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发表时间：2022-10-02

发表刊物：Modern Chemical Industry

卷号：41

期号：3

页面范围：190-195

ISSN号：0253-4320

关键字："Fe-Ce /g-C_3N_4; Fe-Ce /g-C_3N_4; organics degradation; Fenton reaction; visible light; synergistic effect"

CN号：11-2172/TQ

摘要：A series of Fe-Ce /g-C_3N_4 composites with different ratios of Fe /Ce are prepared by calcining the mixture of Fe-based metal organic framework(Fe-MOF),Ce-based metal organic framework(Ce-MOF)and melamine.The composite exhibits excellent Fenton catalytic activity and stability for degrading high concentration organic pollutants.It is shown via experiments that the ratio of Fe /Ce has important effect on Fenton reaction activity.The catalyst with a Fe /Ce ratio of 3∶ 1 shows the best catalytic activity,which can remove 100% of methylene blue(200 mg·L~(-1))within 50 min.If visible light is used in the reaction system,the reaction time will be further shortened to 40 min.The excellent Fenton reaction performance of the catalyst can be attributed to:(1)The in situ generated g-C_3N_4 as support can stabilize well and disperse Fe and Ce cations;(2)The synergistic effect between Fe and Ce promotes the regeneration of Fe~(2+),leading to the production of more hydroxyl radicals to degrade organic pollutants.

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