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...

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...

Controlled synthesis of Pd–NiO@SiO2 mesoporous core–shell nanoparticles and their enhanced catalytic performance for p-chloronitrobenzene hydrogenation with H2

2015 ◽  
Vol 5 (1) ◽  
pp. 405-414 ◽  
Author(s):  
Hongmei Liu ◽  
Kai Tao ◽  
Chunrong Xiong ◽  
Shenghu Zhou
Keyword(s):  
Catalytic Performance ◽  
Core Shell ◽  
Controlled Synthesis ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles

Pd–NiO@SiO2 nanocatalysts illustrated a superior catalytic performance for catalytic p-chloronitrobenzene hydrogenation to PdNi@SiO2 and Pd@SiO2 nanocatalysts.

scholarly journals Direct evidence for an interdiffused intermediate layer in bi-magnetic core–shell nanoparticles

Nanoscale ◽  
2014 ◽  
Vol 6 (20) ◽  
pp. 11911-11920 ◽  
Author(s):  
Amélie Juhin ◽  
Alberto López-Ortega ◽  
Marcin Sikora ◽  
Claire Carvallo ◽  
Marta Estrader ◽  
...  
Keyword(s):  
Intermediate Layer ◽  
Direct Evidence ◽  
Magnetic Core ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles ◽  
Insight Into

RIXS-MCD spectroscopy gives direct insight into the nature of the buried interface in nominally γ-Fe2O3–Mn3O4core–shell nanoparticles.

scholarly journals Seed-mediated growth of MOF-encapsulated Pd@Ag core–shell nanoparticles: toward advanced room temperature nanocatalysts

2016 ◽  
Vol 7 (1) ◽  
pp. 228-233 ◽  
Author(s):  
Liyu Chen ◽  
Binbin Huang ◽  
Xuan Qiu ◽  
Xi Wang ◽  
Rafael Luque ◽  
...  
Keyword(s):  
Ag Nanoparticles ◽  
Room Temperature ◽  
Catalytic Performance ◽  
Reducing Agent ◽  
Growth Strategy ◽  
Core Shell ◽  
Hydrogen Atoms ◽  
Shell Nanoparticles ◽  
Seed Mediated ◽  
Core Shell Nanoparticles

Core–shell Pd@Ag nanoparticles are formed within the pores of MOFs via a seed mediated growth strategy with activated hydrogen atoms as the reducing agent, leading to a family of bimetallic core–shell MOF nanomaterials with excelling catalytic performance in room temperature reactions.

Self-assembly of Au–Pt core–shell nanoparticles for effective enhancement of methanol electrooxidation

2013 ◽  
Vol 87 ◽  
pp. 432-437 ◽  
Author(s):  
Mei-Yun Duan ◽  
Ren Liang ◽  
Na Tian ◽  
Yong-Jun Li ◽  
Edward S. Yeung
Keyword(s):  
Self Assembly ◽  
Methanol Electrooxidation ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles

scholarly journals Pd@Zn core–shell nanoparticles of controllable shell thickness for catalytic methanol production

2016 ◽  
Vol 6 (21) ◽  
pp. 7698-7702 ◽  
Author(s):  
Fenglin Liao ◽  
Xin-Ping Wu ◽  
Jianwei Zheng ◽  
Meng-Jung Li ◽  
Ziyan Zeng ◽  
...  
Keyword(s):  
Shell Thickness ◽  
Synthesis Method ◽  
Catalytic Performance ◽  
Shell Structures ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Methanol Production ◽  
Novel Synthesis ◽  
Core Shell Nanoparticles

A novel synthesis method of nano-Pd@Zn core–shell structures with controllable shell thickness showing remarkable catalytic performance in CO2hydrogenation.

An Insight into the Coating Behavior of Bimetallic Silver and Gold Core-Shell Nanoparticles

Plasmonics ◽  
2020 ◽  
Vol 15 (6) ◽  
pp. 1599-1612 ◽  
Author(s):  
Muhammad Mohsin ◽  
Muhammad Jawad ◽  
Muhammad Arfat Yameen ◽  
Amir Waseem ◽  
Sajid Hussain Shah ◽  
...  
Keyword(s):  
Core Shell ◽  
Shell Nanoparticles ◽  
Gold Core ◽  
Core Shell Nanoparticles ◽  
Insight Into

scholarly journals Synthesis of Au@Pt Core–Shell Nanoparticles as Efficient Electrocatalyst for Methanol Electro-Oxidation

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1644
Author(s):  
Higareda ◽  
Kumar-Krishnan ◽  
García-Ruiz ◽  
Maya-Cornejo ◽  
Lopez-Miranda ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Electrocatalytic Activity ◽  
Heterogeneous Catalysts ◽  
Precursor Solution ◽  
Catalytic Performance ◽  
Atomic Ratio ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Synthesis Strategy ◽  
Electro Oxidation

Bimetallic Au@Pt nanoparticles (NPs) with Pt monolayer shell are of much interest for applications in heterogeneous catalysts because of enhanced catalytic activity and very low Pt-utilization. However, precisely controlled synthesis with uniform Pt-monolayers and stability on the AuNPs seeds remain elusive. Herein, we report the controlled deposition of Pt-monolayer onto uniform AuNPs seeds to obtain Au@Pt core–shell NPs and their Pt-coverage dependent electrocatalytic activity for methanol electro-oxidation. The atomic ratio between Au/Pt was effectively tuned by varying the precursor solution ratio in the reaction solution. The morphology and atomic structure of the Au@Pt NPs were analyzed by high-resolution scanning transmission electron microcopy (HR-STEM) and X-ray diffraction (XRD) techniques. The results demonstrated that the Au@Pt core–shell NPs with Pt-shell thickness (atomic ratio 1:2) exhibit higher electrocatalytic activity for methanol electro-oxidation reaction, whereas higher and lower Pt ratios showed less overall catalytic performance. Such higher catalytic performance of Au@Pt NPs (1:2) can be attributed to the weakened CO binding on the Pt/monolayers surface. Our present synthesis strategy and optimization of the catalytic activity of Au@Pt core–shell NPs catalysts provide promising approach to rationally design highly active catalysts with less Pt-usage for high performance electrocatalysts for applications in fuel cells.

Sign in / Sign up

Export Citation Format

Share Document