Preparation of functionalized platinum nanoparticles: a comparison of different methods and reagents

Liu, Guangliang; Arellano-Jiménez, M. Josefina; Carter, C. Barry; Agrios, Alexander G.

doi:10.1007/s11051-013-1744-9

Cited by 8 publications

(9 citation statements)

References 45 publications

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“…143,144 The preparation of PtNPs has been motivated by their catalytic 100 properties. 145 In fact, PtNPs play an important role in a wide variety of catalytic processes and for fuel cells applications. 146,147 Also, PtNPs deposited on carbon nanotubes show excellent dehydrogenation properties.…”

Section: Platinummentioning

confidence: 99%

Self-assembled monolayers of thiolates on metals: a review article on sulfur-metal chemistry and surface structures

et al. 2014

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Section: Platinummentioning

confidence: 99%

Self-assembled monolayers of thiolates on metals: a review article on sulfur-metal chemistry and surface structures

et al. 2014

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“…182 The surfactant-free NPs thus obtained typically show very long term colloidal stability for several months. 97,188,235 This is explained by the high viscosity of the solvent and precious metal NP surface functionalization with OH/OHand CO species. 188,189 The mechanism of the polyol synthesis itself is still subject to debate and the formation of glycolic acid / glycolate form by ethylene glycol oxidation while the metal precursor is reduced is not excluded to contribute to the stabilization.…”

Section: Methodsmentioning

confidence: 99%

“…272 The cross comparison of different synthetic strategies to develop a similar / same catalyst, however, is not common. 235,274 Such studies typically hardly bring fundamental insights, since any different step in the syntheses or any different chemical used, or their different concentrations, or even different lab consumables in some cases, can lead to a different outcomes. Nevertheless, it is important to stress that seemingly unimportant experimental parameters can have a strong effect on the catalyst properties, such as the recently observed cation effect in monoalcohols syntheses, 234 or the influence of the gas atmosphere during synthesis.…”

Section: Iii2 Synthesis Related Effectsmentioning

confidence: 99%

Surfactant-free colloidal syntheses of precious metal nanoparticles for improved catalysts

Quinson

Kunz²,

Arenz

2022

Preprint

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Colloidal syntheses of nanomaterials offer multiple benefits to study, understand and optimize un-supported and supported catalysts. In particular, colloidal syntheses are relevant to synthetize (precious) metal nanoparticles. By separating the synthesis of the active phase nanoparticles from supporting steps, a deeper knowledge and a rational control on supported catalyst properties is gained. The effect of nanoparticle size, shape, composition, nature of support or metal loading on a support can be studied in more systematic ways. The fundamental knowledge gained paves the way for catalyst optimization by tuning the catalyst activity, selectivity, and stability. However, a major drawback is that most colloidal syntheses require the use of additives or surfactants, which are detrimental to most catalytic reactions since they typically block catalyst active sites. Surfactant removal typically adds complexity, can introduce a lack of reproducibility, is energy consuming, generates waste, and prevents the full exploitation of the many benefits of colloidal syntheses for catalysis. Several surfactant-free strategies to obtain stable colloidal nanoparticles are here reviewed. A focus is given to laser synthesis and processing of colloids (LSPC), solution plasma process (SPP), N,N-dimethylformamide (DMF), polyols, and recently reported mono-alcohols based syntheses. The relevance of these synthetic approaches for catalysis is detailed with a focus on heterogeneous catalysis and electro-catalysis.

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“…In the last two decades, the unprotected metal nanocluster formation mechanism in the alkaline EG method was studied by different groups [ 10 , 24 , 82 , 83 , 84 , 85 , 86 , 87 , 88 , 89 , 90 , 91 , 92 , 93 , 94 , 95 , 96 ], who came to different conclusions. A main difference between the different views is whether metal ion compound nanoparticles form first or the metal ions are reduced to zero valence metal atoms first [ 10 , 97 , 98 , 99 , 100 , 101 ].…”

Section: Introductionmentioning

confidence: 99%

Metal Nanoclusters Synthesized in Alkaline Ethylene Glycol: Mechanism and Application

Wang

Hao

2023

Nanomaterials

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The “unprotected” metal and alloy nanoclusters (UMCs) prepared by the alkaline ethylene glycol method, which are stabilized with simple ions and solvent molecules, have the advantages of a small particle size, a narrow size distribution, good stability, highly efficient preparation, easy separation, surface modification and transfer between different phases. They can be composited with diverse materials to prepare catalytic systems with controllable structures, providing an effective means of studying the different factors’ effects on the catalytic properties separately. UMCs have been widely used in the development of high-performance catalysts for a variety of functional systems. This paper will review the research progress on the formation mechanism of the unprotected metal nanoclusters, exploring the structure–function relationship of metal nanocluster catalysts and the preparation of excellent metal catalysts using the unprotected metal nanoclusters as building blocks or starting materials. A principle of the influence of carriers, ligands and modifiers in metal nanocluster catalysts on the catalytic properties is proposed.

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Preparation of functionalized platinum nanoparticles: a comparison of different methods and reagents

Cited by 8 publications

References 45 publications

Self-assembled monolayers of thiolates on metals: a review article on sulfur-metal chemistry and surface structures

Self-assembled monolayers of thiolates on metals: a review article on sulfur-metal chemistry and surface structures

Surfactant-free colloidal syntheses of precious metal nanoparticles for improved catalysts

Metal Nanoclusters Synthesized in Alkaline Ethylene Glycol: Mechanism and Application

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