化工新型材料

化工新型材料 ›› 2019, Vol. 47 ›› Issue (2) : 197-201.

科学研究

α-SiW₁₁Cu/PANI/ZnO复合催化剂的制备及光催化降解孔雀石绿研究

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Preparation of α-SiW₁₁Cu/PANI/ZnO composite catalyst and the photocatalytic degradation of malachite green

Ma Ronghua¹, Zhang Jingrui¹, Liu Chuntao²

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文章历史 +

Received		Published
2017-09-16		2019-02-20
Issue Date	Revised Date
2019-03-18	2017-09-16

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摘要

以铜取代杂多酸盐α-SiW₁₁Cu为活性组分,制备了α-SiW₁₁Cu/聚苯胺(PANI)/ZnO三元复合催化剂,采用傅里叶变换红外光谱仪、紫外-可见分光光度计、X射线衍射仪、X射线光电子能谱仪和扫描电子显微镜表征了其结构,并以模拟污染物孔雀石绿的光催化降解评价了α-SiW₁₁Cu/PANI/ZnO的光催化性能。结果表明:在30W紫外灯照射下,当孔雀石绿溶液pH=3,孔雀石绿初始质量浓度为10mg/L,复合催化剂投加量为20mg/L,照射时间为200min时,脱色率可达83.78%。光催化降解孔雀石绿过程符合一级动力学方程,一级方程表观反应速率常数为0.00917min^-1。

Abstract

The ternary composite catalyst α-SiW₁₁Cu/PANI/ZnO was prepared and characterized by FT-IR,UV-Vis,XRD and SEM.The photocatalytic degradation of malachite green was selected as probe to evaluate the enhanced photocatalytic activity of as-synthesized α-SiW₁₁Cu/PANI/ZnO.Experimental results showed that the decoloration efficiency of malachite green was achieved 83.78% when 10mg/L of malachite green containing simulated solution at pH 3 was treated by 30W ultraviolet light with 20mg/L of α-SiW₁₁Cu/PANI/ZnO as catalyst.The kinetics of photodegradation of malachite green was satisfied by the pseudo-first-order equation,with a constant at 0.00917min^-1.

关键词

杂多酸 / 催化剂 / 聚苯胺 / 光催化降解 / 孔雀石绿

Key words

polyoxometalates / composite catalyst / polyaniline / photocatalytic degradation / malachite green

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α-SiW₁₁Cu/PANI/ZnO复合催化剂的制备及光催化降解孔雀石绿研究[J]. 化工新型材料, 2019, 47(2): 197-201 DOI:

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