Impact of the capping agent removal from Au NPs@MOF core-shell nanoparticles heterogeneous catalysts

2022 ◽  
Author(s):  
Shan Dai ◽  
Kieu Phung Ngoc ◽  
Laurence Grimaud ◽  
Sanjun Zhang ◽  
Antoine Tissot ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Heterogeneous Catalysts ◽  
Synergistic Effects ◽  
Core Shell ◽  
Capping Agent ◽  
Shell Nanoparticles ◽  
Au Nps ◽  
Capping Agents ◽  
Core Shell Nanoparticles

Metal nanoparticles encased in a MOF shell have shown remarkable properties in catalysis due to potential synergistic effects. However, capping agents, commonly used to prepare these nanoparticles, lower their reactivity...

scholarly journals Core–shell Pd–P@Pt–Ni nanoparticles with enhanced activity and durability as anode electrocatalyst for methanol oxidation reaction

RSC Advances ◽  
2022 ◽  
Vol 12 (4) ◽  
pp. 2246-2252
Author(s):  
Jiangbin Guo ◽  
Man Zhang ◽  
Jing Xu ◽  
Jun Fang ◽  
Shuiyuan Luo ◽  
...  
Keyword(s):  
Catalytic Properties ◽  
Synergistic Effects ◽  
Methanol Oxidation Reaction ◽  
Core Shell ◽  
Ni Nanoparticles ◽  
Shell Nanoparticles ◽  
The Core ◽  
Core Shell Nanoparticles ◽  
Nickel Species ◽  
Low Crystalline

The Pd–P@Pt–Ni core–shell nanoparticles consist of an amorphous core and a low-crystalline shell. They exhibit the excellent catalytic properties in MOR owing to the double synergistic effects from the core and the nickel species in the shell.

Aptamer based surface enhanced Raman scattering detection of adenosine using various core sizes of Au–Ag core–shell nanoparticles

RSC Advances ◽  
2014 ◽  
Vol 4 (50) ◽  
pp. 26251-26257 ◽  
Author(s):  
Fu-Hsiang Ko ◽  
Yu-Cheng Chang
Keyword(s):  
Raman Scattering ◽  
Core Shell ◽  
Silicon Substrates ◽  
Shell Nanoparticles ◽  
Au Nps ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Core Shell Nanoparticles ◽  
Growth Approach

The combination of the varied sizes of Au NPs and seeding growth approach can be exploited to control the sizes of Au–Ag core–shell NPs. The silicon substrates with self-assembled Au–Ag core–shell NPs can be used to detect adenosine by a structures-switch aptamer.

scholarly journals One Pot Synthesis of Au_ZnO Core-Shell Nanoparticles Using a Zn Complex Acting as ZnO Precursor, Capping and Reducing Agent During the Formation of Au NPs

2018 ◽  
Vol 2018 (43) ◽  
pp. 4659-4659 ◽  
Author(s):  
Annalinda Contino ◽  
Giuseppe Maccarrone ◽  
Luca Spitaleri ◽  
Lucia Torrisi ◽  
Giuseppe Nicotra ◽  
...  
Keyword(s):  
Reducing Agent ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
One Pot ◽  
Au Nps ◽  
One Pot Synthesis ◽  
Core Shell Nanoparticles

scholarly journals The Multifunctionally Graded System for a Controlled Size Effect on Iron Oxide–Gold Based Core-Shell Nanoparticles

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1695
Author(s):  
Bo-Wei Du ◽  
Chih-Yuan Chu ◽  
Ching-Chang Lin ◽  
Fu-Hsiang Ko
Keyword(s):  
Magnetic Field ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Au Nps ◽  
Size Dependent ◽  
Short Period ◽  
Frequency Magnetic Field ◽  
Delivery Platform ◽  
Core Shell Nanoparticles ◽  
Shielding Effects

We report that Fe3O4@Au core-shell nanoparticles (NPs) serve as a multifunctional molecule delivery platform. This platform is also suitable for sensing the doxorubicin (DOX) through DNA hybridization, and the amount of carried DOX molecules was determined by size-dependent Fe3O4@Au NPs. The limits of detection (LODs) for DOX was found to be 1.839 nM. In our approach, an Au nano-shell coating was coupled with a specially designed DNA sequence using thiol bonding. By means of a high-frequency magnetic field (HFMF), a high release percentage of such a molecule could be efficiently achieved in a relatively short period of time. Furthermore, the thickness increase of the Au nano-shell affords Fe3O4@Au NPs with a larger surface area and a smaller temperature increment due to shielding effects from magnetic field. The change of magnetic property may enable the developed Fe3O4@Au-dsDNA/DOX NPs to be used as future nanocarrier material. More importantly, the core-shell NP structures were demonstrated to act as a controllable and efficient factor for molecule delivery.

One Pot Synthesis of Au_ZnO Core-Shell Nanoparticles Using a Zn Complex Acting as ZnO Precursor, Capping and Reducing Agent During the Formation of Au NPs

2018 ◽  
Vol 2018 (43) ◽  
pp. 4678-4683 ◽  
Author(s):  
Annalinda Contino ◽  
Giuseppe Maccarrone ◽  
Luca Spitaleri ◽  
Lucia Torrisi ◽  
Giuseppe Nicotra ◽  
...  
Keyword(s):  
Reducing Agent ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
One Pot ◽  
Au Nps ◽  
One Pot Synthesis ◽  
Core Shell Nanoparticles

The Ag shell thickness effect of Au@Ag@SiO2 core–shell nanoparticles on the optoelectronic performance of dye sensitized solar cells

2016 ◽  
Vol 52 (11) ◽  
pp. 2390-2393 ◽  
Author(s):  
Yang Wang ◽  
Jin Zhai ◽  
Yanlin Song ◽  
Ling He
Keyword(s):  
Shell Thickness ◽  
Dye Sensitized Solar Cells ◽  
Thickness Effect ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Au Nps ◽  
Color Changes ◽  
Dye Sensitized ◽  
Core Shell Nanoparticles ◽  
Sensitized Solar Cells

The LSPR effect of Au@Ag@SiO2 core–shell–ultra-thin shell nanoparticles is finely tailored and tuned by varying the Ag shell thickness. The growth of silver shell onto Au NPs led to color changes from different tones of red to orange.

Self-driven microstructural evolution of Au@Pd core–shell nanoparticles for greatly enhanced catalytic performance during methanol electrooxidation

Nanoscale ◽  
2021 ◽  
Author(s):  
Yaxing Liu ◽  
Weiyin Li ◽  
Guizhe zhao ◽  
Gang Qin ◽  
Yuexia Li ◽  
...  
Keyword(s):  
Microstructural Evolution ◽  
Heterogeneous Catalysts ◽  
Catalytic Performance ◽  
Methanol Electrooxidation ◽  
Core Shell ◽  
Electrochemical Polarization ◽  
Shell Nanoparticles ◽  
Catalytic Materials ◽  
Core Shell Nanoparticles ◽  
Insight Into

The lack of direct insight into the microstructural evolution of catalytic materials under electrochemical polarization has inhibited the development of heterogeneous catalysts. By investigating a typical Au@Pd core–shell nanostructure, the...

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