Catalytic ozone aqueous decomposition of methylene blue using composite metal oxides

2015 Global Conference on Polymer and Composite Materials

材料科学;化学

Liu, Xuan^1 ; Hou, Yongjiang^1 ; Guo, Jie^1 ; Wang, Yaquan^2 ; Zuo, Qian^1 ; Wang, Chunyu^1

Environmental Science and Engineering, Hebei University of Science and Technology, Shi Jiazhuang

050018, China^1

Chemical Engineering, Tianjin University, Tian Jin

30072, China^2

关键词: Calcination temperature;    Catalytic ozone;    Composite metal oxides;    Decolorization rates;    Experimental conditions;    Methylene Blue;    Total organic carbon removal;    X ray diffractometers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/87/1/012031/pdf
DOI  :  10.1088/1757-899X/87/1/012031

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

By using the method of co-precipitation, Fe-Mn, Al-Mn, Al-Mg composite metal oxides were prepared. Using X-ray diffractometer(XRD), the phases of catalysts synthesized were observed to be Mn3O4and Fe2O3. With the increase of the calcination temperature, Mn3O4was gradually transformed into Mn2O3. The experimental results show that: the best catalyst is the Fe-Mn composite metal oxide with the calcination temperature of 650 °C. In this experimental condition, when the ozone amount was 1.92mg/min, and the dosage of catalyst was 0.5g, the removal rate of methylene blue (MB) was the best. The decolorization rate can reach to 100%. Compared with the effect of ozonation alone, the total organic carbon removal rate increased from 29.19% up to 65.78% after adding catalysts.