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首页> 外文期刊>Advances in Environmental Technology >Synthesis, characterization and degradation activity of Methyl orange Azo dye using synthesized CuO/α-Fe2O3 nanocomposite
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Synthesis, characterization and degradation activity of Methyl orange Azo dye using synthesized CuO/α-Fe2O3 nanocomposite

机译：合成的CuO /α-Fe2O3纳米复合材料对甲基橙偶氮染料的合成，表征和降解活性

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This study investigated the photo-degradation of methyl orange (MO) as a type of azo dye using a CuO/α-Fe2O3 nanocomposite. A CuO/α-Fe2O3 powder with a crystalline size in the range of 27-49 nm was successfully prepared using simple co-precipitation along with a sonication method. The characterization of the synthesized sample was done via XRD, FE-SEM, EDS, FTIR and DRS analyses. The Tauc equation revealed that the band gap of the nano composite in the direct mood was 2.05 ev, which is in the visible light range. The effect of operating factors containing dye concentration, photocatalyst dosage and pH on dye degradation efficiency was measured. Response Surface Method (RSM) was employed to specify the parameter effects. The photocatalytic activity of the CuO/α-Fe2O3 nanocomposite was evaluated by degradation of MO under visible light irradiation. The results showed that the pH value played a very effective role in the dye degradation process efficiency. Also, the photocatalytic degradation of MO obtained was equal to 88.47% in the optimal values.
机译：这项研究调查了使用CuO /α-Fe2O3纳米复合材料对作为一种偶氮染料的甲基橙（MO）的光降解。使用简单的共沉淀和超声处理方法成功制备了晶体尺寸在27-49 nm范围内的CuO /α-Fe2O3粉末。通过XRD，FE-SEM，EDS，FTIR和DRS分析完成了合成样品的表征。 Tauc方程显示，纳米复合材料在直接气氛中的带隙为2.05 ev，在可见光范围内。测量了包括染料浓度，光催化剂用量和pH值在内的操作因素对染料降解效率的影响。使用响应面法（RSM）来指定参数效果。通过在可见光照射下MO的降解来评估CuO /α-Fe2O3纳米复合材料的光催化活性。结果表明，pH值对染料降解过程的效率起着非常有效的作用。另外，获得的MO的光催化降解的最佳值等于88.47％。

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