Simultaneous catalytic oxidation of Hg0 and AsH3 over Fe–Ce co-doped TiO2 catalyst under low temperature and reducing atmosphere

The rapid progress of modern industry not only brings convenience to people’s lives, but also brings negative effects. Industrial development produces a large amount of waste metal, which brings harm to the environment and human health. Carbon nitride (g-C3N4) was successfully prepared using the thermal-polymerization method and petal-like g-C3N4 (CA-g-C3N4) was impregnated with citric acid (CA). Compared with g-C3N4, CA-g-C3N4 showed extremely high photocatalytic activity because the petal-like g-C3N4 (CA-g-C3N4) had a larger specific surface area, which increased the active sites on the surface of the photocatalyst and improved the photocatalytic activity. After citric acid treatment, the removal of hexavalent chromium (Cr(VI)) by g-C3N4 increased from 48% to 93%. The photocatalytic materials were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET) and UV-vis diffuse reflectance spectra (UV-vis). In summary, this study confirmed that citric acid can improve the photocatalytic activity of g-C3N4 by increasing its specific surface area and the active site of the photocatalytic material so as to achieve the purpose of removing hexavalent chromium from water.

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Simultaneous catalytic oxidation of Hg⁰ and AsH₃ over Fe–Ce co-doped TiO₂ catalyst under low temperature and reducing atmosphere

Abstract: Fe5Ce5Ti catalytic material is reported for the removal of Hg0 and AsH3 from yellow phosphorus flue gas by catalytic oxidation. The mechanism of the reaction is inferred from characterization analysis.

Cited by 2 publications

References 51 publications

Exploring the efficient catalytic decomposition behavior of AsH3 over HZSM-5 molecular sieve based on in situ DRIFTS characterization

Exploring the efficient catalytic decomposition behavior of AsH3 over HZSM-5 molecular sieve based on in situ DRIFTS characterization

Petal-like g-C3N4 Enhances the Photocatalyst Removal of Hexavalent Chromium

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