Nanoconfinement Effects in Electrocatalysis and Photocatalysis DOI Creative Commons
Chuanbiao Bie, Jindi Yang, Xiangkang Zeng

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Abstract Recently, the enzyme‐inspired nanoconfinement effect has garnered significant attention for enhancing efficiency of electrocatalysts and photocatalysts. Despite substantial progress in these fields, there remains a notable absence comprehensive insightful articles providing clear understanding nanoconfined catalysts. This review addresses this gap by delving into catalysts electrocatalytic photocatalytic energy conversion. Initially, on thermodynamics kinetics reactions is explored. Subsequently, primary secondary structures are categorized, their properties outlined, typical methods construction summarized. Furthermore, an overview state‐of‐the‐art applications provided, focusing hydrogen oxygen evolution, reduction, carbon dioxide peroxide production, nitrogen reduction. Finally, current challenges future prospects discussed. aims to provide in‐depth insights guidelines advance development conversion technology

Language: Английский

Single atomic cerium sites anchored on nitrogen-doped hollow carbon spheres for highly selective electroreduction of nitric oxide to ammonia DOI
Weiqing Zhang,

Xuhui Qin,

Tianran Wei

et al.

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 638, P. 650 - 657

Published: Feb. 9, 2023

Language: Английский

Citations

78
Designs of Tandem Catalysts and Cascade Catalytic Systems for CO2 Upgrading DOI

Wanzhen Zheng,

Xiaoxuan Yang, Zhongjian Li

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(43)

Published: June 20, 2023

Upgrading CO2 into multi-carbon (C2+) compounds through the reduction reaction (CO2 RR) offers a practical approach to mitigate atmospheric while simultaneously producing high value chemicals. The pathways for C2+ production involve multi-step proton-coupled electron transfer (PCET) and C-C coupling processes. By increasing surface coverage of adsorbed protons (*Had ) *CO intermediates, kinetics PCET can be accelerated, thereby promoting production. However, *Had are competitively intermediates on monocomponent catalysts, making it difficult break linear scaling relationship between adsorption energies /*CO intermediate. Recently, tandem catalysts consisting multicomponents have been developed improve or by enhancing water dissociation -to-CO auxiliary sites. In this context, we provide comprehensive overview design principles based products. Moreover, development cascade RR catalytic systems that integrate with downstream catalysis has expanded range potential upgrading Therefore, also discuss recent advancements in systems, highlighting challenges perspectives these systems.

Language: Английский

Citations

58
Challenges and Opportunities for Single‐Atom Electrocatalysts: From Lab‐Scale Research to Potential Industry‐Level Applications DOI Creative Commons
Chen Jia, Qian Sun, Ruirui Liu

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 13, 2024

Single-atom electrocatalysts (SACs) are a class of promising materials for driving electrochemical energy conversion reactions due to their intrinsic advantages, including maximum metal utilization, well-defined active structures, and strong interface effects. However, SACs have not reached full commercialization broad industrial applications. This review summarizes recent research achievements in the design crucial electrocatalytic on sites, coordination, substrates, as well synthesis methods. The key challenges facing activity, selectivity, stability, scalability, highlighted. Furthermore, it is pointed out new strategies address these increasing activity enhancing utilization improving optimizing local environment, developing fabrication techniques, leveraging insights from theoretical studies, expanding potential Finally, views offered future direction single-atom electrocatalysis toward commercialization.

Language: Английский

Citations

26
Revealing the role of electrode potential micro-environments in single Mn atoms for carbon dioxide and oxygen electrolysis DOI
Pengcheng Liu, Wenbo Liu, Kai‐Li Wang

et al.

Nano Research, Journal Year: 2024, Volume and Issue: 17(9), P. 7957 - 7966

Published: July 1, 2024

Language: Английский

Citations

21
Amine-Functionalized Metal-Free Nanocarbon to Boost Selective CO2 Electroreduction to CO in a Flow Cell DOI

Guangbin An,

Kang Wang, Zeming Wang

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(22), P. 29060 - 29068

Published: May 20, 2024

Highly efficient electrochemical CO2-to-CO conversion is a promising approach for achieving carbon neutrality. While nonmetallic electrocatalysts have shown potential utilization in H-type cells, flow cells at an industrial scale remains challenging. In this study, we present cost-effective synthesis strategy preparing ultrathin 2D nanosheet catalysts through simple amine functionalization. The optimized catalyst, NCNs-2.5, demonstrates exceptional CO selectivity with maximum Faradaic efficiency of 98% and achieves high current density 55 mA cm-2 cell. Furthermore, the catalyst exhibits excellent long-term stability, operating continuously 50 h while maintaining above 90%. superior catalytic activity NCNs-2.5 attributed to presence amine-N active sites within lattice structure. This work establishes foundation rational design as sustainable alternatives metals energy systems.

Language: Английский

Citations

17
Unveiling Key Descriptors of Ionomer Materials for Enhanced Electrochemical CO2 Reduction DOI

Wonsang Jung,

Sang‐Hun Shin, Sejin Park

et al.

ACS Energy Letters, Journal Year: 2025, Volume and Issue: 10(1), P. 620 - 628

Published: Jan. 3, 2025

Polymeric ionomers near the catalyst surface of CO2 reduction reaction (CO2RR) electrodes affect their efficiency; however, multifaceted properties complicate structure–activity relationship elucidation. Here, we synthesized polycarbazole-based anion-exchange (QPC) bearing varying functionalized side chains to explore this relationship. Comprehensive analysis in physicochemical properties, electrochemical activity, and operando ATR-SEIRAS revealed that functional group modification significantly influenced intrinsic ionomer thereby affecting Ag microenvironments interfacial water structures, kinetics protonation step for CO2RR hydrogen evolution (HER). Notably, QPC-trimethyl phosphonium (TMP) induced favorable having a high proportion strong H-bonded with low Stark tuning slopes, which inhibit HER promote CO2RR. A CO Faradaic efficiency (>90%) was maintained using QPC-TMP membrane electrode assembly, even under concentrations (100–15%) elevated temperatures (28–72 °C). These findings suggest catalytic environment can be optimized by fine-tuning structure, contributing advancement high-performance ionomers.

Language: Английский

Citations

2
Efficient Electrocatalytic Reduction of CO2 to Ethanol Enhanced by Spacing Effect of CuCu in Cu2‐xSe Nanosheets DOI
Hongzhi Wang,

Xinze Bi,

Yifan Yan

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(25)

Published: March 10, 2023

Abstract It is highly desired yet challenging to strategically steer carbon dioxide (CO 2 ) electroreduction reaction ER) toward ethanol (EtOH) with high activity, which provides a promising way for intermittent renewable energy reservation. Controlling spatial distance between the adjoining active centers and promoting CC coupling progress are crucial realize this purpose. Herein, ultrathin 2D Cu 2‐x Se prepared abundant vacancies, where CuCu around vacancies effectively shortened because of lattice stress. Besides, moderate induced by can significantly decrease Gibbs free asymmetric *CO*CHO progress, change local charge distribution, valence state atoms increase electron‐donating capacity dual sites. Combining experimental observations density functional theory simulations, sites 2.51 Å in V ‐Cu sample catalyze CO ER EtOH selectivity potential range from −0.4 −1.6 V, reach highest faradaic efficiency 68.1% at −0.8 V. This work reveals influence spacing effect on selectivity, new idea future design catalysts chain elongation reaction, bring extensive attention.

Language: Английский

Citations

35
CO2 Conversion Toward Real‐World Applications: Electrocatalysis versus CO2 Batteries DOI Creative Commons
Changfan Xu,

Yulian Dong,

Huaping Zhao

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(32)

Published: April 25, 2023

Abstract Electrochemical carbon dioxide (CO 2 ) conversion technologies have become new favorites for addressing environmental and energy issues, especially with direct electrocatalytic reduction of CO (ECO RR) alkali metal‐CO (M–CO batteries as representatives. They are poised to create economic drivers while also paving the way a cleaner more sustainable future humanity. Although still far from practical application, ECO RR has been intensively investigated over last few years, some achievements. In stark contrast, M–CO batteries, aqueous hybrid offer potential combine storage into an integrated system, but their research is in early stages. This article gives insightful review, comparison, analysis recent advances illustrating similarities differences, aiming advance development innovation. Considering crucial role well‐designed functional materials facilitating special attention paid rational design strategies components, such electrodes/catalysts, electrolytes, membranes/separators, at industrial level impact on conversion. Moreover, perspectives suggestions presented facilitate applications.

Language: Английский

Citations

32
Energy-Efficient Ammonia Synthesis from Nitrate via CoNi Alloys Incorporated in Carbon Frameworks DOI
Fengcai Lei, Yiming Zhang,

Mengmeng Xu

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2023, Volume and Issue: 11(24), P. 9057 - 9064

Published: June 6, 2023

As a nitrogen-containing source, nitrate is regarded as promising precursor for generating ammonia (NH3) through electrochemical processes that can potentially mitigate the problem of groundwater contamination and hydrogen-carrier energy crisis. Herein, we report cobalt zeolitic imidazolate framework (ZIF-67)-derived catalyst CoNi alloys incorporated in N-doped carbon frameworks electroreduction. Computational results obtained using density functional theory give deep insight structure embedded skeleton inhibit production hydrogen facilitate hydrogenation *NO intermediates. The enriched active sites from ZIF-67-derived introduction Ni afford desirable electrocatalytic performance. Finally, optimized CoNi@NC hybrid achieve an 168 mmol gcat–1 h–1 Faradaic efficiency ∼93% at potential low −0.1 V vs reversible electrode (RHE). highest yield rate 1254 be detected −0.6 RHE. This study inspire further development non-noble metal-based electrocatalysts reduction also anticipation into sustainable synthesis carbon-related fuels CO2 reduction.

Language: Английский

Citations

30
Molten-salt-assisted synthesis of single-atom iron confined N-doped carbon nanosheets for highly efficient industrial-level CO2 electroreduction and Zn-CO2 batteries DOI
Dan Lin, Tingting Wang,

Zilin Zhao

et al.

Nano Energy, Journal Year: 2023, Volume and Issue: 113, P. 108568 - 108568

Published: May 28, 2023

Language: Английский

Citations

29