钴基双金属氧化物复合碳质材料活化过硫酸盐研究进展
王芮 , 成先雄 , 连军锋 , 刘鑫 , 唐佳华 , 姚荣
现代化工 ›› 2025, Vol. 45 ›› Issue (5) : 60 -65.
钴基双金属氧化物复合碳质材料活化过硫酸盐研究进展
Advances on cobalt-based bimetallic oxides compounding carbonaceous materials activated peroxysulfate
讨论了非均相钴基双金属氧化物协同活化过硫酸盐降解污染物性能,钴基双金属催化剂通过2种金属的协同作用,构建金属离子氧化还原循环系统,能够显著提升催化剂的活性,克服了单金属效率低下和不稳定的问题。探讨了钴基双金属氧化物复合碳质材料活化过硫酸盐性能,复合材料具有大比表面积和更多的含氧官能团,能够调控催化剂结构,提高电子转移速率,显著提高催化剂活性,同时减少钴的浸出,增强材料的重复使用性能。机理研究表明,针对不同污染物,自由基降解与非自由基降解发挥的主导作用不同,过渡金属通过活化过硫酸盐产生强自由基,碳基兼具自由基和非自由基降解途径。对钴基双金属氧化物复合碳质材料活化过硫酸盐未来研究方向进行了展望。
The performance of heterogeneous cobalt-based bimetallic oxides synergistically activated persulfates in the degradation of pollutants is expounded.Cobalt-based bimetallic catalysts construct a metal ion redox cycle system through the synergistic effect of two metals,which can significantly improve the activity of the catalysts,and avoid the slow efficiency and instability problems that single metal system has.The performance of cobalt-based bimetallic oxides compounded carbonaceous materials in activating persulfates is explored.The composite materials have a large specific surface area and more oxygen-containing functional groups,which can regulate the structure of catalyst,improve electron transfer rate,significantly improve the activity of catalyst,while reduce cobalt leaching,and enhance the materials’ reusability.Mechanism studies show that as for different pollutants,free radical degradation plays different dominant role from that non free radical degradation does.Transition metals activate persulfate to generate strong free radicals,while carbon radicals have both free radical and non free radical degradation pathways.A prospect for future research on the activation of persulfate by cobalt-based bimetallic oxides compounded carbon materials is given.
高级氧化 / 过硫酸盐 / 活化 / 碳质材料 / 钴基双金属氧化物
advanced oxidation / peroxysulfate / activation / carbonaceous materials / cobalt based bimetallic oxides
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国家自然科学基金青年科学基金项目(51808268)
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