Controllable Preparation and Catalytic Performance of Magnetic Fe3O4@CeO2-Polysulfone Nanocomposites with Core–Shell Structure

2018 ◽  
Vol 57 (44) ◽  
pp. 15039-15045 ◽  
Author(s):  
Juan Wei ◽  
Hongbao Yao ◽  
Yujun Wang ◽  
Guangsheng Luo
Keyword(s):  
Shell Structure ◽  
Catalytic Performance ◽  
Core Shell ◽  
Core Shell Structure ◽  
Controllable Preparation ◽  
Magnetic Fe3o4

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.

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.

Modification of composite catalytic material CumVnOx@CeO2 core–shell nanorods with tungsten for NH3-SCR

Nanoscale ◽  
2020 ◽  
Vol 12 (30) ◽  
pp. 16366-16380 ◽  
Author(s):  
Xiaosheng Huang ◽  
Fang Dong ◽  
Guodong Zhang ◽  
Zhicheng Tang
Keyword(s):  
Shell Structure ◽  
Catalytic Performance ◽  
Core Shell ◽  
Nh3 Scr ◽  
Catalytic Material ◽  
Core Shell Structure

Tungsten anchoring Cu3(VO4)2@CeO2 nanorods with a core–shell structure exhibited satisfactory NH3-SCR catalytic performance.

Synthesis, characterization and catalytic performance of core-shell structure magnetic Fe3 O4 /P(GMA-EGDMA)-NH2 /HPG-COOH-Pd catalyst

2018 ◽  
Vol 33 (2) ◽  
pp. e4708 ◽  
Author(s):  
Mingliang Ma ◽  
Yuying Yang ◽  
Dili Liao ◽  
Ping Lyu ◽  
Jinwei Zhang ◽  
...  
Keyword(s):  
Shell Structure ◽  
Catalytic Performance ◽  
Core Shell ◽  
Pd Catalyst ◽  
Core Shell Structure
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