Cu/Cu2O Nanoparticles Supported on Vertically ZIF-L-Coated Nitrogen-Doped Graphene Nanosheets for Electroreduction of CO2 to Ethanol,ACS Applied Energy Materials

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Cu/Cu2O Nanoparticles Supported on Vertically ZIF-L-Coated Nitrogen-Doped Graphene Nanosheets for Electroreduction of CO2 to Ethanol
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2019-12-20 00:00:00 , DOI: 10.1021/acsanm.9b01935
Yangyang Zhang ₁ , Kai Li ₁ , Miaomiao Chen ₁ , Jing Wang ₁ , Jindun Liu ₁ , Yatao Zhang _{1,

2}

Affiliation

Metal–organic framework (MOF)-derived nanomaterials provide outstanding catalytic activities for CO₂ electroreduction due to their large surface area, tunable geometric structures, and controllable pore size. Herein, we develop a Cu/Cu₂O nanocomposite loaded on the surface of carbon derived from direct carbonization of two-dimensional cross-like zeolitic imidazolate framework-L coated vertically on graphene oxide (Cu GNC-VL). The as-synthesized catalyst presented an excellent faradaic efficiency of 70.52% and current density of 10.4 mA cm^–2 at −0.87 V versus the reversible hydrogen electrode, which benefits from the synergy between CO₂ asymmetric chemical adsorption on Cu(111) and favorable kinetics and thermodynamics of C–C coupling on Cu₂O(111). This study presents a strategy for the rational design and multiple-pathway modulation of the geometry structure of MOF-derived catalysts.

中文翻译：

垂直ZIF-L涂层氮掺杂石墨烯纳米片上负载的Cu / Cu ₂ O纳米颗粒用于将CO ₂电还原为乙醇

源自金属-有机骨架（MOF）的纳米材料因其较大的表面积，可调整的几何结构和可控制的孔径而为CO ₂电还原提供了出色的催化活性。在本文中，我们开发了一种负载在碳表面的Cu / Cu ₂ O纳米复合材料，该碳源是由垂直涂覆在氧化石墨烯（Cu GNC-VL）上的二维十字形沸石咪唑酸酯骨架L直接碳化而成的。与可逆氢电极相比，合成后的催化剂在-0.87 V时具有70.52％的出色的法拉第效率和10.4 mA cm ^–2的电流密度，这得益于可逆氢电极，这得益于CO ₂之间的协同作用Cu（111）上的不对称化学吸附以及Cu ₂ O（111）上C–C耦合的良好动力学和热力学。这项研究提出了MOF衍生的催化剂的几何结构的合理设计和多路径调节的策略。

更新日期：2019-12-20

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