scholarly journals Novel mesoporous Ag@SiO2 nanospheres as a heterogeneous catalyst with superior catalytic performance for hydrogenation of aromatic nitro compounds

RSC Advances ◽  
2021 ◽  
Vol 11 (60) ◽  
pp. 37708-37712
Author(s):  
Wenyan Li ◽  
Xinying Lin ◽  
Jing Long ◽  
Bo Zheng ◽  
Zhaorui Pan ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Shell Structure ◽  
Ag Nanoparticles ◽  
Catalytic Performance ◽  
Hydrogenation Reaction ◽  
Nitro Compounds ◽  
Core Shell ◽  
Aromatic Nitro Compounds ◽  
Core Shell Structure ◽  
Aromatic Nitro

Mesoporous core–shell structure Ag@SiO2 nanospheres are constructed to prevent Ag nanoparticles from aggregation during the hydrogenation reaction.

Preparation and Antibacterial Properties of the Core-Shell Structure SiO2@Ag Nanoparticles

2012 ◽  
Vol 8 (6) ◽  
pp. 861-867 ◽  
Author(s):  
Aixin Liu ◽  
Lei Sun ◽  
Yanbao Zhao ◽  
Zhijun Zhang
Keyword(s):  
Shell Structure ◽  
Ag Nanoparticles ◽  
Antibacterial Properties ◽  
Core Shell ◽  
The Core ◽  
Core Shell Structure

Spectroscopic evidence of a core–shell structure in the earlier formation stages of Au–Ag nanoparticles by pulsed laser ablation in water

2008 ◽  
Vol 457 (4-6) ◽  
pp. 386-390 ◽  
Author(s):  
Giuseppe Compagnini ◽  
Elena Messina ◽  
Orazio Puglisi ◽  
Rosario Sergio Cataliotti ◽  
Valeria Nicolosi
Keyword(s):  
Laser Ablation ◽  
Shell Structure ◽  
Ag Nanoparticles ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Core Shell ◽  
Spectroscopic Evidence ◽  
Core Shell Structure

Facile reduction of aromatic nitro compounds to aromatic amines catalysed by support-free nanoporous silver

RSC Advances ◽  
2015 ◽  
Vol 5 (38) ◽  
pp. 30062-30066 ◽  
Author(s):  
Zhiwen Li ◽  
Xiaohong Xu ◽  
Xiaojian Jiang ◽  
Yingchun Li ◽  
Zhixin Yu ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Aromatic Amines ◽  
Nitro Compounds ◽  
Aromatic Nitro Compounds ◽  
Aromatic Nitro

Reduction of aromatic nitro compounds to aromatic amines was realized in excellent yields by using nanoporous silver as a sustainable, heterogeneous catalyst.

Methanol Electro-Oxidation Using RuRh@Pt/C

2014 ◽  
Vol 953-954 ◽  
pp. 1297-1302
Author(s):  
Guang Ying Wang ◽  
Li Fang ◽  
Fei Fei Li ◽  
Surin Saipanya
Keyword(s):  
Shell Structure ◽  
Catalytic Performance ◽  
Core Shell ◽  
X Ray Diffraction ◽  
Peak Potential ◽  
Co Tolerance ◽  
The Core ◽  
Promising Application ◽  
Electro Oxidation ◽  
Core Shell Structure

A core-shell structure RuRh@Pt/C nanoparticles was prepared by using a two-step reduction method under ultrasonic promotion. The catalytic performance was tested in methanol electrooxidation. X-ray diffraction (XRD), scanning electron microscope (SEM) combined with cyclic voltammetry (CV) were used to characterize the obtained catalyst. The results showed that there was no alloy formed between the core RuRh and the shell Pt. The electrocatalytic activity of RuRh@Pt/C varied with the Ru/Rh ratio in the bimetallic core, among which the catalyst with the Ru/Rh ratio 1:2 and the Pt-shell thickness of 1.5 ([email protected]/C) showed the highest catalytic activity for methanol. With this catalyst, the current density of the oxidation peak for methanol electro-oxidation reached 2.3 times as that of Pt1.5/C while the corresponding peak potential shifted 60 mV negatively in comparing to that of Pt1.5/C. In addition, the catalyst with the core-shell structure of RuRh@Pt/C possessed much higher CO-tolerance for methanol electro-oxidation, indicating its promising application in low temperature fuel cell.

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