scholarly journals Facile Aqueous-Phase Synthesis of Bimetallic (AgPt, AgPd, and CuPt) and Trimetallic (AgCuPt) Nanoparticles

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 254 ◽  
Author(s):  
Zengmin Tang ◽  
Euiyoung Jung ◽  
Yejin Jang ◽  
Suk Ho Bhang ◽  
Jinheung Kim ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Metallic Nanoparticles ◽  
Reduction Method ◽  
Bimetallic Nanoparticles ◽  
Atomic Ratio ◽  
Core Shell ◽  
Phase Synthesis ◽  
Short Reaction Time ◽  
Core Shell Structure ◽  
Co Reduction

Multi-metallic nanoparticles continue to attract attention, due to their great potential in various applications. In this paper, we report a facile aqueous-phase synthesis for multi-metallic nanoparticles, including AgPt, AgPd, CuPt, and AgCuPt, by a co-reduction method within a short reaction time of 10 min. The atomic ratio of bimetallic nanoparticles was easily controlled by varying the ratio of each precursor. In addition, we found that AgCuPt trimetallic nanoparticles had a core-shell structure with an Ag core and CuPt shell.

In situ synthesis of Au–Pd bimetallic nanoparticles on amine-functionalized SiO2 for the aqueous-phase hydrodechlorination of chlorobenzene

RSC Advances ◽  
2014 ◽  
Vol 4 (89) ◽  
pp. 48254-48259 ◽  
Author(s):  
Xinkui Wang ◽  
Qinggang Liu ◽  
Zihui Xiao ◽  
Xiao Chen ◽  
Chuan Shi ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Aqueous Phase ◽  
Reduction Method ◽  
Bimetallic Nanoparticles ◽  
In Situ Synthesis ◽  
High Dispersion ◽  
Amine Functionalized

The homogeneous Au–Pd NPs have been prepared through a facile in situ reduction method. The optimal AuPd1.0/SiO2 catalyst could complete the conversion of chlorobenzene due to the high dispersion and modified electronic properties of Pd.

Reversible loss of core–shell structure for Ni–Au bimetallic nanoparticles during CO2 hydrogenation

2020 ◽  
Vol 3 (4) ◽  
pp. 411-417 ◽  
Author(s):  
Xiaoben Zhang ◽  
Shaobo Han ◽  
Beien Zhu ◽  
Guanghui Zhang ◽  
Xiaoyan Li ◽  
...  
Keyword(s):  
Shell Structure ◽  
Bimetallic Nanoparticles ◽  
Co2 Hydrogenation ◽  
Core Shell ◽  
Core Shell Structure ◽  
Reversible Loss

Aqueous phase synthesis and fluorescence properties of inverted core/shell ZnSe/CdSe nanocrystals

2010 ◽  
Vol 15 (4) ◽  
pp. 320-324
Author(s):  
Jing Zhou ◽  
Luwen Jiang ◽  
Wen Guo ◽  
Hai Jiang ◽  
Zhonghua Hao
Keyword(s):  
Aqueous Phase ◽  
Fluorescence Properties ◽  
Cdse Nanocrystals ◽  
Core Shell ◽  
Phase Synthesis

Controlling alloy to core–shell structure transformation of Au–Pd icosahedral nanoparticles

2021 ◽  
Author(s):  
Yuyu Chen ◽  
Xiaobing Zeng ◽  
Yawen Liu ◽  
Rongkai Ye ◽  
Qianwei Liang ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Shell Structure ◽  
Core Shell ◽  
Structure Transformation ◽  
One Step ◽  
Core Shell Structure

Structure transformation of Au–Pd icosahedral nanoparticles from alloy to core–shell was achieved in a one-step aqueous-phase strategy.

Aqueous phase synthesis of Au@Ag3AuX2(X = Se, Te) core/shell nanocrystals and their broad NIR photothermal conversion application

CrystEngComm ◽  
2016 ◽  
Vol 18 (29) ◽  
pp. 5418-5422 ◽  
Author(s):  
Tao Chen ◽  
Meng Xu ◽  
Muwei Ji ◽  
Lei Cheng ◽  
Jiajia Liu ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Core Shell ◽  
Phase Synthesis ◽  
Photothermal Conversion

Structural stability of alloyed and core–shell Cu–Pt bimetallic nanoparticles

2017 ◽  
Vol 31 (07) ◽  
pp. 1741012 ◽  
Author(s):  
Hongcheng Peng ◽  
Weihong Qi ◽  
Wenhai Ji ◽  
Siqi Li ◽  
Jieting He
Keyword(s):  
Phase Diagrams ◽  
Structural Stability ◽  
Surface Segregation ◽  
Bimetallic Nanoparticles ◽  
Pt Nanoparticles ◽  
Energy Model ◽  
Core Shell ◽  
Shape Effect ◽  
Composition Segregation ◽  
Co Reduction

Combining the bond-energy model and Debye theory, we generalized the Gibbs free energy model for Cu–Pt nanoparticles (NPs) by introducing a shape factor considering the shape effect. We studied the structural stability of the Cu–Pt NPs and plotted the corresponding composition-, shape- and size-dependent phase diagrams. It is shown that the Cu–Pt NPs can form alloyed structure in a large size range. But when the particle size continues to decrease, the NPs will form the core–shell structure due to surface segregation. Meanwhile, the composition segregation could make the atoms of less-content element to gather in the surface. The predictions from the present calculated phase diagrams are consistent with a series of experimental results in literatures. To further prove the efficiency of the phase diagrams, we synthesized the alloyed Cu–Pt NPs of 4–15 nm by a co-reduction method, which is in agreement with the predictions from the phase diagrams.

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