Construction of Hierarchically Porous Nanoparticles@Metal–Organic Frameworks Composites by Inherent Defects for the Enhancement of Catalytic Efficiency,Advanced Materials

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Construction of Hierarchically Porous Nanoparticles@Metal–Organic Frameworks Composites by Inherent Defects for the Enhancement of Catalytic Efficiency
Advanced Materials ( IF 27.4 ) Pub Date : 2018-10-10 , DOI: 10.1002/adma.201803263
Fanchen Meng ₁ , Suoying Zhang _{1,

2} , Lu Ma ₂ , Weina Zhang ₁ , Matthew Li _{3,

4} , Tianpin Wu ₂ , Hang Li ₅ , Tao Zhang _{1,

4} , Xiaohua Lu ₅ , Fengwei Huo ₁ , Jun Lu ₄

Affiliation

Nanoparticles@metal–organic frameworks (MOFs) composites have attracted considerable attention in recent years due to the prominent selective catalytic activity. However, it is highly desirable to develop a simple and universal way to settle the trade‐off between the catalytic efficiency and selectivity. Herein, by employing the thermal instability of inherent defects, hierarchically porous Pt@UiO‐66‐NH₂, Pt@UiO‐66, Pt@ZIF‐8, and Au@ZIF‐8 are successfully constructed after annealing at an appropriate temperature, respectively. The generated mesopores in the MOFs can be located around the external nanoparticle to retain the MOF shell for catalytic selectivity. Finally, when tested in olefin hydrogenation, Pt@UiO‐66‐NH₂ shows significantly improved catalytic rate and enhanced dynamic selectivity.

中文翻译：

通过固有缺陷构建多层多孔纳米颗粒@金属-有机骨架复合材料，以提高催化效率

纳米粒子@金属-有机骨架（MOFs）复合材料近年来由于其突出的选择性催化活性而备受关注。但是，迫切需要开发一种简单通用的方法来解决催化效率和选择性之间的折衷问题。在此，通过利用固有缺陷的热不稳定性，在适当的温度下退火后，成功地构造了多孔Pt @ UiO-66-NH ₂，Pt @ UiO-66，Pt @ ZIF-8和Au @ ZIF-8，分别。MOF中产生的中孔可位于外部纳米粒子周围，以保留MOF壳层以实现催化选择性。最后，在烯烃加氢测试中，Pt @ UiO-66-NH ₂ 显示出显着提高的催化速率和增强的动态选择性。

更新日期：2018-10-10

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