普鲁士蓝衍生制得的C-Co活化过一硫酸盐处理亚甲基蓝废水的研究

doi:10.19741/j.issn.1673-4831.2019.0816

Abstract

Abstract: A Prussian blue derived C-Co catalyst was synthesized and used to activate peroxymonosulfate (PMS) for the degradation of methylene blue. The C-Co catalyst exhibited higher catalytic performance than that of Co₃O₄, reaching degradation rate of 90.0% for 30 mg·L^-1 methylene blue in 40 minutes. The reaction process was fitted by the pseudo-second order kinetic model, and the reaction rate constant was 1.57×10³ L·mol^-1·min^-1. The effect of temperature, pH, PMS concentration and coexisting ions on methylene blue degradation rates were also investigated during the activation of PMS by C-Co. The reactive radicals in the reaction were further explored by free radical trapping experiments. The results demonstrate that the singlet oxygen produced by PMS activation played an important role in methylene blue degradation. Moreover, C-Co had a good reusability, keeping a high degradation rate after having been reused for three times.

Key words: Co Prussian blue analogues, C-Co catalyst, peroxymonosulfate, singlet oxygen

CLC Number:

TANG Rong, MAO Su-nan. Preparation of C-Co Derived From Co Prussian Blue Analogues as an Activator of Peroxymonosulfate for the Degradation of Methylene Blue[J]. Journal of Ecology and Rural Environment, 2020, 36(6): 811-818.

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Preparation of C-Co Derived From Co Prussian Blue Analogues as an Activator of Peroxymonosulfate for the Degradation of Methylene Blue

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