Stabilizing *COOH on Ni Single-Atom Sites by Dual-Phase Ni3ZnC0.7 and Ni for Enhanced Electrocatalytic CO2 Reduction DOI

Longlong Qi,

Shao-Chen Wang,

Xiang Ji

и другие.

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Май 9, 2025

Metal-based nanoparticle-modulated single-atom catalysts have garnered significant attention in the field of electrocatalytic CO2 reduction reaction. However, scaling relationships between intermediates and their binding energies lead to unsatisfactory selectivity for specific products. Herein, Ni3ZnC0.7-Ni nanoparticles (NPs)-modulated Ni single-atoms (SAs) supported on N-doped carbon (NiSAs/Ni3ZnC0.7-NiNPs@NC) were constructed using a metal-organic framework as template. Experiments theoretical calculations reveal that charge transfer from Ni3ZnC0.7 NPs SAs results formation electron-enriched sites, which is conducive stabilize key *COOH intermediate. The catalyst shows partial current density CO -345 mA cm-2 Faradaic efficiency (FECO) 99.3% at -0.8 V versus reversible hydrogen electrode flow cell. Furthermore, maintains FECO above 94% after continuous electrolysis 18 h, showcasing its remarkable long-term stability.

Язык: Английский

Active Hydroxyl‐Mediated Preferential Cleavage of Carbon‐Carbon Bonds in Electrocatalytic Glycerol Oxidation DOI Open Access
Qiang Zhang, Xiaojing Zhang, Baocang Liu

и другие.

Angewandte Chemie International Edition, Год журнала: 2025, Номер unknown

Опубликована: Янв. 8, 2025

Electrocatalytic glycerol oxidation reaction (GOR) to produce high-value formic acid (FA) is hindered by high formation potential of active species and sluggish C-C bond cleavage kinetics. Herein, Ni single-atom (NiSA) Co (CoSA) dual sites anchored on nitrogen-doped carbon nanotubes embedded with Ni0.1Co0.9 alloy (Ni0.1Co0.9@NiSACoSA-NCNTs) are constructed for electrochemical GOR. Remarkably, it can reach 10 mA cm-2 at a low 1.15 V versus the reversible hydrogen electrode (vs. RHE) realize formate selectivity 93.27 % even conversion 98.81 1.45 vs. RHE. The GOR mechanism pathway systematically elucidated via experimental analyses theoretical calculations. It revealed that hydroxyl (*OH) be produced during NiSA, CoSA, synergistically optimizes electronic structure CoSA sites, reducing energy barriers *OH-mediated bonds dehydrogenation C1 intermediates. This decreases number intermediates steps GOR-to-FA, thus increasing production efficiency. After coupling evolution in membrane assembly cell, 14.26 g 23.10 L H2 100 108 h.

Язык: Английский

Процитировано

4
Innovative strategies for designing and constructing efficient fuel cell electrocatalysts DOI
Chengming Huang,

Fangzheng Wang,

Xia Chen

и другие.

Chemical Communications, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Polymer electrolyte membrane fuel cells (PEMFCs) are one of the most promising energy conversion devices due to their high efficiency and zero emission; however, two major challenges, cost short lifetime, have been hindering commercialization cells. Achieving low-Pt or non-precious metal oxygen reduction reaction (ORR) electrocatalysts is main research ideas in this field. In review, degradation mechanism Pt-based catalysts firstly explained elucidated, then five strategies suggested for Pt usage without loss activity durability: modulation metal-support interactions, optimization local ionomers mass transport, composition, structure, multi-site synergistic effects. For carbon-based catalysts, problems challenges faced by heteroatom/transition-metal doped discussed, several improve carbon suggested. Particularly, an innovative quantum well catalyst structure reported quite recently presented which may open up new prospects development cell technology. Finally, review concludes with a brief conclusion future electrocatalysts.

Язык: Английский

Процитировано

3
Breaking symmetry for better catalysis: insights into single-atom catalyst design DOI
Peng Cao,

Xueqin Mu,

Fanjiao Chen

и другие.

Chemical Society Reviews, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

This review examines the strategies of symmetry breaking (charge/coordination/geometric) in single-atom catalysts to regulate active site electronic structures, greatly enhancing catalytic performance.

Язык: Английский

Процитировано

3
Synergistic Catalysis of Cobalt Single Atoms and Clusters Loaded on Carbon Film: Enhancing Peroxymonosulfate Activation for Degradation of Norfloxacin DOI

Chenglin Hao,

Tinghang Li,

Yanjie Xie

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 1, 2024

Abstract Many existing research focuses on the differences or performance comparisons between single‐atom small‐sized nanocluster catalysts, but there is a lack of comprehensive coupling relationship structure and activity mechanism synergy. This study investigates combined catalytic potential cobalt single atoms (SAs) nanoclusters (NCs) for enhanced peroxymonosulfate (PMS) activation to degrade norfloxacin (NFX). A novel Co SAs‐NCs /CN/TiO 2 catalyst synthesized, featuring SAs NCs uniformly dispersed carbon film wrapping TiO , degradation efficiency NFX solution almost completely degraded, with mineralization rate 76.35%. Density functional theory (DFT) calculations indicate that synergistic interaction promotes more efficient PMS adsorption significantly reduces energy barrier, which enhances electron transfer increases reactive oxygen species (ROS) generation. highlights robust versatile nature this system in addressing various contaminants. elucidates providing new ideas advanced oxidation processes (AOPs) environmental remediation, linking emphasizes practicality importance effectively long‐term remediation water pollutants.

Язык: Английский

Процитировано

16
Emerging Supported Metal Atomic Clusters for Electrocatalytic Renewable Conversions DOI
Hanqi Xu, Wenqi Zhao, Di Li

и другие.

ACS Catalysis, Год журнала: 2025, Номер unknown, С. 2434 - 2458

Опубликована: Янв. 27, 2025

Subnanometric supported metal atomic clusters (SMACs) composed of several to tens surface atoms have attracted increased research interest in electrocatalysis. SMACs been known show distinct properties compared their nanoparticles and single atom counterparts long developed for functional improvements. Tremendous advancements made the past few years, with a notable trend more precise design down an atomic/molecular level investigation transferring into practical devices, which motivates this timely review. To begin, review presents classifies classic latest synthetic strategies state-of-the-art characterization techniques SMACs. It then outlines discusses basic structure principles SMACs, highlighting importance organic ligands, size effect clusters, support-cluster interactions determining catalytic activity device stability. Thereafter, recent advances typical electrocatalysis processes from laboratory scale industrial are discussed obtain general understanding structure–activity correlations Current challenges future perspectives emerging field also discussed, aiming at practicing SMAC catalysts energy conversion devices.

Язык: Английский

Процитировано

2
Photo(electro)catalytic Water Splitting for Hydrogen Production: Mechanism, Design, Optimization, and Economy DOI Creative Commons
Xingpeng Li, Chenxi Zhang, Jiafeng Geng

и другие.

Molecules, Год журнала: 2025, Номер 30(3), С. 630 - 630

Опубликована: Янв. 31, 2025

As an energy carrier characterized by its high density and eco-friendliness, hydrogen holds a pivotal position in transition. This paper elaborates on the scientific foundations recent progress of photo- electro-catalytic water splitting, including corresponding mechanism, material design optimization, economy production. It systematically reviews research photo(electro)catalytic materials, oxides, sulfides, nitrides, noble metals, non-noble metal, some novel photocatalysts provides in-depth analysis strategies for optimizing these materials through design, component adjustment, surface modification. In particular, it is pointed out that nanostructure regulation, dimensional engineering, defect introduction, doping, alloying, functionalization can remarkably improve catalyst performance. The importance adjusting reaction conditions, such as pH addition sacrificial agents, to boost catalytic efficiency also discussed, along with comparison cost-effectiveness different production technologies. Despite significant advancements made splitting technology, this highlights challenges faced field, development more efficient stable photo(electro)catalysts, improvement system conversion efficiency, cost reduction, promotion technology industrialization, addressing environmental issues.

Язык: Английский

Процитировано

2
Tailoring peroxyacetic acid (PAA) activation by sewage sludge derived atomic-Fe clusters/Fe-N4 catalyst via thermally driven spin manipulation DOI
Yi Xu,

Cao Xiao,

Haiyan Yang

и другие.

Journal of Colloid and Interface Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

1
Multiple active site metal-based catalysts for C-N coupling reactions and the beyond DOI

Mingzheng Shao,

Yangbo Ma, Yuecheng Xiong

и другие.

Next Materials, Год журнала: 2025, Номер 8, С. 100555 - 100555

Опубликована: Фев. 21, 2025

Язык: Английский

Процитировано

1
Triggering Synergistic Electronic Effect via Electron‐Directed Transfer within PtNPs‐Fe/NC Oxygen Reduction Catalyst for Zinc‐Air Batteries DOI

Quanlei Ma,

Yijing Liao,

Qin Zhao

и другие.

Small, Год журнала: 2025, Номер unknown

Опубликована: Фев. 28, 2025

Abstract Rationally tuning Fe‐N‐C catalysts with synergistic nanoparticles for efficient oxygen reduction reaction (ORR) still remains challenging. Here, a nitrogen‐doped carbon‐supported bimetallic catalyst (Pt NPs ‐Fe/NC), combining atomically dispersed sites Pt nanoparticles, is synthesized. Experimental results reveal directional electron transfer between and Fe sites, which induces an effect, effectively modulating the density around sites. The modulation significantly enhances ORR catalytic activity of ‐Fe/NC. As result, ‐Fe/NC displays half‐wave potential 0.901 V (versus RHE) Tafel slope 59 mV dec −1 , surpassing performance commercial Pt/C demonstrating accelerated kinetics. In meantime, maintains excellent durability in terms stability as well. When assembled into liquid zinc‐air batteries (ZABs), delivers peak power 201.48 mW cm −2 specific capacity 809 mAh g . Additionally, ‐Fe/NC‐based flexible ZABs display outstanding discharge cycling stability. This work highlights effectiveness multiscale advancing provides valuable insights construction strategies energy storage applications.

Язык: Английский

Процитировано

1
Rapid Outgassing of Hydrophilic TiO2 Electrodes Achieves Long-Term Stability of Anion Exchange Membrane Water Electrolyzers DOI Creative Commons
Shajahan Shaik,

Jeonghyeon Kim,

Mrinal Kanti Kabiraz

и другие.

Nano-Micro Letters, Год журнала: 2025, Номер 17(1)

Опубликована: Март 13, 2025

Abstract The state-of-the-art anion-exchange membrane water electrolyzers (AEMWEs) require highly stable electrodes for prolonged operation. stability of the electrode is closely linked to effective evacuation H 2 or O gas generated from surface during electrolysis. In this study, we prepared a super-hydrophilic by depositing porous nickel–iron nanoparticles on annealed TiO nanotubes (NiFe/ATNT) rapid outgassing such nonpolar gases. NiFe/ATNT exhibited an overpotential 235 mV at 10 mA cm −2 oxygen evolution reaction in 1.0 M KOH solution, and was utilized as anode AEMWE achieve current density 1.67 A 1.80 V. addition, with electrode, which enables outgassing, showed record 1500 h 0.50 under harsh temperature conditions 80 ± 3 °C.

Язык: Английский

Процитировано

1