التفاصيل البيبلوغرافية
| العنوان: |
A pillar-layered Ni2P–Ni5P4–CoP array derived from a metal–organic framework as a bifunctional catalyst for efficient overall water splitting. |
| المؤلفون: |
Ni, Qihang, Zhu, Zixian, Wang, Yan, Jiang, Chengyu, Wang, Min, Zhang, Xiang |
| المصدر: |
Dalton Transactions: An International Journal of Inorganic Chemistry; 5/28/2024, Vol. 53 Issue 20, p8732-8739, 8p |
| مصطلحات موضوعية: |
METAL-organic frameworks, OXYGEN evolution reactions, HYDROGEN evolution reactions, TRANSITION metals, SUBSTRATES (Materials science), CATALYSTS, PHOSPHORUS in water |
| مستخلص: |
Interfacial engineering emerges as a potent strategy for regulating the catalytic reactivity of metal phosphides. Developing a facile and cost-effective method to construct bifunctional metal phosphides for highly efficient electrochemical overall water splitting remains an essential and challenging issue. Here, a multiphase transition metal phosphide is constructed through the direct phosphorization of a Ni–Co metal–organic framework grown on nickel foam (Ni–Co-MOF/NF), which is prepared by utilizing nickel foam as conductive substrate and nickel source. The resulting transition metal phosphide manifests a pillar-layered morphology, wherein CoP, Ni2P, and Ni5P4 nanoparticles are embedded within each carbon sheet and these carbon sheets assemble into a pillar-shaped structure on the nickel foam (Ni2P–Ni5P4–CoP–C/NF). The heterogeneous Ni2P-Ni5P4–CoP–C/NF with multiple interfaces serves as a highly efficient bifunctional electrocatalyst with overpotentials of −100 mV and 293 mV in the hydrogen evolution reaction and oxygen evolution reaction, respectively, at 50 mA cm−2 in alkaline media. This superior catalytic performance should mainly be ascribed to its enriched active centers and multiphase synergy. When directly applied for alkaline overall water splitting, the Ni2P–Ni5P4–CoP–C/NF couple demonstrates satisfactory activity (1.55 V @10 mA cm−2) along with sustained durability over 18 hours. This method brings fresh enlightenment to the economical and controllable preparation of multi-metal phosphides for energy conversion. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
