalline with rhombohedral crystal structure. The surface morphology of Fe2O3 thin films shows that needle-shaped grains have slowly converted into round-shaped grains. The estimated band gap energy of Fe2O3 films varies from 2.02 to 2.15 eV with respect to quantities of spraying solution and it exhibits absorption in visible region. The photoelectrocatalytic degradation process shows better removal efficiency of organic compounds as compared to photocatalytic process for degradation of salicylic acid (SA) using large area (100 cm(2)) Fe2O3 photoelectrode under visible light illumination. Further, photoelectrocatalytic degradation process have been employed for degradation of colorant organic compound such as methyl orange (MO) dye.
机译：通过化学喷雾热解技术成功地合成了Fe2O3薄膜。研究了溶液量对光电化学（PEC），结构，形态学和光学性质的影响。在50mL溶液量下制备的薄膜显示在0.1M NaOH电解质中的最大光电化学性能。 X射线衍射研究表明，合成的Fe2O3薄膜是具有菱形晶体结构的多晶。 Fe2O3薄膜的表面形态表明，针状晶粒已经缓慢地转化成圆形晶粒。对于量的喷雾溶液的量，Fe2O3膜的估计带隙能量在2.02至2.15eV中变化，并且在可见区域中表现出吸收。与光催化工艺相比，光电催化剂降解方法显示出使用大面积（100cm（2））Fe2O3光电电极的光催化过程与光催化工艺相比使用大面积（100cm（2））Fe2O3光电电极。此外，已经采用光电催化降解方法用于着色剂有机化合物如甲基橙（Mo）染料的降解。

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