التفاصيل البيبلوغرافية
| العنوان: |
Structural Reconstruction of Ce-MOF with Active Sites for Efficient Electrocatalytic N 2 Reduction |
| المؤلفون: |
Peixin Liu (475955), Peng Jing (1272780), Xuan Xu (781842), Baocang Liu (1780762), Jun Zhang (48506) |
| سنة النشر: |
2021 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Biophysics, Biochemistry, Medicine, Biotechnology, Evolutionary Biology, Space Science, Environmental Sciences not elsewhere classified, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, supporting structure formed, supporting structure could, provided new insight, oxygen vacancies embedded, copper mesh substrate, 83 μg h, 2 v versus, 3 , 2 , reversible hydrogen electrode, efficient electrocatalytic n, electrocatalytic process, − 0, work demonstrated, structural transformation, structural reconstruction, structural characterizations, situ growth, rational design, promising electrocatalysts, promising alternative |
| الوصف: |
The electrochemical synthesis of ammonia from N 2 under mild conditions is a promising alternative to the energy-consuming Haber–Bosch process. Metal–organic frameworks (MOFs) are promising electrocatalysts for the N 2 reduction reaction, but most of them are active for the undesirable and competitive hydrogen evolution reaction. Herein, we developed a facile strategy to grow a Ce-MOF on copper mesh substrate. The Ce-MOF with a self-supporting structure could be directly used as an electrode for the N 2 reduction reaction, demonstrating highly efficient electrocatalytic performance with an NH 3 yield of 14.83 μg h –1 cm –2 and a Faradaic efficiency of 10.81% at −0.2 V versus a reversible hydrogen electrode. Structural characterizations of Ce-MOF after electrocatalysis revealed that Ce-MOF as precatalyst underwent structural reconstruction at negative potential, forming catalytically active CeO 2 with oxygen vacancies embedded in the amorphous Ce-MOF. In addition, the self-supporting structure formed by in situ growth of Ce-MOF on porous and conductive cooper mesh endowed the electrocatalyst with enhanced stability, conductivity, and mass transport. This work demonstrated the structural transformation of Ce-MOF during the electrocatalytic process and provided new insight for the rational design of MOF-based electrocatalysts. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| العلاقة: |
https://figshare.com/articles/journal_contribution/Structural_Reconstruction_of_Ce-MOF_with_Active_Sites_for_Efficient_Electrocatalytic_N_sub_2_sub_Reduction/16878766Test |
| DOI: |
10.1021/acsaem.1c01656.s001 |
| الإتاحة: |
https://doi.org/10.1021/acsaem.1c01656.s001Test |
| حقوق: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.EE71D5D8 |
| قاعدة البيانات: |
BASE |
