Reduction of 4‐Nitrophenol Catalyzed by Gold Nanoclusters with Aggregation‐induced‐emission: Emission Intensity Correlated Activity and Mechanistic Exploration DOI Open Access
Bo Peng,

Bingqian Shan,

Koon‐Fung Lam

и другие.

ChemCatChem, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 5, 2024

Abstract Thiolate‐protected Au nanoclusters (NCs) have developed as a promising class of model catalysts to achieve fundamental understanding metal nanocatalysis. Whereas, the packing mode peripheral ligand on core is changeful in reaction medium and show elusive impact catalytic activity. In this work, using glutathione (GSH) protected NCs (Au@GSH NCs) with aggregation‐induced‐emission (AIE) characteristics catalyst for hydrogenation 4‐nitrophenol (4‐NP), photoluminescence (PL) intensity correlated activity Au@GSH was successfully mediated by addition Ag + preparation or poor solvent medium, showing relationship “as one falls, another rises.” intense PL implied dense ligand, which hampered accessibility active site thus exhibited slowest kinetics reduction 4‐NP vice versa. Based methodology, case study effect salt additives carried out, different mechanisms are distinguished change intensity, combination diagnostic deuterium isotope experiments, it has been demonstrated that proton from water involved transfer process rate‐determining step, contribution ionic hydrogen bonding network determines their kinetics. The correlation between could provide an efficient way design highly NC give new insight understand unique optoelectronic properties mechanism.

Язык: Английский

Insights into Operating Conditions on Electrocatalytic CO2 Reduction DOI Open Access
Zhaozhao Zhu, Wu Tang, Junjie Wang

и другие.

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 5, 2025

Abstract Electrocatalytic CO 2 reduction (CO RR) is rapidly emerging as a promising sustainable strategy for transforming into valuable fuels and chemical feedstocks, crucial step toward carbon‐neutral society. The efficiency, selectivity, stability of RR are heavily influenced by the chosen catalyst operating conditions used. Despite substantial advances in development catalysts, there scarcity comprehensive reviews focusing on influence different environments performance. This review offers detailed examination internal external environmental control strategies designed to enhance efficiency. fundamental reaction mechanisms through situ operational techniques, paired with theoretical analyses, discussed while also identifying key challenges future research directions technology. By delivering overview current state field, this highlights critical role control, mechanistic insights, practical considerations needed successful commercialization

Язык: Английский

Процитировано

2

A comprehensive review of atomically precise metal nanoclusters with emergent photophysical properties towards diverse applications DOI
Subarna Maity, Sarita Kolay, Sikta Chakraborty

и другие.

Chemical Society Reviews, Год журнала: 2024, Номер unknown

Опубликована: Дек. 13, 2024

Ligand-protected metal nanoclusters are an emerging class of nanomaterials at the interface atomic and plasmonic regimes with unique photophysical electrochemical properties, leading to diverse applications.

Язык: Английский

Процитировано

7

Dipropyne‐Modified N‐Heterocyclic Carbene Stabilized Atomically Precise Copper(I) Nanocluster Catalysts for CO₂ Electroreduction DOI Open Access
Bao‐Liang Han, Lei Zhao,

Zhi‐Rui Yuan

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 25, 2025

Abstract Atomically precise copper(I) nanoclusters with stable active sites are highly sought‐after catalysts for the electrocatalytic CO₂ reduction reaction (CO₂RR), providing an exceptional platform to elucidate structure–activity relationships. However, rational synthesis of robust copper as effective electrocatalysts and understanding relationship between a more realistic site its performance remain significant challenge due their inherent instability. Here, novel dipropyne‐modified NHC ligand is elaborately devised two atomically nanoclusters, [Cu 17 H 6 (NHC ) 4 (dppm) ] 3+ ( Cu17a Ph Cu17b ), both exhibiting distinct unique square orthobicupola Cu core J 28 , Johnson solid). The σ‐ π‐bonding ligands imparts ultrahigh stability while coordination pattern μ 7 ‐ η σ 1 : π 2 facilitates exposure neighboring atoms, generating accessible catalytic sites. Electrocatalytic CO experiments show that achieves highest Faradaic efficiency ethylene production among reported nanoclusters. tandem mechanism RR elucidated through combination theoretical calculations attenuated total reflection‐surface‐enhanced IR absorption spectroscopy (ATR‐SEIRAS). This work not only introduces synthesizing but also offers critical insights into molecular design principles catalysts.

Язык: Английский

Процитировано

1

An Ab Initio Journey toward the Molecular‐Level Understanding and Predictability of Subnanometric Metal Clusters DOI Creative Commons
María Pilar de Lara‐Castells

Small Structures, Год журнала: 2024, Номер 5(10)

Опубликована: Июнь 30, 2024

Current advances in synthesizing and characterizing atomically precise monodisperse metal clusters (AMCs) at the subnanometer scale have opened up new possibilities quantum materials research. Their quantizied “molecule‐like” electronic structure showcases unique stability, physical chemical properties differentiate them from larger nanoparticles. When integrated into inorganic that interact with environment sunlight, AMCs serve to enhance their (photo)catalytic activity optoelectronic properties. tiny size makes isolated gas phase amenable atom‐scale modeling using either density functional theory (DFT) or methods a high level of ab initio theory, even addressing nonadiabatic (e.g., Jahn–Teller) effects. Surface‐supported can be routinely modeled DFT, enabling long real‐time molecular dynamics simulations. optical also addressed time‐dependent DFT reduced matrix (RDM) theory. These theoretical–computational efforts aim achieve predictability molecular‐level understanding stability as function composition, size, structural fluxionality different thermodynamical conditions (temperature pressure). In this perspective, potential DFT‐based is illustrated through recent studies unsupported surface‐supported AMCs. Future directions research are discussed, including applications methodological enhancements beyond state‐of‐the‐art.

Язык: Английский

Процитировано

6

Advancing electrochemical CO2 reduction with group 11 metal nanoclusters for renewable energy solutions DOI Creative Commons
Sourav Biswas,

Yamato Shingyouchi,

Masaki Ogami

и другие.

EcoEnergy, Год журнала: 2024, Номер 2(3), С. 400 - 418

Опубликована: Июль 10, 2024

Abstract Understanding the intricate relationship between structure and properties is paramount in distinguishing nanocluster (NC) materials from their counterparts. Despite progress synthesizing new NCs, sluggish exploration of potential applications persists due to difficulty stabilizing these materials. However, recent investigations have unveiled remarkable efficacy as catalysts electrochemical CO 2 reduction reactions, surpassing traditional This discovery, addressing urgent global concerns, has quickly drawn significant attention this field, leading its rapid expansion. Hence, there an need outline research landscape pinpoint effective strategies, marking a advancement. In context, our endeavor dedicated offering researchers thorough understanding recently synthesized NC We aim elucidate distinct structural architectures associated essential for catalyst design. envision that systematic review will serve guiding beacon future endeavors burgeoning field.

Язык: Английский

Процитировано

3

One-step functionalization of gold nanorods with N-heterocyclic carbene ligands DOI Creative Commons
Nathaniel L. Dominique, Phattananawee Nalaoh, David M. Jenkins

и другие.

RSC Advances, Год журнала: 2025, Номер 15(7), С. 5007 - 5010

Опубликована: Янв. 1, 2025

Direct addition of N-heterocyclic carbene silver or gold complexes to CTAC coated nanorods yields chemisorbed ligands via a facile, one-step procedure.

Язык: Английский

Процитировано

0

Metal Cluster Catalysts for Electrochemical CO2 Reduction DOI
Khac Huy Dinh, Leta Takele Menisa, Hugh Warkentin

и другие.

ACS Catalysis, Год журнала: 2025, Номер unknown, С. 5731 - 5759

Опубликована: Март 24, 2025

Язык: Английский

Процитировано

0

Functional Evolution of Gold Nanoclusters under Light‐Induction: From Fluorescence to Multi‐Enzyme Mimetic Transition DOI Open Access
Jing Yang,

Ruishu Xu,

Haiyan Li

и другие.

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 26, 2025

Gold nanoclusters (AuNCs) exhibit unique physicochemical properties but their functional transitions under external stimuli remain underexplored. This study reveals that ultraviolet (UV) irradiation triggers structural evolution in AuNCs, causing fluorescence loss while activating dual enzyme-mimetic activities. UV-induced particle enlargement and surface restructuring endow AuNCs with peroxidase-like (POD-like) laccase-like functionalities. The POD-like activity enables sensitive glucose detection human serum, the capability facilitates simultaneous degradation of phenolic pollutants wastewater. These light-responsive transformations demonstrate AuNCs' dynamic adaptability, bridging intrinsic catalytic properties. findings elucidate photo-regulation mechanisms nanomaterial functionality, proposing a novel strategy for designing multifunctional nanosystems applicable biosensing environmental remediation. work advances development adaptive nanomaterials programmable features biomedical ecological applications.

Язык: Английский

Процитировано

0

A nearly perfect icosahedral Ir@Au12 superatom with superior photoluminescence obtained by ligand engineering DOI Creative Commons
Katsuya Mutoh,

T. Yahagi,

Shinjiro Takano

и другие.

Chemical Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

A nearly perfect icosahedral Ir@Au 12 superatom was formed using a diphosphine ligand with benzo[ b ]phosphindole rings. The exhibited bright photoluminescence due to the symmetric structure rigidified core.

Язык: Английский

Процитировано

0

Gold Nanocrystals and Conjugated Polymer-Wrapped Single-Walled Carbon Nanotube Composites for Catalyzing CO2 Electroreduction DOI Creative Commons
Yueying Li, Ngoc Kim Dang,

Guorui Gao

и другие.

ACS Applied Nano Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 18, 2025

Язык: Английский

Процитировано

0