Toward the creation of high-performance heterogeneous catalysts by controlled ligand desorption from atomically precise metal nanoclusters

Kawawaki, Tokuhisa; Kataoka, Yuki; Hirata, Momoko; Iwamatsu, Yuki; Hossain, Sakiat; Negishi, Yuichi

doi:10.1039/d1nh00046b

Cited by 58 publications

(73 citation statements)

References 351 publications

(468 reference statements)

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“…As described above, alloying is extremely effective at improving the cocatalyst function. Recently, the synthesis of alloy NCs with precisely controlled chemical compositions by liquid-phase synthesis has become possible [ 244 , 245 , 246 , 247 , 248 , 249 , 250 , 251 , 252 , 253 , 254 , 255 , 256 , 257 , 258 , 259 , 260 , 261 , 262 , 263 , 264 , 265 , 266 , 267 , 268 , 269 , 270 , 271 , 272 , 273 , 274 , 275 , 276 , 277 , 278 , 279 , 280 , 281 , 282 , 283 ]. The use of these fine alloy NCs as precursors will allow precise control of the chemical composition of loaded metal NCs ( Figure 22 ), which is expected to provide an improved understanding of the factors that contribute to the enhanced activity induced by alloying [ 86 ].…”

Section: Control Of Cocatalystsmentioning

confidence: 99%

Development and Functionalization of Visible-Light-Driven Water-Splitting Photocatalysts

et al. 2022

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With global warming and the depletion of fossil resources, our fossil fuel-dependent society is expected to shift to one that instead uses hydrogen (H2) as a clean and renewable energy. To realize this, the photocatalytic water-splitting reaction, which produces H2 from water and solar energy through photocatalysis, has attracted much attention. However, for practical use, the functionality of water-splitting photocatalysts must be further improved to efficiently absorb visible (Vis) light, which accounts for the majority of sunlight. Considering the mechanism of water-splitting photocatalysis, researchers in the various fields must be employed in this type of study to achieve this. However, for researchers in fields other than catalytic chemistry, ceramic (semiconductor) materials chemistry, and electrochemistry to participate in this field, new reviews that summarize previous reports on water-splitting photocatalysis seem to be needed. Therefore, in this review, we summarize recent studies on the development and functionalization of Vis-light-driven water-splitting photocatalysts. Through this summary, we aim to share current technology and future challenges with readers in the various fields and help expedite the practical application of Vis-light-driven water-splitting photocatalysts.

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Section: Control Of Cocatalystsmentioning

confidence: 99%

Development and Functionalization of Visible-Light-Driven Water-Splitting Photocatalysts

et al. 2022

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“…The ligand shell allows improved substrate attraction and (stereo‐)selectivity but lowers the activity by a decreased surface accessibility (Figure 3 ). [ 17j , 19 ]…”

Section: Introductionmentioning

confidence: 99%

Catalytically Active Gold Nanomaterials Stabilized byN‐heterocyclic Carbenes

Eisen

Chin

Reithofer

2021

Chemistry An Asian Journal

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Solid supported or ligand capped gold nanomaterials (AuNMs) emerged as versatile and recyclable heterogeneous catalysts for a broad variety of conversions in the ongoing catalytic ′gold rush′. Existing at the border of homogeneous and heterogeneous catalysis, AuNMs offer the potential to merge high catalytic activity with significant substrate selectivity. Owing to their strong binding towards the surface atoms of AuMNs, NHCs offer tunable activation of surface atoms while maintaining selectivity and stability of the NM even under challenging conditions. This work summarizes well‐defined catalytically active NHC capped AuNMs including spherical nanoparticles and atom‐precise nanoclusters as well as the important NHC design choices towards activity and (stereo‐)selectivity enhancements.

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“…The development and combination of in situ techniques would be highly valuable to monitor the catalyst's change and understand the reaction mechanism. The well-defined and ligand-free NCs are greatly desired for the highest catalytic activity ( Jin et al., 2021a ; Shivhare et al., 2013 ; Fang et al., 2016 ; Kawawaki et al., 2021 ). Although ligand-free NCs can be obtained by reducing the pre-impregnated precursors of NCs inside MOFs channel, the atomic precision cannot be guaranteed because the preparation of atomically precise NCs involves the kinetically controlled reduction followed by size-focusing or a separation process.…”

Section: Discussionmentioning

confidence: 99%

Atomically precise metal nanoclusters meet metal-organic frameworks

Luo

Jin

2021

iScience

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Summary Significant progress has been made in both fields of atomically precise metal nanoclusters (NCs) and metal-organic frameworks (MOFs) in recent years. A promising direction is to integrate these two classes of materials for creating unique composites with improved properties for catalysis and other applications. NCs incorporated with MOFs exhibit an optimized catalytic performance in many catalytic reactions, in which MOFs play a vital supporting role or as cocatalysts. In this Perspective, we first provide a brief summary of the methods that have been developed for the preparation of NCs/MOF composites and the characteristics of these strategies are analyzed. Following that, some recent works are highlighted to demonstrate the crucial role of MOF matrices in the enhancement of NCs catalytic properties. Finally, we outline some potentially important aspects for future work. This Perspective is in hopes of stimulating more interest in the research on the integration of NCs with MOFs toward functional materials.

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Toward the creation of high-performance heterogeneous catalysts by controlled ligand desorption from atomically precise metal nanoclusters

Abstract: Ligand-protected metal nanoclusters controlled by atomic accuracy (i. e. atomically precise metal NCs) have recently attracted considerable attention as active sites in heterogeneous catalysts. Using these atomically precise metal NCs,...

Cited by 58 publications

References 351 publications

Development and Functionalization of Visible-Light-Driven Water-Splitting Photocatalysts

Development and Functionalization of Visible-Light-Driven Water-Splitting Photocatalysts

Catalytically Active Gold Nanomaterials Stabilized byN‐heterocyclic Carbenes

Atomically precise metal nanoclusters meet metal-organic frameworks

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