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Xu H, Liu P, Zhang W, Wang Q, Yang Y. Structure, stability, electronic and magnetic properties of monometallic Pd, Pt, and bimetallic Pd-Pt core–shell nanoparticles. Chem Phys 2020. [DOI: 10.1016/j.chemphys.2020.110953] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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2
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Baletto F. Structural properties of sub-nanometer metallic clusters. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2019; 31:113001. [PMID: 30562724 DOI: 10.1088/1361-648x/aaf989] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
At the nanoscale, the investigation of structural features becomes fundamental as we can establish relationships between cluster geometries and their physicochemical properties. The peculiarity lies in the variety of shapes often unusual and far from any geometrical and crystallographic intuition clusters can assume. In this respect, we should treat and consider nanoparticles as a new form of matter. Nanoparticle structures depend on their size, chemical composition, ordering, as well as external conditions e.g. synthesis method, pressure, temperature, support. On top of that, at finite temperatures nanoparticles can fluctuate among different structures, opening new and exciting horizons for the design of optimal nanoparticles for advanced applications. This article aims to overview geometrical features of transition metal clusters and of their various rearrangements.
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Affiliation(s)
- Francesca Baletto
- Physics Department, King's College London, WC2R 2LS, London, United Kingdom
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Gopalan AI, Muthuchamy N, Lee KP. A novel bismuth oxychloride-graphene hybrid nanosheets based non-enzymatic photoelectrochemical glucose sensing platform for high performances. Biosens Bioelectron 2017; 89:352-360. [DOI: 10.1016/j.bios.2016.07.017] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 07/07/2016] [Indexed: 12/18/2022]
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Keunen R, Cathcart N, Kitaev V. Plasmon mediated shape and size selective synthesis of icosahedral silver nanoparticles via oxidative etching and their 1-D transformation to pentagonal pins. NANOSCALE 2014; 6:8045-8051. [PMID: 24910249 DOI: 10.1039/c4nr01477d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A size- and shape-selective synthesis of pentagonally twinned silver icosahedral nanoparticles (AgIhNPs), one of the five platonic solid morphologies, has been developed by integrating three key factors: nuclei templating by copper, photochemical development using violet LED light and chemical oxidative etching. The presence of copper is essential for AgIhNP shape selection via the promotion of icosahedral nuclei in precursor NPs. Violet light (401-410 nm) is crucial to promote plasmonic selection of near-spherical AgIhNPs. Oxidative etching with hydrogen peroxide and photochemical reduction with citrate establishes a red-ox equilibrium for the photochemical selection of AgIhNPs. The addition of chloride ions improves size- and shape-selectivity. Finally, the demonstration of 1-D growth of AgIhNPs to pentagonal pins initiated at AgIhNP pentagonal-twinned defects highlights a universal role of twinned defects for the formation of anisotropic nanoparticles.
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Affiliation(s)
- R Keunen
- Department of Chemistry, Wilfrid Laurier University, 75 University Ave. W., Waterloo, Ontario N2L 3C5, Canada.
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Borbón-González DJ, Fortunelli A, Barcaro G, Sementa L, Johnston RL, Posada-Amarillas A. Global Minimum Pt13M20 (M = Ag, Au, Cu, Pd) Dodecahedral Core–Shell Clusters. J Phys Chem A 2013; 117:14261-6. [DOI: 10.1021/jp410079t] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Dora J. Borbón-González
- Departamento de Matemáticas, Universidad de Sonora, Blvd. Luis Encinas & Rosales, 83000 Hermosillo, Sonora, México
| | | | - Giovanni Barcaro
- CNR, Consiglio Nazionale delle Ricerche, v. G. Moruzzi 1, Pisa 56124, Italy
| | - Luca Sementa
- CNR, Consiglio Nazionale delle Ricerche, v. G. Moruzzi 1, Pisa 56124, Italy
| | - Roy L. Johnston
- School
of Chemistry, University of Birmingham, Edgbaston, B15 2TT Birmingham, United Kingdom
| | - Alvaro Posada-Amarillas
- Departamento de Investigación en Física, Universidad de Sonora, Blvd. Luis Encinas & Rosales, 83000 Hermosillo, Sonora, México
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Temperature effects in carbon monoxide and methanol electrooxidation on platinum–ruthenium: influence of grain boundaries. J Solid State Electrochem 2013. [DOI: 10.1007/s10008-013-2071-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Dass A. Nano-scaling law: geometric foundation of thiolated gold nanomolecules. NANOSCALE 2012; 4:2260-3. [PMID: 22362222 DOI: 10.1039/c2nr11749e] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Thiolated gold nanomolecules show a power correlation between the number of gold atoms and the thiolate ligands with a 2/3 scaling similar to Platonic and Archimedean solids. Nanomolecule stability is influenced by a universal geometric factor that is foundational to its stability through the Euclidean surface rule, in addition to the electronic shell closing factor and staple motif requirements.
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Affiliation(s)
- Amala Dass
- Department of Chemistry and Biochemistry, University of Mississippi, 352 Coulter Hall, University, Mississippi 38677, USA.
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Guisbiers G, Abudukelimu G, Hourlier D. Size-dependent catalytic and melting properties of platinum-palladium nanoparticles. NANOSCALE RESEARCH LETTERS 2011; 6:396. [PMID: 21711923 PMCID: PMC3211490 DOI: 10.1186/1556-276x-6-396] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Accepted: 05/26/2011] [Indexed: 05/27/2023]
Abstract
While nanocatalysis is a very active field, there have been very few studies in the size/shape-dependent catalytic properties of transition metals from a thermodynamical approach. Transition metal nanoparticles are very attractive due their high surface to volume ratio and their high surface energy. In particular, in this paper we focus on the Pt-Pd catalyst which is an important system in catalysis. The melting temperature, melting enthalpy, and catalytic activation energy were found to decrease with size. The face centered cubic crystal structure of platinum and palladium has been considered in the model. The shape stability has been discussed. The phase diagram of different polyhedral shapes has been plotted and the surface segregation has been considered. The model predicts a nanoparticle core rich in Pt surrounded by a layer enriched in Pd. The Pd segregation at the surface strongly modifies the catalytic activation energy compared to the non-segregated nanoparticle. The predictions were compared with the available experimental data in the literature. PACS: 65.80-g; 82.60.Qr; 64.75.Jk.
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Affiliation(s)
- Grégory Guisbiers
- Institute of Mechanics, Materials and Civil Engineering, Catholic University of Louvain, 2 Place Sainte Barbe, 1348 Louvain-La-Neuve, Belgium
| | - Gulmira Abudukelimu
- Yili Normal University, 298 Jie Fang Lu Street, Yi Ning Shi, Xinjiang, China
| | - Djamila Hourlier
- Institute of Electronics, Microelectronics and Nanotechnology, Scientific City, Avenue Henri Poincaré BP60069, 59652 Villeneuve d'Ascq, France
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Filipiak DJ, Azam A, Leong TG, Gracias DH. Hierarchical self-assembly of complex polyhedral microcontainers. JOURNAL OF MICROMECHANICS AND MICROENGINEERING : STRUCTURES, DEVICES, AND SYSTEMS 2009; 19:1-6. [PMID: 20161118 PMCID: PMC2740998 DOI: 10.1088/0960-1317/19/7/075012] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The concept of self-assembly of a two-dimensional (2D) template to a three-dimensional (3D) structure has been suggested as a strategy to enable highly parallel fabrication of complex, patterned microstructures. We have previously studied the surface tension based self-assembly of patterned, microscale polyhedral containers (cubes, square pyramids and tetrahedral frusta). In this paper, we describe the observed hierarchical self-assembly of more complex, patterned polyhedral containers in the form of regular dodecahedra and octahedra. The hierarchical design methodology, combined with the use of self-correction mechanisms, was found to greatly reduce the propagation of self-assembly error that occurs in these more complex systems. It is a highly effective way to mass-produce patterned, complex 3D structures on the microscale and could also facilitate encapsulation of cargo in a parallel and cost-effective manner. Furthermore, the behavior that we have observed may be useful in the assembly of complex systems with large numbers of components.
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Affiliation(s)
- David J. Filipiak
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, Maryland 21218
| | - Anum Azam
- Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, Maryland 21218
| | - Timothy G. Leong
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, Maryland 21218
| | - David H. Gracias
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, Maryland 21218
- Department of Chemistry, The Johns Hopkins University, Baltimore, Maryland 21218
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Jeong GH, Kim M, Lee YW, Choi W, Oh WT, Park QH, Han SW. Polyhedral Au Nanocrystals Exclusively Bound by {110} Facets: The Rhombic Dodecahedron. J Am Chem Soc 2009; 131:1672-3. [DOI: 10.1021/ja809112n] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gyoung Hwa Jeong
- Department of Chemistry, Research Institute of Natural Science, Environmental Biotechnology National Core Research Center, Gyeongsang National University, Jinju 660-701, Korea, and Department of Physics, Korea University, Seoul 136-701, Korea
| | - Minjung Kim
- Department of Chemistry, Research Institute of Natural Science, Environmental Biotechnology National Core Research Center, Gyeongsang National University, Jinju 660-701, Korea, and Department of Physics, Korea University, Seoul 136-701, Korea
| | - Young Wook Lee
- Department of Chemistry, Research Institute of Natural Science, Environmental Biotechnology National Core Research Center, Gyeongsang National University, Jinju 660-701, Korea, and Department of Physics, Korea University, Seoul 136-701, Korea
| | - Wonjun Choi
- Department of Chemistry, Research Institute of Natural Science, Environmental Biotechnology National Core Research Center, Gyeongsang National University, Jinju 660-701, Korea, and Department of Physics, Korea University, Seoul 136-701, Korea
| | - Won Taek Oh
- Department of Chemistry, Research Institute of Natural Science, Environmental Biotechnology National Core Research Center, Gyeongsang National University, Jinju 660-701, Korea, and Department of Physics, Korea University, Seoul 136-701, Korea
| | - Q-Han Park
- Department of Chemistry, Research Institute of Natural Science, Environmental Biotechnology National Core Research Center, Gyeongsang National University, Jinju 660-701, Korea, and Department of Physics, Korea University, Seoul 136-701, Korea
| | - Sang Woo Han
- Department of Chemistry, Research Institute of Natural Science, Environmental Biotechnology National Core Research Center, Gyeongsang National University, Jinju 660-701, Korea, and Department of Physics, Korea University, Seoul 136-701, Korea
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