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

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versity, Nanjing 210036, China; 2 School of Environmental and Biological Engineering, Nanjing University of Science
and Technology, Nanjing 210094, China)
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
唐 荣1① , 茅苏楠2 (1 江苏开放大学环境生态学院, 江苏 南京 210036; 2 南京理工大学环境与生物工程学院, 江
苏 南京 210094)
摘要: 利用普鲁士蓝为前驱体制备含钴碳催化剂 C-Co,并用于活化过一硫酸盐( PMS) 降解亚甲基蓝废水。 该
Key words: Co Prussian blue analogues; C-Co catalyst; peroxymonosulfate; singlet oxygen
近些年基于硫酸根自由基的高级氧化工艺
( SR -AOP) 在废水处理中引起了人们的广泛关注。
因硫酸根自由基的氧化还原电位 ( 2 5 ~ 3 1 V) 较
radation 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 dem⁃
onstrate that the singlet oxygen produced by PMS activation played an important role in methylene blue degradation. Moreo⁃
ver, C-Co had a good reusability, keeping a high degradation rate after having been reused for three times.
物种。 结果证明该 C-Co 催化剂活化 PMS 产生的单线态氧在降解亚甲基蓝过程中起主导作用。 此外,C-Co 催化
剂在该反应中表现出良好的稳定性,重复利用 3 次后仍然保持较高的降解效率。
关键词: Co 普鲁士蓝; C-Co 催化剂; 过一硫酸盐; 单线态氧
中图分类号: X52 文献标志码: A 文章编号: 1673-4831(2020)06-0811-08
生态与农村环境学报 2020, 36 (6) : 811-818
Journal of Ecology and Rural Environment
DOI: 10.19741 / j.issn.1673-4831.2019.0816
唐荣,茅苏楠.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[ J] .生态与农村环境学报,2020,36(6) :811-818.
C-Co 催化剂较 Co3 O4 表现出更高的催化 PMS 性能,反应 40 min 后 30 mg·L -1 亚甲基蓝的降解率达 90 0%。 该反
应过程符合二级反应动力学,反应速率常数达 1 57×103 L·mol -1 ·min -1 。 该研究还考察了温度、pH 值、PMS 浓度
和共存离子等对 C-Co 活化 PMS 降解亚甲基蓝的影响,并进一步通过自由基捕获实验探究了反应过程中的活性
Preparation of C -Co Derived From Co Prussian Blue Analogues as an Activator of ion of Methylene Blue. TANG Rong1① , MAO Su⁃nan2 (1 School of Environmental Ecology, Jiangsu Open Uni⁃
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 Co3 O4 , reaching deg⁃
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.
高 [1] ,高于羟基自由基电位(1 8 ~ 2 7 V) ,因而其氧
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