| CHINESE MATERIALS CONFERENCE — ENVIRONMENTAL ENGNEERING MATERIALS |
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| Preparation and Application of Catalytic Material (Co3O4/ACF) for Peroxymonosulfate |
| YANG Feng, YANG Shuyi, WEI Zifei, WANG Lilin
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| Provincial Key Laboratory of Agricultural Environmental Engineering, College of Environmental Sciences,Sichuan Agricultural University, Chengdu 611130; |
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Abstract Co3O4 nanoparticles were loaded on activated carbon fiber (ACF) by solvothermal method and hydrothermal met-hod. The ratios of Co2+ to ACF and reaction temperature were considered during preparation. 18 products (Co3O4/ACF) were prepared and applied in catalyzing peroxymonosulfate in order to degrade OrangeⅡ. X-ray diffraction and scanning electron microscope were used to characterize the composite materials. It was found that the material prepared by hydrothermal method showed good catalytic property, and it could degrade 100 mg/L OrangeⅡin 3 min. Co3O4 particles could load better on ACF surface by hydrothermal method. During preparation, the ratio of Co2+ to ACF had little effect on catalytic property of the product and the reaction temperature hardly had any effect on catalytic property of the product prepared by hydrothermal method. When heated at 320 ℃, Co3O4/ACF showed good catalytic property and it could keep unbroken. The loading amount of Co on ACF was around 17.2 mg/g. Co3O4/ACF prepared by hydrothermal method was better in recycling. After four cycles, the degradation efficiency of OrangeⅡ could still reach 99% within 28 min. The high degradation efficiency was the result of both Co3O4/ACF and dissolved Co2+. Orthogonal expe-riment showed degradation time played the most important part in degradation efficiency and the concentration of PMS followed. The amount of Co3O4/ACF had little effect on degradation efficiency. Thus, in the application of Co3O4/ACF in orangeⅡdegradation, sufficient reaction time is necessary. And the concentration of PMS should be considered as well.
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Published: 22 November 2018
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2018, Vol. 32 
