Energy & Fuels, Год журнала: 2025, Номер unknown
Опубликована: Апрель 21, 2025
Язык: Английский
Small, Год журнала: 2024, Номер 20(25)
Опубликована: Янв. 19, 2024
Abstract As cost‐effective catalysts, platinum (Pt) single‐atom catalysts (SACs) have attracted substantial attention. However, most studies indicate that Pt SACs in acidic hydrogen evolution reaction (HER) follow the slow Volmer‐Heyrovsky (VH) mechanism instead of fast kinetic Volmer‐Tafel (VT) pathway. Here, this work propose VH can be switched to faster VT pathway for efficient HER by correlating single atoms (SAs) with clusters (Cs). Our calculations reveal correlation between SAs and Cs significantly impacts electronic structure exposed atoms, lowering adsorption barrier atomic enabling a mechanism. To validate these findings, purposely synthesize three catalysts: l ‐Pt@MoS 2 , m h low, moderate, high Pt‐loading, having different distributions Cs. The m‐Pt@MoS catalyst properly exhibits outstanding performance an overpotential 47 mV Tafel slope 32 dec −1 . Further analysis values confirms sample indeed follows mechanism, aligning theoretical findings. This study offers deep understanding synergistic paving way designing novel‐advanced catalysts.
Язык: Английский
Процитировано
32
Journal of Colloid and Interface Science, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
4
Small, Год журнала: 2025, Номер unknown
Опубликована: Фев. 5, 2025
Abstract This work investigates novel improvements in FeNi‐layered double hydroxide (LDH)/MIL‐88A heterocomposite for sustainable seawater electrolysis through a single‐step dual functionalization process. The Fe/Ni precursor weight ratio is optimized, resulting the formation of smaller LDH petals and nano‐sized MIL‐88A metal–organic framework, which transforms into clusters Fe 2 O 3 nanospheres within nitrogen‐functionalized carbon matrix over NiFe 4 nano upon calcination. Furthermore, oxygen vacancies, nitrogen are attained single step by employing thermal ammonia reduction, significantly improving evolution reaction (OER) hydrogen (HER) activities. Particularly vacancy found to accelerate O─O coupling OER lowering activation barrier. Likewise, promotes destabilizing hydride intermediates HER potentially facilitating faster proton‐coupled electron transfer. Hence, optimized electrode achieves current densities 200 mA cm −2 at overpotentials 350 240 mV respectively. chronopotentiometry stability tests confirms electrode's durability h 20 alkaline electrolyte. electrode, composed cost‐effective environmentally friendly materials, demonstrates robustness electrolytes, positioning it as strong candidate practical water applications.
Язык: Английский
Процитировано
3
Chemical Society Reviews, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
This review investigates atomic site catalysts (ASCs) for electrochemical hydrogen evolution reaction (HER), discussing their properties, types, performance, significance, activity, selectivity, stability, challenges, and future research directions.
Язык: Английский
Процитировано
3
Advanced Functional Materials, Год журнала: 2024, Номер 34(51)
Опубликована: Авг. 27, 2024
Abstract The main challenge in developing Schottky‐contact OER catalytic devices based on layered double hydroxides (LDHs) is to achieve metal–semiconductor junctions with low contact resistance and high charge transfer capacity. However, due the presence of potential barriers Fermi pinning, conventional Schottky contacts are usually unsatisfactory, resulting poor‐working electrode performance energy consumption. In this study, a new concept “hindrance factor” introduced quantify difficulty electron transfer, low‐hindrance factor formed by strong coupling semiconductor LDH NiMo alloy clusters designed. This interface guides redistribution, optimizes bonding orbital states adsorption sites, enhances targeted OH intermediates. results show that configured NiMo@NiFeCe‐LDH working only needs 1.445 V (vs RHE) drive reaction shows excellent durability 400 h testing. At same time, strategy for screening high‐performance developed. provides bridge studying properties, hybridization, reveals mechanism reducing resistance, has important guiding significance electrocatalysts stability.
Язык: Английский
Процитировано
17
Coordination Chemistry Reviews, Год журнала: 2024, Номер 515, С. 215952 - 215952
Опубликована: Май 20, 2024
Язык: Английский
Процитировано
16
Materials Reports Energy, Год журнала: 2024, Номер 4(3), С. 100285 - 100285
Опубликована: Авг. 1, 2024
Artificial photocatalysis represents a hopeful avenue for tackling the global crisis of environmental and energy sustainability. The crux industrial application in lies efficient photocatalysts that can inhibit recombination photogenerated charge carriers, thereby boost efficiency chemical reactions. In past decade, single-atom catalysts (SACs) have been growing extremely rapidly become forefront owing to their superior utilization metal atoms outstanding catalytic activity. this work, we provide an overview latest advancements challenges SACs photocatalysis, focusing on photocatalytic mechanisms, encompassing generation, separation, migration, surface extraction carriers. We also explore design, synthesis, characterization introduce progress applications, such as water splitting CO2 reduction. Lastly, offer our personal perspectives opportunities aiming insights into future studies applications.
Язык: Английский
Процитировано
11
Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(31)
Опубликована: Май 17, 2024
The rational design of efficient catalysts for uric acid (UA) electrooxidation, as well the establishment structure-activity relationships, remains a critical bottleneck in field electrochemical sensing. To address these challenges, herein, hybrid catalyst that integrates carbon-supported Pt nanoparticles and nitrogen-coordinated Mn single atoms (Pt
Язык: Английский
Процитировано
8
Small, Год журнала: 2024, Номер 20(47)
Опубликована: Авг. 15, 2024
The developed strategies for synthesizing metal phosphides are usually cumbersome and pollute the environment. In this work, an ultrafast (30 s) quasi-solid-state microwave approach is to construct cobalt-molybdenum phosphide decorated with Ru (Ru/Co
Язык: Английский
Процитировано
8
Advanced Sustainable Systems, Год журнала: 2024, Номер 8(7)
Опубликована: Июнь 6, 2024
Abstract Single‐atom catalysis involves loading the active metal onto carrier's surface as a single‐atom. This atom is primarily bonded to carrier through hetero‐atom bonding. It important note that coordination environment of atoms may not be same when each dispersed has an identical on surface. The utilization single‐atom catalysts (SACs) doesn't strictly imply solitary with zero valency functions core. Singular can also engage in distant interactions other or clusters substrate, like electron transfer, and frequently demonstrate specific charges. main reason for high activity catalyst remote (i.e., long‐range) interaction surrounding atoms. For this reason, study mechanism long‐range between multiple sites atomic cluster become urgent task design regulation performance.
Язык: Английский
Процитировано
7