酞菁铁嵌入γ-环糊精MOF衍生的氧还原催化剂的制备及性能研究

来源 :The First Asian Conference on Porphyrins, Phthalocyanines an | 被引量 : 0次 | 上传用户：yueyinxiangzhu

【摘要】

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【作者】

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徐大伟左霞

【机构】

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首都师范大学化学系,北京,100048

【出处】

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The First Asian Conference on Porphyrins, Phthalocyanines an

【发表日期】

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2019年3期

【关键词】

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γ-环糊精 MOF 酞菁铁氧还原反应

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　　金属酞菁配合物(MPc)具有高度共轭π体系和金属活性中心，在氧还原(ORR)方面表现出优异的电催化性能.但由于其易聚集，导电性差等原因阻碍了它在工业上的大规模应用.因此设计高分散单原子Fe-N基催化剂迫在眉睫.本文设计了一种环糊精，尿素与酞菁铁通过包合络合进行掺杂的方法.然后将其热解成Fe-N-C催化剂，由于主体-客体在分子水平上的限制，在热解过程中可以有效地分离嵌入γ-CD-MOF中的Fe中心，以制备锚定在碳基质上的原子分散的Fe-N-C部分.通过循环伏安法(CV)观察到该催化剂峰电位为0.7926 V(vs.RHE)，通过线性扫描伏安法(LSV)观察到该催化剂起始电位为0.9465 V(vs.RHE)，半波电位为0.7873 V(vs.RHE)，结果显示该复合材料具有优异的氧还原性能.

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酞菁铁嵌入γ-环糊精MOF衍生的氧还原催化剂的制备及性能研究

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