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Preparation of Nano MnOx-loaded Paper via in Situ Synthesis and Its Performance for Formaldehyde Removal |
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DOI:10.11980/j.issn.0254-508X.2018.07.003 |
Key Words:formaldehyde nano MnOx in situ synthesis catalytic oxidation visible light photocatalytic oxidation |
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Abstract:Nano MnOx-loaded paper was prepared via in situ synthesis process,and its performance for formaldehyde removal was studied.The performance for formaldehyde removal of nano MnOx-loaded paper had some correlation with the deposition ratio of nano MnOx particles. When the concentration of potassium permanganate (KMnO4) was 0.1mol/L, the volume of absolute ethanol was 60 mL, reaction temperature was 25 ℃ and reaction time was 2 h, the nano MnOx-loaded paper with the optimal performance for formaldehyde removal could be prepared. SEM observation indicated that nano MnOx particles were deposited on the surface of pulp fibers. The FT-IR results showed that the in situ deposition of nano MnOx particles did not change the chemical structure of cellulose. The XPS analysis further revealed the generation of MnOx . Formaldehyde was removed by the nano MnOx-loaded paper mainly via catalytic oxidation and partly via visible light photocatalytic oxidation.Formaldehyde could be effectively removed by the nano MnOx-loaded paper in dark environment. |
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