Ultrafine platinum nanoparticles confined in a covalent organic framework for enhanced enzyme-mimetic and electrocatalytic performances.
Ultrafine platinum nanoparticles confined in a covalent organic framework for enhanced enzyme-mimetic and electrocatalytic performances.
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超细铂纳米粒子被限制在共价有机框架中，以增强酶模拟和电催化性能。
DOI：
10.1039/d1nr05336a
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发表时间：
2021-11
期刊：
影响因子：
6.7
通讯作者：
Wang Yi
中科院分区：
文献类型：
--
作者：
Zhang Li;Han Chaoqin;Zhang Pu;Fu Wensheng;Nie Yao;Wang Yi
设计并合成了均匀分散在共价有机骨架中的超细铂纳米粒子(Pt/COF)，它在类酶催化和电催化中都表现出了良好的催化活性。由于COF基质中气孔的空间限制效应，原位生长的铂纳米颗粒的尺寸仅为2.44 nm，且尺寸分布较窄。由于结构上的优势，铂/COF催化剂表现出比无负载的铂纳米颗粒和两种组分的物理混合物更好的过氧化物酶/类氧化酶活性。基于铂/COF对过氧化物酶底物催化氧化的抑制作用，建立了一种灵敏的单宁酸检测比色方法。此外，在甲醇氧化反应(MOR)中，Pt/COF催化剂的电催化活性和稳定性也优于商品化的Pt/C催化剂。这项工作展示了CoF负载材料在模拟酶催化和电催化方面的潜在应用前景。
Uniformly dispersed ultrafine platinum nanoparticles confined in a covalent organic framework (Pt/COF) have been designed and synthesized, which exhibit good catalytic activities in both enzyme-like and electrocatalytic catalysis. Benefiting from the space-confinement effect of pores in the COF matrix, the size of in situ grown Pt nanoparticles is as small as 2.44 nm with a narrow size distribution. Owing to the structure superiority, the Pt/COF catalyst exhibits much better peroxidase/oxidase-like activity than unsupported Pt nanoparticles and a physical mixture of the two components. Based on the inhibition of catalytic oxidation of the peroxidase substrate by Pt/COF, a sensitive colorimetric method is established for tannic acid sensing. Furthermore, the Pt/COF catalyst also exhibits better electrocatalytic activity and stability than commercial Pt/C catalyst towards the methanol oxidation reaction (MOR). This work demonstrates the promising application potential of COF-supported materials in both enzyme-mimetic and electrocatalytic catalysis.
影响因子：
3
作者：
Du, YK;Yang, P;Jiang, L
通讯作者：
Jiang, L