Recent advances in the synthesis and catalytic applications of ligand-protected, atomically precise metal nanoclusters

Fang, Jun; Zhang, Bin; Yao, Qiaofeng; Yang, Yang; Xie, Jianping; Yan, Ning

doi:10.1016/j.ccr.2016.05.003

Cited by 309 publications

(201 citation statements)

References 281 publications

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“…The stability is a common issue in the application of nanoparticles as a catalyst, as the nanoparticles tend to aggregate and lead to gradual reduction in catalytic activity [30]. In the following study, the CB [7] was used for the stabilization of gold nanoparticles because cucurbit[n]urils have a good affinity for gold, and could prevent the aggregation [26].…”

Section: Resultsmentioning

confidence: 99%

A Comparison Reduction of 4-Nitrophenol by Gold Nanospheres and Gold Nanostars

Yang

Liu

et al. 2017

Catalysts

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Abstract:In order to investigate structure-property relationships, the catalytic properties of gold nanoparticles were evaluated in the reduction of 4-nitrophenol by NaBH 4 . Using catalyst suspensions with identical amounts of gold, the following key results were obtained: first, the nanostars showed increased activity as compared to spherical gold nanoparticles; second, larger gold nanostars showed higher activity, likely because of the abundance of flat/spiky features on these particles, which show high metal utilization; third, treatment of the nanostar colloid with cucurbit [7]uril can be used to balance catalyst stability and activity; fourth, as expected from the decreasing surface atom fraction, the specific activity of the spherical nanoparticles decreased with increasing particle size.

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Section: Resultsmentioning

confidence: 99%

A Comparison Reduction of 4-Nitrophenol by Gold Nanospheres and Gold Nanostars

Yang

Liu

et al. 2017

Catalysts

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“…Gold sub-nanoclusters have attracted considerable interest. [150] Our group has prepared the smallest of them, including the mononuclear neutral formally gold(0) complex 78,dinuclear gold(0) 79, [151] and the trinuclear mixed-valence gold(I)/gold(0) cluster 80. [152] On the other hand, since their discovery by Fischer and Berke in 1976, [153] al ot of studies have been devoted to allenylidene transition-metal frameworks because of their potential uses as molecular wires and electronic materials.Byusing CAACligands,wereported the preparation of the first neutral (allenylidene)(carbene)gold-(0) complex 81.…”

Section: Angewandte Chemiementioning

confidence: 99%

Cyclic (Alkyl)(amino)carbenes (CAACs): Recent Developments

et al. 2017

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Discovered in 2005, cyclic (alkyl)(amino)carbenes (CAACs) are among the most nucleophilic (σ donating) and also electrophilic (π-accepting) stable carbenes known to date. These properties allow them to activate a variety of small molecules and enthalpically strong bonds, to stabilize highly reactive main-group and transition-metal diamagnetic and paramagnetic species, and to bind strongly to metal centers, which gives rise to very robust catalysts. The most important results published up to the end of 2013 are briefly summarized, while the majority of this Review focuses on findings reported within the last three years.

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“…Factors for thesei mprovements include high diffusivity of the substrate due to mesoporous formation, prevention of agglomeration of Au NPs, and improvedo xygen activation on abundant defects ites. This approach can be easily applicable for large-scale industrial production, but furthers tudies [23][24][25][26] to precisely controlt he sizes of Au NPs immobilizedo nt he mesoporousT iO 2 will be required to realize an improved performance.…”

Section: Discussionmentioning

confidence: 99%

Gold Nanoparticles Supported on Mesoporous Titania Thin Films with High Loading as a CO Oxidation Catalyst

Akita¹,

Amemiya²,

Matsumoto³

et al. 2017

Chemistry An Asian Journal

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In the present work, 2.4 nm gold nanoparticles (Au NPs) are uniformly dispersed on mesoporous titania thin films which are structurally tuned by controlling the calcination temperature. The gold content of the catalyst is as high as 27.8 wt %. To our knowledge, such a high loading of Au NPs with good dispersity has not been reported until now. Furthermore, the reaction rate of the gold particles is enhanced by one order of magnitude when supported on mesoporous titania compared to non-porous titania. This significant improvement can be explained by an increase in the diffusivity of the substrate due to the presence of mesopores, the resistance to agglomeration, and improved oxygen activation.

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Recent advances in the synthesis and catalytic applications of ligand-protected, atomically precise metal nanoclusters

Cited by 309 publications

References 281 publications

A Comparison Reduction of 4-Nitrophenol by Gold Nanospheres and Gold Nanostars

A Comparison Reduction of 4-Nitrophenol by Gold Nanospheres and Gold Nanostars

Cyclic (Alkyl)(amino)carbenes (CAACs): Recent Developments

Gold Nanoparticles Supported on Mesoporous Titania Thin Films with High Loading as a CO Oxidation Catalyst

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