Steering Geometric Reconstruction of Bismuth with Accelerated Dynamics for CO2 Electroreduction DOI
Xiaowen Wang, Yangyang Zhang,

Shao Wang

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(34)

Published: June 5, 2024

Abstract Bismuth‐based materials have emerged as promising catalysts in the electrocatalytic reduction of CO 2 to formate. However, reasons for reconstruction Bi‐based precursors form bismuth nanosheets are still puzzling, especially formation defective sites. Herein, we prepare with vacancy‐rich defects (V‐Bi NS) by rapidly reconstructing Bi 19 Cl 3 S 27 under negative potential. Theoretical analysis reveals that introduction chlorine induces generation intrinsic electric field precursor, thereby increasing electron transfer rate and further promoting metallization trivalent bismuth. Meanwhile, experimental tests verify has a faster than . The formed V‐Bi NS exhibits up 96 % HCOO − Faraday efficiency 400 mA cm −2 partial current densities, its electrochemical active surface area normalized formate density yield 2.2 times higher those intact (I‐Bi NS). Density functional theory calculations indicate vacancies electron‐rich aggregation reduce activation energy *CO radicals stabilize adsorption key intermediate *OCHO, thus facilitating reaction kinetics production.

Language: Английский

Boron‐Doping Engineering in AgCd Bimetallic Catalyst Enabling Efficient CO2 Electroreduction to CO and Aqueous Zn‐CO2 Batteries DOI Open Access

Lan Kang,

Yonghao Zhang, Lihui Dong

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 8, 2024

Abstract The limited adsorption and activation of CO 2 on catalyst the high energy barrier for intermediate formation hinder development electrochemical reduction reactions (CO RR). Herein, this work reports a boron (B) doping engineering in AgCd bimetals to alleviate above limitations efficient electroreduction aqueous Zn‐CO batteries. Specifically, B‐doped bimetallic (AgCd‐B) is prepared via simple reaction at room temperature. A combination situ experiments density functional theory (DFT) calculations demonstrates that B‐doping simultaneously enhances reduces binding intermediates by moderating electronic structure bimetals. As result, AgCd‐B exhibits Faraday efficiency (FE ) 99% −0.8 V versus reversible hydrogen electrode (RHE). Additionally, it maintains FE over 92% wide potential window 600 mV (−0.6 −1.1 RHE). Furthermore, coupled with Zn anode assemble batteries shows power 20.18 mW cm −2 recharge time 33 h.

Language: Английский

Citations

7
Relay electrocatalysis with bimetallic sites for highly efficient oxidation in multiple cascade reaction DOI
Zhefei Zhao,

Mengkai Zhu,

Mengnan Qu

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 484, P. 149768 - 149768

Published: Feb. 16, 2024

Language: Английский

Citations

6
Asymmetrical Interactions between Ni Single Atomic Sites and Ni Clusters in a 3D Porous Organic Framework for Enhanced CO2 Photoreduction DOI Creative Commons
Fang‐Qin Yan, Xiaoyu Dong,

Yi‐Man Wang

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: 11(23)

Published: March 15, 2024

Abstract 3D porous organic frameworks, which possess the advantages of high surface area and abundant exposed active sites, are considered ideal platforms to accommodate single atoms (SAs) metal nanoclusters (NCs) in high‐performance catalysts; however, very little research has been conducted this field. In present work, a framework containing Ni 1 SAs n NCs is prepared through metal‐assisted one‐pot polycondensation tetraaldehyde hexaaminotriptycene. The sites clusters confined space created favorable micro‐environment that facilitated activation chemically inert CO 2 molecules, thus promoting overall photoconversion efficiency selectivity reduction. 3D‐NiSAs/NiNCs‐POPs, as photoreduction catalyst, demonstrated an exceptional production rate 6.24 mmol g −1 h , 98%, excellent stability. theoretical calculations uncovered asymmetrical interaction between not only favored bending molecules reducing reduction energy, but also regulated electronic structure catalyst leading optimal binding strength intermediates.

Language: Английский

Citations

6
Enhanced electrocatalytic CO2 reduction through constructing chemically homogeneous interfaces via ultrathin carbon encapsulated tin oxide DOI
Zongdeng Wu, Di Yao, Peng Zhao

et al.

Nano Energy, Journal Year: 2024, Volume and Issue: 127, P. 109729 - 109729

Published: May 12, 2024

Language: Английский

Citations

5
Steering Geometric Reconstruction of Bismuth with Accelerated Dynamics for CO2 Electroreduction DOI
Xiaowen Wang, Yangyang Zhang,

Shao Wang

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(34)

Published: June 5, 2024

Abstract Bismuth‐based materials have emerged as promising catalysts in the electrocatalytic reduction of CO 2 to formate. However, reasons for reconstruction Bi‐based precursors form bismuth nanosheets are still puzzling, especially formation defective sites. Herein, we prepare with vacancy‐rich defects (V‐Bi NS) by rapidly reconstructing Bi 19 Cl 3 S 27 under negative potential. Theoretical analysis reveals that introduction chlorine induces generation intrinsic electric field precursor, thereby increasing electron transfer rate and further promoting metallization trivalent bismuth. Meanwhile, experimental tests verify has a faster than . The formed V‐Bi NS exhibits up 96 % HCOO − Faraday efficiency 400 mA cm −2 partial current densities, its electrochemical active surface area normalized formate density yield 2.2 times higher those intact (I‐Bi NS). Density functional theory calculations indicate vacancies electron‐rich aggregation reduce activation energy *CO radicals stabilize adsorption key intermediate *OCHO, thus facilitating reaction kinetics production.

Language: Английский

Citations

5