Degreased cotton (DC) was used as template and reducing agent to gently prepare DC-supported MnO2 nanoparticles (MnO2 NPs/DC) by in-situ redox reaction.The morphology and composition of MnO2 NPs/DC were characterized.Chemical oxygen demand (COD) was provided by simulating wastewater with bone glue.Leveraging the excellent adsorption and catalytic oxidation activities of MnO2 NPs/DC and the convenient operation performance of DC,the removal performance of MnO2 NPs/DC for COD was further explored.The experimental results showed that MnO2 NPs was dispersed evenly on the surface of DC fibers.The removal rate of COD by MnO2 NPs/DC could reach 64.03% in only 21 min by simple soaking and stirring at room temperature,and the removal rate could be improved by increasing the amount of material and soaking time.The kinetic model fitting results indicated that the removal process of COD by MnO2 NPs/DC was more consistent with the pseudo-second-order kinetic model.
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基金资助
2023年山西省高等学校科技创新项目(2023L337);太原工业学院国家级大学生创新创业训练计划(20231138)
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