Exfoliated MoS2 supported Au–Pd bimetallic nanoparticles with core–shell structures and superior peroxidase-like activities

RSC Advances ◽  
2015 ◽  
Vol 5 (14) ◽  
pp. 10352-10357 ◽  
Author(s):  
Zhen Sun ◽  
Qingshan Zhao ◽  
Guanghui Zhang ◽  
Yang Li ◽  
Guoliang Zhang ◽  
...  
Keyword(s):  
Bimetallic Nanoparticles ◽  
Shell Structures ◽  
Core Shell ◽  
Mass Ratios ◽  
Absorbance Spectra

The preparation of Au–Pd/MoS2 hybrids and evolutions of absorbance spectra changes at 652 nm with different Au–Pd mass ratios.

PdPt bimetallic nanoparticles enabled by shape control with halide ions and their enhanced catalytic activities

Nanoscale ◽  
2016 ◽  
Vol 8 (7) ◽  
pp. 3962-3972 ◽  
Author(s):  
Jinfeng Zhang ◽  
Lei Wan ◽  
Lei Liu ◽  
Yida Deng ◽  
Cheng Zhong ◽  
...  
Keyword(s):  
Shape Control ◽  
Bimetallic Nanoparticles ◽  
Shell Structures ◽  
Core Shell ◽  
Halide Ions ◽  
Catalytic Activities

The morphologies of PdPt nanoparticles with various core–shell structures could be controlled by altering the participation of different halide ions.

Phase Transfer Identification of Core–Shell Structures in Ag–Au Bimetallic Nanoparticles

2005 ◽  
Vol 5 (7) ◽  
pp. 1095-1100 ◽  
Author(s):  
J. Yang ◽  
Jim Yang Lee ◽  
L. X. Chen ◽  
Heng-Phon Too
Keyword(s):  
Bimetallic Nanoparticles ◽  
Phase Transfer ◽  
Shell Structures ◽  
Core Shell

Phase-Transfer Identification of Core-Shell Structures in Bimetallic Nanoparticles

Plasmonics ◽  
2006 ◽  
Vol 1 (1) ◽  
pp. 67-78 ◽  
Author(s):  
Jun Yang ◽  
Jim Yang Lee ◽  
Heng-Phon Too
Keyword(s):  
Bimetallic Nanoparticles ◽  
Phase Transfer ◽  
Shell Structures ◽  
Core Shell

Graphene supported Au-Pd bimetallic nanoparticles with core-shell structures and superior peroxidase-like activities

2011 ◽  
Vol 21 (44) ◽  
pp. 17658 ◽  
Author(s):  
Hongyu Chen ◽  
Yang Li ◽  
Fengbao Zhang ◽  
Guoliang Zhang ◽  
Xiaobin Fan
Keyword(s):  
Bimetallic Nanoparticles ◽  
Shell Structures ◽  
Core Shell

Structural Characterization of Nanoparticles Obtained by a Polyol Synthesis in the Bimetallic System Pt-Pd

2012 ◽  
Vol 1372 ◽  
Author(s):  
A. F. García-Ruiz ◽  
J. J. Velázquez Salazar ◽  
R. Esparza ◽  
N. Castillo
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Bimetallic Nanoparticles ◽  
Synthesis Method ◽  
Shell Structures ◽  
Polyol Synthesis ◽  
Core Shell ◽  
Thermal Methods ◽  
Transmission Electron ◽  
Bimetallic System

ABSTRACTA modified polyol synthesis has been utilized to study the different structures obtained in the bimetallic system of platinum (Pt) and palladium (Pd). Some results are shown in this work. Thermal methods under refluxing, carrying on the reaction up to 285 ºC, have been assayed to reduce metallic salts using ethylene glycol (EG) as reducer and polyvinylpyrrolidone (PVP) as protective reagent of the formed bimetallic nanoparticles. The special core-shell structure has been observed in these bimetallic nanoparticles, whose synthesis was assisted by Ag, showing polyhedral shapes. The average diameter size of the core has been estimated at 10 nm, and the diameter size of the shell in 13 nm, consequently the thickness of the shell is around 1.5 nm. Nanoparticles were structurally characterized with transmission electron microscopy (TEM), scanning transmission electron microscopy (STEM) equipped with detector to generate high angle annular dark field (HAADF) images. This kind of structures have been studied and utilized to increase successfully the catalytic properties of monometallic nanoparticles of Pt or Pd according to other works. Here, the synthesis procedure is described; as the main results, several images are presented showing the obtained bimetallic core-shell structures and their fast Fourier transform (FFT), and also the size and the elemental analysis of the nanoparticles are reported, concluding that this synthesis method is very efficient for preparing bimetallic core shell structures.

Atomic Structure of Bimetallic Nanoparticles in PtAg/C Catalysts: Determination of Components Distribution in the Range from Disordered Alloys to “Core–Shell” Structures

2015 ◽  
Vol 119 (6) ◽  
pp. 3217-3227 ◽  
Author(s):  
Vasiliy V. Pryadchenko ◽  
Vasiliy V. Srabionyan ◽  
Elena B. Mikheykina ◽  
Leon A. Avakyan ◽  
Vadim Y. Murzin ◽  
...  
Keyword(s):  
Atomic Structure ◽  
Bimetallic Nanoparticles ◽  
Shell Structures ◽  
Core Shell ◽  
Disordered Alloys

SELF-ORGANIZATION OF METAL NANOPARTICLES AND ITS APPLICATION TO SYNTHESES OF Pd/Ag/Rh TRIMETALLIC NANOPARTICLE CATALYSTS WITH TRIPLE CORE/SHELL STRUCTURES

2002 ◽  
Vol 01 (05n06) ◽  
pp. 397-401 ◽  
Author(s):  
NAOKI TOSHIMA ◽  
YUKIHIDE SHIRAISHI ◽  
TORU MATSUSHITA ◽  
HISAYOSHI MUKAI ◽  
KAZUTAKA HIRAKAWA
Keyword(s):  
Metal Nanoparticles ◽  
Shell Structure ◽  
Ag Nanoparticles ◽  
Precious Metal ◽  
Bimetallic Nanoparticles ◽  
Active Catalyst ◽  
Shell Structures ◽  
Self Organization ◽  
Core Shell ◽  
Nanoparticle Catalysts

Self-organization of metal nanoparticles, which is observed by mixing Ag nanoparticles and precious metal nanoparticles, is applied to the synthesis of Pd/Ag/Rh trimetallic nanoparticles having a Pd-core/Ag-interlayer/Rh-shell structure. These trimetallic nanoparticles work as a more active catalyst for hydrogenation of olefin than the corresponding monometallic and bimetallic nanoparticles.

scholarly journals Light-Scattering Simulations from Spherical Bimetallic Core–Shell Nanoparticles

Micromachines ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 359
Author(s):  
Francesco Ruffino
Keyword(s):  
Optical Properties ◽  
Light Scattering ◽  
Bimetallic Nanoparticles ◽  
Dominant Role ◽  
Scattered Light ◽  
Specific Interaction ◽  
Surface Enhanced Raman Spectroscopy ◽  
Localized Surface Plasmon ◽  
Core Shell ◽  
The Core

Bimetallic nanoparticles show novel electronic, optical, catalytic or photocatalytic properties different from those of monometallic nanoparticles and arising from the combination of the properties related to the presence of two individual metals but also from the synergy between the two metals. In this regard, bimetallic nanoparticles find applications in several technological areas ranging from energy production and storage to sensing. Often, these applications are based on optical properties of the bimetallic nanoparticles, for example, in plasmonic solar cells or in surface-enhanced Raman spectroscopy-based sensors. Hence, in these applications, the specific interaction between the bimetallic nanoparticles and the electromagnetic radiation plays the dominant role: properties as localized surface plasmon resonances and light-scattering efficiency are determined by the structure and shape of the bimetallic nanoparticles. In particular, for example, concerning core-shell bimetallic nanoparticles, the optical properties are strongly affected by the core/shell sizes ratio. On the basis of these considerations, in the present work, the Mie theory is used to analyze the light-scattering properties of bimetallic core–shell spherical nanoparticles (Au/Ag, AuPd, AuPt, CuAg, PdPt). By changing the core and shell sizes, calculations of the intensity of scattered light from these nanoparticles are reported in polar diagrams, and a comparison between the resulting scattering efficiencies is carried out so as to set a general framework useful to design light-scattering-based devices for desired applications.

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