Synthesis of a Boron–Imidazolate Framework Nanosheet with Dimer Copper Units for CO 2 Electroreduction to Ethylene
| Autor: | Qin-Long Hong, Wenjing Wang, Wei Zhou, Jian Zhang, Huabin Zhang, Ping Shao, Haixia Zhang, Lirong Zheng, Luocai Yi |
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| Rok vydání: | 2021 |
| Předmět: |
010405 organic chemistry
Dimer chemistry.chemical_element General Chemistry General Medicine 010402 general chemistry Electrocatalyst 01 natural sciences Combinatorial chemistry Copper Catalysis 0104 chemical sciences chemistry.chemical_compound chemistry Imidazolate Metal-organic framework Selectivity Nanosheet |
| Zdroj: | Angewandte Chemie. 133:16823-16828 |
| ISSN: | 1521-3757 0044-8249 |
| Popis: | Fundamental understanding of the dependence between the structure and composition on the electrochemical CO2 reduction reaction (CO2 RR) would guide the rational design of highly efficient and selective electrocatalysts. A major impediment to the deep reduction CO2 to multi-carbon products is the complexity of carbon-carbon bond coupling. The chemically well-defined catalysts with atomically dispersed dual-metal sites are required for these C-C coupling involved processes. Here, we developed a catalyst (BIF-102NSs) that features Cl- bridged dimer copper (Cu2 ) units, which delivers high catalytic activity and selectivity for C2 H4 . Mechanistic investigation verifies that neighboring Cu monomers not only perform as regulator for varying the reaction barrier, but also afford distinct reaction paths compared with isolated monomers, resulting in greatly improved electroreduction performance for CO2 . |
| Databáze: | OpenAIRE |
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