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- W2891547048 abstract "This paper presents a study on the effect of preparation method on the structure and photocatalytic activities of BiOI and Bi5O7I photocatalysts for elemental mercury (Hg0) removal in a wet bubbling reactor. Two visible-light-driven BiOI photocatalysts (BiOI-HAc and BiOI-EG) via either glacial acetic acid (HAc) coprecipitation or ethylene glycol (EG) hydrothermal synthesis as well as their derivative samples (Bi5O7I-HAc and Bi5O7I-EG) were synthesized, respectively. The photocatalysts were characterized by N2 adsorption-desorption analysis, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV–vis diffuse reflectance spectra (DRS), photoelectrochemical measurement and electron spin resonance (ESR) techniques. The results showed that Bi5O7I-HAc and BiOI-EG exhibited superior Hg0 removal performances in comparison with BiOI-HAc and Bi5O7I-EG, and Bi5O7I-HAc photocatalyst possessed much better activity on SO2 resistance and wider reaction temperature scope than BiOI-EG. The enhancement in Hg0 removal efficiency can be attributed to the appearance of plenty of adsorbed oxygen, efficient photoinduced carrier separations and their special band gap structures. The photoexcited O2− and h+ played key roles in the process of Hg0 removal." @default.
- W2891547048 created "2018-09-27" @default.
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- W2891547048 date "2019-03-01" @default.
- W2891547048 modified "2023-10-14" @default.
- W2891547048 title "Effect of preparation method on the structure and photocatalytic performance of BiOI and Bi5O7I for Hg0 removal" @default.
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- W2891547048 doi "https://doi.org/10.1016/j.apr.2018.08.012" @default.
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