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Advanced Treatment of Papermaking Wastewater by Photocatalysis with MoS2/g-C3N4 Nano-composite Catalyst |
Received:June 28, 2021 |
DOI:10.11980/j.issn.0254-508X.2021.10.009 |
Key Words:MoS2/g-C3N4 photocatalytic papermaking wastewater advanced treatment |
Fund Project:四川省水利厅科研项目《改性田螺壳生物炭对水中三氯生(TCS)的吸附性能及机理研究》(SKY2019-05)。 |
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Abstract:The MoS2/g-C3N4 nano-composite catalyst was prepared via combining MoS2 and g-C3N4 by N-methy1-2-pyrrolidone. The prepared nano-composite catalyst was characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), photoluminescence spectroscopy (PL) and scanning electron microscopy(SEM). The nano-composite catalyst were used to advanced treatment by photocatalysis of papermaking wastewater. The results showed that a few MoS2 combined with g-C3N4 could improve the photocatalytic activity of nano-composite catalyst remarkably. The removal efficiency of CODCr and chroma in papermaking wastewater could reach 63.4% and 83.2%,respectively, when react time was 180 min, pH value was 5, dosage of 1.5% MoS2/g-C3N4 was 2 g/L. The enhanced photocatalytic activity of MoS2/g-C3N4 was probably due to the matched band structure between MoS2 and g-C3N4, which could decrease the recombination rate of photo-generated electron and hole to improve the photocatalytic activity of MoS2/g-C3N4 catalyst. |
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