Multicomponent (Ce, Cu, Ni) oxides with cage and core–shell structures: tunable fabrication and enhanced CO oxidation activity

Nanoscale ◽  
2016 ◽  
Vol 8 (18) ◽  
pp. 9521-9526 ◽  
Author(s):  
Wei Liu ◽  
Ke Tang ◽  
Ming Lin ◽  
Lay Ting Ong June ◽  
Shi-Qiang Bai ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Shell Structures ◽  
Core Shell ◽  
Oxidation Activity

Fabrication of CeO2@MnO2 Core–Shell Nanospheres and Their Application in CO Oxidation

NANO ◽  
2017 ◽  
Vol 12 (03) ◽  
pp. 1750039 ◽  
Author(s):  
Ling Liu ◽  
Jingjing Shi ◽  
Hongxia Cao ◽  
Ruiyu Wang
Keyword(s):  
Co Oxidation ◽  
Rational Design ◽  
Synergistic Effects ◽  
Phase Interface ◽  
Catalytic Performance ◽  
Core Shell ◽  
High Catalytic Activity ◽  
Two Phase ◽  
Oxidation Activity ◽  
Shell Nanostructures

Rational design and fabrication of heterogeneous core–shell nanostructures is of great significance because their two-phase interface could render hybrid junctions with rich redox reactions, which are beneficial for improving catalytic performance. Herein, hierarchical CeO2 yolk-shell nanospheres@MnO2 nanosheets core–shell nanostructures were fabricated by a multistep wet chemical synthetic strategy. The resulting CeO2@MnO2 core–shell nanospheres exhibited high catalytic activity toward CO oxidation in comparison with pure CeO2 and MnO2 structures and their physical and chemical mixture. The enhanced catalytic performance should be attributed to the formation of core–shell structure and the possible synergistic effects between the two components of MnO2 and CeO2, which facilitates materials with promoted redox properties and enhanced oxidation activity. In addition, this synthetic method is expected to extend to fabricate other multi-composite core–shell structures for a broad range of technical applications.

Enhanced CO Oxidation Activity of Ni@Ag Core–Shell Nanoparticles

2014 ◽  
Vol 43 (6) ◽  
pp. 910-912 ◽  
Author(s):  
Yuji Mahara ◽  
Hiroyuki Ishikawa ◽  
Junya Ohyama ◽  
Kyoichi Sawabe ◽  
Yuta Yamamoto ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Oxidation Activity ◽  
Core Shell Nanoparticles

scholarly journals Application of Ni-Oxide@TiO2 Core-Shell Structures to Photocatalytic Mixed Dye Degradation, CO Oxidation, and Supercapacitors

Materials ◽  
2016 ◽  
Vol 9 (12) ◽  
pp. 1024 ◽  
Author(s):  
Seungwon Lee ◽  
Jisuk Lee ◽  
Kyusuk Nam ◽  
Weon Shin ◽  
Youngku Sohn
Keyword(s):  
Co Oxidation ◽  
Dye Degradation ◽  
Shell Structures ◽  
Core Shell ◽  
Ni Oxide

Designing active mats based on cellulose acetate/polycaprolactone core/shell structures with different release kinetics

2021 ◽  
Vol 261 ◽  
pp. 117849 ◽  
Author(s):  
Adrián Rojas ◽  
Eliezer Velásquez ◽  
Constanza Piña ◽  
María José Galotto ◽  
Carol López de Dicastillo
Keyword(s):  
Cellulose Acetate ◽  
Release Kinetics ◽  
Shell Structures ◽  
Core Shell

scholarly journals A SERS Study of Charge Transfer Process in Au Nanorod–MBA@Cu2O Assemblies: Effect of Length to Diameter Ratio of Au Nanorods

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 867
Author(s):  
Lin Guo ◽  
Zhu Mao ◽  
Sila Jin ◽  
Lin Zhu ◽  
Junqi Zhao ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Shell Structure ◽  
Shell Structures ◽  
Core Shell ◽  
Absorption Bands ◽  
Au Nanorods ◽  
The Core ◽  
Band Position ◽  
Surface Enhanced Raman ◽  
Core Shell Structure

Surface-enhanced Raman scattering (SERS) is a powerful tool in charge transfer (CT) process research. By analyzing the relative intensity of the characteristic bands in the bridging molecules, one can obtain detailed information about the CT between two materials. Herein, we synthesized a series of Au nanorods (NRs) with different length-to-diameter ratios (L/Ds) and used these Au NRs to prepare a series of core–shell structures with the same Cu2O thicknesses to form Au NR–4-mercaptobenzoic acid (MBA)@Cu2O core–shell structures. Surface plasmon resonance (SPR) absorption bands were adjusted by tuning the L/Ds of Au NR cores in these assemblies. SERS spectra of the core-shell structure were obtained under 633 and 785 nm laser excitations, and on the basis of the differences in the relative band strengths of these SERS spectra detected with the as-synthesized assemblies, we calculated the CT degree of the core–shell structure. We explored whether the Cu2O conduction band and valence band position and the SPR absorption band position together affect the CT process in the core–shell structure. In this work, we found that the specific surface area of the Au NRs could influence the CT process in Au NR–MBA@Cu2O core–shell structures, which has rarely been discussed before.

Controlled Synthesis of Sintering-Resistant Pd@CeO2 Core–Shell Nanotube Catalysts for CO Oxidation

2019 ◽  
Vol 58 (48) ◽  
pp. 21972-21982
Author(s):  
Jingrui Ye ◽  
Dang-guo Cheng ◽  
Fengqiu Chen ◽  
Xiaoli Zhan
Keyword(s):  
Co Oxidation ◽  
Core Shell ◽  
Controlled Synthesis
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