期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 24, 期 18, 页码 10765-10774出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1cp05699a
关键词
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资金
- Council of Scientific and Industrial Research (CSIR), New Delhi, India
- JNCASR
- DST, SERB
- J C Bose National Fellowship, Government of India
Using B atoms in Tp-bpy-COF for photoelectrocatalytic nitrogen reduction to produce ammonia shows high activity and potential for designing new reactions on COFs.
The production of ammonia in a sustainable cost-effective manner and ambient conditions is a very challenging task. Photo-/electrocatalytic nitrogen reduction (NRR) is a convenient way to produce NH3 for industrial applications. In this work, anchoring B atoms in Tp-bpy-COF is shown to effectively reduce N-2 to NH3. By employing density functional theory, we demonstrated that N-2 can be efficiently activated on the B center due to the synergistic effect of B-N. Meanwhile, we found that the NRR happens predominantly by the alternating path with a small limiting potential of 0.13 V. Moreover, the suitable band edge positions and broad visible light absorption zone result in B@Tp-bpy-COF acting as a promising photocatalyst. Our proposed catalytic system exhibits favorable formation energy and excellent structural stability during AIMD simulations, which suggest the feasibility of experimental synthesis. The system turns out to be highly selective toward the NRR compared to other competitive reactions. These findings may pave a new way for designing SACs on COFs for N-2 fixation with high activity, which may also apply to other reactions.
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