Cu2O Nanoparticles Wrapped by N-Doped Carbon Nanotubes for Efficient Electroreduction of CO2 to C2 Products,ACS Applied Materials & Interfaces

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Cu2O Nanoparticles Wrapped by N-Doped Carbon Nanotubes for Efficient Electroreduction of CO2 to C2 Products
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-07-21 , DOI: 10.1021/acsami.3c04800
Jilin Liu _{1,

2,

3} , Kai Yu _{2,

3} , Qianlong Zhu _{2,

3} , Zhiyuan Qiao _{2,

3} , Hong Zhang _{2,

3} , Jie Jiang _{1,

2,

3}

Affiliation

Electroreduction of carbon dioxide (CO₂) to C₂ products (ethylene and ethanol) using efficient catalysts is a feasible approach to alleviate the climate crisis. Cuprous oxide nanoparticles (Cu₂O NPs) are a promising catalyst for C₂ production but suffer from inherent selectivity and durability. To address this challenge, a Cu₂O NPs-nitrogen-doped carbon nanotube (Cu₂O NPs-NCNT) composite was prepared with carbon nanotubes (CNTs), Cu₂O NPs, and phthalocyanine (Pc). The results indicate that Cu₂O NPs-NCNT has excellent Faradic efficiency of C₂ products (77.61%) at −1.1 V vs RHE, which is 103.43% higher than that of Cu₂O NPs. In the potentiostatic electrolysis combined with Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) measurements, Cu₂O NPs-NCNT exhibited structural and catalytic current stability over 10 h. Finally, density functional theory calculations combined with XPS demonstrated that the NCNT in Cu₂O NPs-NCNT can selectively absorb CO₂ through specific N–CO₂ interactions. Our work provides a unique strategy to promote the selectivity of Cu₂O NPs for C₂ production by introducing N-doped linear carbon materials to fabricate composite.

中文翻译：

N掺杂碳纳米管包裹的 Cu2O 纳米颗粒可有效将 CO2 电还原为 C2 产品

使用高效催化剂将二氧化碳（CO ₂）电还原为C ₂产品（乙烯和乙醇）是缓解气候危机的可行方法。氧化亚铜纳米颗粒（Cu ₂ O NPs）是一种很有前景的C ₂生产催化剂，但其固有的选择性和耐久性受到限制。为了应对这一挑战，我们用碳纳米管（CNT）、Cu ₂ O NPs和酞菁（Pc）制备了Cu 2 O NPs-氮掺杂碳纳米管（Cu 2 O NPs-NCNT）复合_材料_。结果表明，Cu ₂ O NPs-NCNT在-1.1 V vs RHE下具有优异的C ₂产物法拉第效率（77.61%），比Cu ₂ O NPs高103.43%。在恒电位电解结合拉曼光谱和X射线光电子能谱（XPS）测量中，Cu ₂ O NPs-NCNT表现出超过10小时的结构和催化电流稳定性。最后，密度泛函理论计算结合XPS证明Cu ₂ O NPs-NCNT中的NCNT可以通过特定的N-CO _{2相互作用选择性地吸收CO}₂。我们的工作提供了一种独特的策略，通过引入N掺杂线性碳材料来制造复合材料，以提高Cu ₂ O NPs用于C ₂生产的选择性。

更新日期：2023-07-21

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