Characterization and Catalytic Activity of Core−Shell Structured Gold/Palladium Bimetallic Nanoparticles Synthesized by the Sonochemical Method

2000 ◽  
Vol 104 (25) ◽  
pp. 6028-6032 ◽  
Author(s):  
Yoshiteru Mizukoshi ◽  
Taku Fujimoto ◽  
Yoshio Nagata ◽  
Ryuichiro Oshima ◽  
Yasuaki Maeda
Keyword(s):  
Catalytic Activity ◽  
Bimetallic Nanoparticles ◽  
Core Shell ◽  
Sonochemical Method

Adaptive kinetic Monte Carlo simulations of surface segregation in PdAu nanoparticles

Nanoscale ◽  
2019 ◽  
Vol 11 (21) ◽  
pp. 10524-10535 ◽  
Author(s):  
Lei Li ◽  
Xinyu Li ◽  
Zhiyao Duan ◽  
Randall J. Meyer ◽  
Rob Carr ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Catalytic Activity ◽  
Monte Carlo Method ◽  
Surface Segregation ◽  
Bimetallic Nanoparticles ◽  
Kinetic Monte Carlo ◽  
Core Shell ◽  
Kinetic Monte Carlo Method ◽  
Kinetic Monte Carlo Simulations ◽  
Pdau Nanoparticles

Surface segregation in bimetallic nanoparticles is critically important for their catalytic activity. Here, we use the adaptive kinetic Monte Carlo method to model the segregation dynamics in PdAu NPs over experimentally relevant time scales and demonstrate thermodynamically unfavorable Au@Pd core–shell and alloy NPs can be kinetically trapped at low temperature.

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.

Multiwalled carbon nanotube@reduced graphene oxide nanoribbon heterostructure: synthesis, intrinsic peroxidase-like catalytic activity, and its application in colorimetric biosensing

2015 ◽  
Vol 3 (8) ◽  
pp. 1624-1632 ◽  
Author(s):  
Jing Qian ◽  
Xingwang Yang ◽  
Zhenting Yang ◽  
Gangbing Zhu ◽  
Hanping Mao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Carbon Nanotube ◽  
Reduced Graphene Oxide ◽  
Multiwalled Carbon Nanotube ◽  
Core Shell ◽  
Multiwalled Carbon ◽  
Peroxidase Mimetic ◽  
Reduced Graphene ◽  
Colorimetric Biosensing

The MWCNT@rGONR core–shell heterostructure was proved to be a novel peroxidase mimetic and has been used for colorimetric biosensing of cholesterol.

Sign in / Sign up

Export Citation Format

Share Document