Fabrication of α-AlO(OH)·SiO2 with core-shell structures by heterogeneous nucleation-and-growth processing

2005 ◽  
Vol 241 (3-4) ◽  
pp. 412-415 ◽  
Author(s):  
Yue Feng Tang ◽  
Zhi Peng Huang ◽  
Liang Feng ◽  
Yan Feng Chen
Keyword(s):  
Heterogeneous Nucleation ◽  
Nucleation And Growth ◽  
Shell Structures ◽  
Core Shell

Hybrid Au-CdSe and Ag-CdSe Nanoflowers and Core-Shell Nanocrystals via One-Pot Heterogeneous Nucleation and Growth

Small ◽  
2011 ◽  
Vol 7 (23) ◽  
pp. 3299-3307 ◽  
Author(s):  
Khaled M. AbouZeid ◽  
Mona B. Mohamed ◽  
M. Samy El-Shall
Keyword(s):  
Heterogeneous Nucleation ◽  
Nucleation And Growth ◽  
Core Shell ◽  
One Pot

Synthesis and Characterization of Magnetic γ-Fe2O3/Al2O3 Core-Shell Nanocomposites

2011 ◽  
Vol 282-283 ◽  
pp. 312-316
Author(s):  
Hong Yan Ding ◽  
Yue Zhang ◽  
Guang Hong Zhou
Keyword(s):  
Heterogeneous Nucleation ◽  
Shell Structures ◽  
Synthesis And Characterization ◽  
Core Shell ◽  
Absorbing Materials

The γ-Fe2O3/Al2O3core-shell nanocomposites (MCSs) were successfully synthesized by using heterogeneous nucleation method. The results show that a core-shell structures exit in γ-Fe2O3/Al2O3MCSs and that the size of γ-Fe2O3/Al2O3MCSs is in nanoscale. The saturated magnetization and coercivity of γ-Fe2O3/Al2O3MCSs decrease compared with that of γ-Fe2O3nanoparticles. However, the infrared absorbing ability of γ-Fe2O3/Al2O3MCSs is obvious enhanced and it is expected to become a new series of absorbing materials applied in military field.

Highly Solar-Reflective Litchis-Like Core-Shell HGM/TiO2 Microspheres Synthesized by Controllable Heterogeneous Precipitation Method

NANO ◽  
2017 ◽  
Vol 12 (07) ◽  
pp. 1750080 ◽  
Author(s):  
Hu Jin ◽  
Dehua Xu ◽  
Jingling Li ◽  
Kelai Wang ◽  
Zhuoneng Bi ◽  
...  
Keyword(s):  
Heterogeneous Nucleation ◽  
Energy Efficient ◽  
Nucleation And Growth ◽  
Precipitation Method ◽  
Core Shell ◽  
Hollow Glass Microsphere ◽  
Structural Composites ◽  
Heterogeneous Precipitation ◽  
Solar Reflectance ◽  
Nucleation Sites

Hollow glass microsphere (HGM)/TiO2 core-shell structural composites have promising applications in the field of energy efficient solar-reflective paints. In this work, after pretreated with saturated Ca(OH)2 solutions, litchis-like TiO2 shells have been successfully synthesized on HGMs via a controllably heterogeneous precipitation method with Titanium (IV) sulfate (Ti(SO[Formula: see text] and urea as reaction precursors. It is emphasized that the use of urea as the precipitating agent is essential for the heterogeneous nucleation and growth of Ti(OH)4 on HGMs, while the Ca(OH)2 pretreatment provides the heterogeneous nucleation sites on HGMs which promotes the nucleation and growth of Ti(OH)4, and gives rise to large secondary Ti(OH)4 particles, leading to the formation of litchis-like TiO2 shells. The resulted core-shell structural HGM/TiO2 microspheres exhibited highest solar reflectance of [Formula: see text]83%.

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.

Template-free synthesis of ordered ZnO@ZnS core–shell arrays for high performance supercapacitors

2016 ◽  
Vol 45 (44) ◽  
pp. 17980-17986 ◽  
Author(s):  
Hailong Yan ◽  
Tong Li ◽  
Yang Lu ◽  
Jinbing Cheng ◽  
Tao Peng ◽  
...  
Keyword(s):  
High Performance ◽  
Shell Structures ◽  
Core Shell ◽  
Template Free

In this article, ordered ZnO@ZnS core–shell structures have been produced on a stainless mesh by a two-step approach without using a template.

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