Recent Progress in Synthesis of Nano- and Atomic-Sized Catalysts

Sharma, R.

doi:10.1021/bk-2020-1359.ch003

Cited by 4 publications

(3 citation statements)

References 239 publications

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“…High-quality nanoscale catalysts are produced with precise morphologies, such as crucial internal surface areas with excess active sites, and easy doping of heteroatoms can tune the catalyst exceptionally and act as robust heterogeneous catalysts, catalyst supports, and co-catalysts for many catalytic reactions. [153] Lee et al produced bimetallic MOF alloys via a solvent-free mechanical milling process using [Fe(1,2,3-triazole) 2 ] and [Cu(1,2,3triazole) 2 ]. They formed FeCu 1−x.y alloys, with FeCu -50.50-1000 exhibiting superior ORR activity, stability, and resistance to Me-OH poisoning compared to Pt/C and parent MOFs.…”

Section: Mof-derived Synthesismentioning

confidence: 99%

Bimetallic Nanoalloy Catalysts for Green Energy Production: Advances in Synthesis Routes and Characterization Techniques

Ashraf

Liu

Wei

et al. 2023

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Bimetallic Nanoalloy catalysts have diverse uses in clean energy, sensing, catalysis, biomedicine, and energy storage, with some supported and unsupported catalysts. Conventional synthetic methods for producing bimetallic alloy nanoparticles often produce unalloyed and bulky particles that do not exhibit desired characteristics. Alloys, when prepared with advanced nanoscale methods, give higher surface area, activity, and selectivity than individual metals due to changes in their electronic properties and reduced size. This review demonstrates the synthesis methods and principles to produce and characterize highly dispersed, well‐alloyed bimetallic nanoalloy particles in relatively simple, effective, and generalized approaches and the overall existence of conventional synthetic methods with modifications to prepare bimetallic alloy catalysts. The basic concepts and mechanistic understanding are represented with purposely selected examples. Herein, the enthralling properties with widespread applications of nanoalloy catalysts in heterogeneous catalysis are also presented, especially for Hydrogen Evolution Reaction (HER), Oxidation Reduction Reaction (ORR), Oxygen Evolution Reaction (OER), and alcohol oxidation with a particular focus on Pt and Pd‐based bimetallic nanoalloys and their numerous fields of applications. The high entropy alloy is described as a complicated subject with an emphasis on laser‐based green synthesis of nanoparticles and, in conclusion, the forecasts and contemporary challenges for the controlled synthesis of nanoalloys are addressed.

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Section: Mof-derived Synthesismentioning

confidence: 99%

Bimetallic Nanoalloy Catalysts for Green Energy Production: Advances in Synthesis Routes and Characterization Techniques

Ashraf

Liu

Wei

et al. 2023

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“…11 Even before application, nanocluster synthesis is also performed via a wide variety of techniques and temperatures. 12 For example, experimental techniques for the production of metallic nanoclusters include the following: (i) Templatebased approaches, which use molecular templates to induce aggregation of metallic ions at ambient temperatures. 13,14 (ii) Electrochemical techniques which involve electrical deposition of metallic ions from a solution on a surface at a very slow rate and can be used to produce very small nanoclusters.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Framework Based on Molecular Dynamics and Data Mining Analyses for the Study of Potential Energy Surfaces of Finite-Size Particles

Mendonça

Calderan

Lourenço

et al. 2022

J. Chem. Inf. Model.

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Nanoclusters are remarkably promising for the capture and activation of small molecules for fuel production or as precursors for other chemicals of high commercial value. Since this process occurs under a wide variety of experimental conditions, an improved atomistic understanding of the stability and phase transitions of these systems will be key to the development of successful technological applications. In this work, we proposed a theoretical framework to explore the potential energy surface and configuration space of nanoclusters to map the most important morphologies presented by those systems and the phase transitions between them. A fully automated process was developed, which combines global optimization techniques, classical molecular dynamics, and unsupervised machine learning algorithms. To showcase these capabilities of the approach, we explored the example of copper nanoclusters (Cu n ) where n = 13, 38, 55, 75, 98, 102, and 147. We not only reported a graphical potential energy surface for each size, but also explored the topology of the configuration space via structural and thermodynamic analyses. The effect of size on the potential energy surface and the critical temperature for solid−liquid phase transitions were also reported, highlighting the impact of magic numbers on those quantities.

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“…The oxygen reduction reaction (ORR) of the cathode plays an important role in sustainable energy conversion and storage devices, including fuel cells and metal–air batteries. − The device performance highly depends on the cathodic electrocatalyst which serves as a crucial way to accelerate reaction kinetics and improve selectivity of the electrochemical process. The commercialized platinum (Pt) catalyst has been widely recognized as the most efficient ORR catalyst. − However, its practical applications are hindered due to its scarcity, high costs, sensitivity to impurities, and poor stability . This has greatly motivated research communities to develop electrocatalysts with high ORR activity and efficiency and low costs, such as various nonprecious metal materials, including transition metal oxides, sulfides, phosphides, and carbides. − …”

Section: Introductionmentioning

confidence: 99%

Highly Active Atomically Dispersed Co–N_x Sites Anchored on Ultrathin N-Doped Carbon Nanosheets with Durability Oxygen Reduction Reaction of Zinc–Air Batteries

Wang

Yuan

et al. 2021

ACS Sustainable Chem. Eng.

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Highly efficient and low-cost oxygen reduction reaction electrocatalysts play key roles in the development of advanced energy conversion and storage devices, such as fuel cells and metal–air batteries. Herein, a facile strategy of synthesizing cobalt single atoms anchored on an ultrathin N-doped carbon nanosheet electrocatalyst (marked as CoSAs/N-CNS) via an in situ g-C3N4 template strategy was reported. Impressively, benefiting from highly active Co–Nx sites and highly porous and ultrathin nanosheet morphology which has rich edges and more three-phase boundaries, the as-synthesized CoSAs/N-CNS exhibits markedly enhanced ORR activities under alkaline conditions with half-wave potential (E 1/2) as high as 0.91 V vs RHE, as well as durability of ∼67 h. Furthermore, compared with Pt/C, the CoSAs/N-CNS-based Zn–air battery presents outstanding discharge–charge performance, larger power density of 157.7 mW cm–2, and robust durability with a slight decay after 150 h (900 cycles). The experimental and theoretical results fully show the advantages of CoSAs/N-CNS, which also provides a new insight for the design and development of high-performance atomically dispersed metal active site electrocatalysts toward ORR.

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Recent Progress in Synthesis of Nano- and Atomic-Sized Catalysts

Cited by 4 publications

References 239 publications

Bimetallic Nanoalloy Catalysts for Green Energy Production: Advances in Synthesis Routes and Characterization Techniques

Bimetallic Nanoalloy Catalysts for Green Energy Production: Advances in Synthesis Routes and Characterization Techniques

Theoretical Framework Based on Molecular Dynamics and Data Mining Analyses for the Study of Potential Energy Surfaces of Finite-Size Particles

Highly Active Atomically Dispersed Co–N_x Sites Anchored on Ultrathin N-Doped Carbon Nanosheets with Durability Oxygen Reduction Reaction of Zinc–Air Batteries

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Recent Progress in Synthesis of Nano- and Atomic-Sized Catalysts

Cited by 4 publications

References 239 publications

Bimetallic Nanoalloy Catalysts for Green Energy Production: Advances in Synthesis Routes and Characterization Techniques

Bimetallic Nanoalloy Catalysts for Green Energy Production: Advances in Synthesis Routes and Characterization Techniques

Theoretical Framework Based on Molecular Dynamics and Data Mining Analyses for the Study of Potential Energy Surfaces of Finite-Size Particles

Highly Active Atomically Dispersed Co–Nx Sites Anchored on Ultrathin N-Doped Carbon Nanosheets with Durability Oxygen Reduction Reaction of Zinc–Air Batteries

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Product

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Highly Active Atomically Dispersed Co–N_x Sites Anchored on Ultrathin N-Doped Carbon Nanosheets with Durability Oxygen Reduction Reaction of Zinc–Air Batteries