化工新型材料

化工新型材料 ›› 2019, Vol. 47 ›› Issue (10) : 177-179.

科学研究

Mn-TiO₂粉体的制备及催化降解孔雀石绿废水的研究

作者信息 +

Study on preparation of Mn-TiO₂ powder catalyst and degradation of malachite green wastewater

Li Zhao¹, Cao Jing¹, Wang Yongfeng¹, Liu Wei²

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文章历史 +

Received		Published
2019-03-29		2019-10-20
Issue Date	Revised Date
2019-11-09	2019-03-29

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摘要

采用溶胶-凝胶法制备了纳米Mn-TiO₂粉体,通过X射线衍射(XRD)和扫描电镜(SEM)对其结构和形貌进行表征,研究了Mn-TiO₂粉体对孔雀石绿染料废水的光催化降解性能。探讨了孔雀石绿初始浓度、Mn-TiO₂催化剂投加量、体系pH等条件对催化效果的影响。结果表明:溶胶-凝胶法合成的Mn-TiO₂粉体为锐钛矿型结构,物相纯净,当孔雀石绿初始浓度为10mg/L,Mn-TiO₂催化剂添加量为1.0g/L,pH=7.0时,紫外光照射120min后Mn-TiO₂粉体对孔雀石绿的降解率可达87%。

Abstract

The Mn-TiO₂ powders were prepared by sol-gel method and characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM),including the structure,morphology and its catalytic activity for oxidation of malachite green.Under the same conditions,the influence of catalyst amount,the addition amount and pH was examined.The results shown that the Mn-TiO₂ prepared by sol-gel method was anatase structure and pure phase,and the rate of degradation reached 87% when the catalyst amount was 10mg/L,addition amount was 1.0g/L,pH=7.0.

关键词

Mn-TiO₂ / 溶胶-凝胶法 / 催化降解 / 孔雀石绿

Key words

Mn-TiO₂ / sol-gel method / degradation / malachite green

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Mn-TiO₂粉体的制备及催化降解孔雀石绿废水的研究[J]. 化工新型材料, 2019, 47(10): 177-179 DOI:

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参考文献

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