Dynamic Reconstruction of Two‐Dimensional Defective Bi Nanosheets for Efficient Electrocatalytic Urea Synthesis

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(16)

Published: Feb. 22, 2024

Abstract Abstract:Catalyst surface dynamics drive the generation of active species for electrocatalytic reactions. Yet, understanding dominant site formation and reaction mechanisms is limited. In this study, we thoroughly investigate dynamic reconstruction two‐dimensional defective Bi nanosheets from exfoliated 2 Se 3 under electrochemical CO nitrate (NO − ) reduction conditions. The ultrathin obtained by NaBH 4 ‐assisted cryo‐mediated liquid‐phase exfoliation are more easily reduced reconstructed to with high‐density grain boundaries (GBs; GB‐rich Bi). catalyst affords a remarkable yield rate 4.6 mmol h −1 mg cat. Faradaic efficiency 32 % urea production at −0.40 V vs. RHE. Notably, 8.2 times higher than those low‐GB bulk catalysts, respectively. Theoretical analysis demonstrates that GB sites significantly reduce *CO *NH intermediate energy C−N coupling barrier, enabling selective electrosynthesis on catalyst. This work will trigger further research into structure‐activity interplay in processes using situ techniques.

Language: Английский

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Built-in Electric Field Promotes Interfacial Adsorption and Activation of CO₂ for C₁ Products over a Wide Potential Window

ACS Nano, Journal Year: 2024, Volume and Issue: 18(13), P. 9678 - 9687

Published: March 24, 2024

The unsatisfactory adsorption and activation of CO2 suppress electrochemical reduction over a wide potential window. Herein, the built-in electric field (BIEF) at CeO2/In2O3 n–n heterostructure realizes C1 (CO HCOO–) selectivity 90.0% in broad range potentials from −0.7 to −1.1 V with maximum value 98.7 ± 0.3% −0.8 V. In addition, current density (−1.1 V) BIEF is about 2.0- 3.2-fold that In2O3 physically mixed sample, respectively. experimental theoretical calculation results indicate introduction CeO2 triggered charge redistribution formed interfaces, which enhanced interfacial low overpotentials. Furthermore, promoting effect was also extended CeO2/In2S3. This work gives deep understanding engineering for highly efficient electroreduction

Language: Английский

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Challenges and opportunities of atomic-scales reactive sites in thriving electrochemical CO2 reduction reaction

Nano Today, Journal Year: 2024, Volume and Issue: 55, P. 102152 - 102152

Published: Jan. 13, 2024

Language: Английский

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Advances and challenges in single-site catalysts towards electrochemical CO₂ methanation

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(11), P. 4812 - 4833

Published: Jan. 1, 2023

In this review, we systematically summarizes the activity descriptors of CO 2 methanation, recent advances SSCs for electrocatalytic and in situ characterizations used tracking structure change during RR.

Language: Английский

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Bi-Eu bimetallic catalysts enabling ultrastable electroreduction of CO2 with a ∼ 100% formate Faradaic efficiency

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 467, P. 143531 - 143531

Published: May 15, 2023

Language: Английский

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Revealing the Intrinsic Restructuring of Bi₂O₃ Nanoparticles into Bi Nanosheets during Electrochemical CO₂ Reduction

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(9), P. 11552 - 11560

Published: Feb. 26, 2024

Bismuth is a catalyst material that selectively produces formate during the electrochemical reduction of CO

Language: Английский

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Enhanced electrocatalytic CO2 reduction to formic acid using nanocomposites of In2O3@C with graphene

Nano Research, Journal Year: 2024, Volume and Issue: 17(6), P. 5031 - 5039

Published: March 8, 2024

Language: Английский

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Advances in the optical and electronic properties and applications of bismuth-based semiconductor materials

Journal of Materials Chemistry C, Journal Year: 2023, Volume and Issue: 12(5), P. 1609 - 1624

Published: Dec. 22, 2023

In recent years, bismuth-based semiconductors have become a research hotspot in the new semiconductor field due to their unique optical and electronic properties.

Language: Английский

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Advances in the Stability of Catalysts for Electroreduction of CO₂ to Formic Acid

ChemSusChem, Journal Year: 2024, Volume and Issue: 17(14)

Published: Feb. 27, 2024

Abstract The electroreduction of CO 2 to high‐value products is a promising approach for achieving carbon neutrality. Among these products, formic acid stands out as having the most potential industrialization due its optimal economic value in terms consumption and output. In recent years, Faraday efficiency from has reached 90~100 %. However, this high selectivity cannot be maintained extended periods under currents meet industrial requirements. This paper reviews excellent work perspective catalyst stability, summarizing discussing performance typical catalysts. Strategies preparing stable highly active catalysts are also briefly described. review may offer useful data reference valuable guidance future design long‐stability

Language: Английский

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Tuning strategies and electrolyzer design for Bi-based nanomaterials towards efficient CO2 reduction to formic acid

Chinese Journal of Structural Chemistry, Journal Year: 2024, Volume and Issue: 43(8), P. 100346 - 100346

Published: May 21, 2024

Language: Английский

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