scholarly journals Surfactant-assisted ZnO processing as a versatile route to ZIF composites and hollow architectures with enhanced dye adsorption

2016 ◽  
Vol 4 (35) ◽  
pp. 13509-13518 ◽  
Author(s):  
Samir El-Hankari ◽  
Jordi Aguilera-Sigalat ◽  
Darren Bradshaw
Keyword(s):  
Rhodamine B ◽  
High Selectivity ◽  
Surface Passivation ◽  
Dye Adsorption ◽  
Shell Structures ◽  
Core Shell ◽  
Surfactant Assisted

Surfactant-assisted surface passivation of ZnO allows the preparation of ZnO@ZIF-8 core–shell composites with high selectivity for rhodamine B separation and full retention of template morphology. The oxide cores can be etched to access a range of hollow or yolk–shell structures.

Enhanced upconversion luminescence through core/shell structures and its application for detecting organic dyes in opaque fishes

2016 ◽  
Vol 15 (2) ◽  
pp. 260-265 ◽  
Author(s):  
Pan Hu ◽  
Xiaofeng Wu ◽  
Shigang Hu ◽  
Zenghui Chen ◽  
Huanyuan Yan ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Rhodamine B ◽  
Organic Dyes ◽  
Upconversion Luminescence ◽  
Shell Structures ◽  
Sodium Fluorescein ◽  
Core Shell

It confirms based on LRET that no Rhodamine B is absorbed by fishes after incubating in the aqueous solution of 1 μg ml−1 Rhodamine B for one day, contrary to sodium fluorescein.

scholarly journals Effective Mn-Doping in AgInS2/ZnS Core/Shell Nanocrystals for Dual Photoluminescent Peaks

Nanomaterials ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 263 ◽  
Author(s):  
Ryo Sakai ◽  
Hikaru Onishi ◽  
Satomi Ido ◽  
Seiichi Furumi
Keyword(s):  
Quantum Yield ◽  
Surface Passivation ◽  
Shell Structures ◽  
Core Shell ◽  
Mn Doping ◽  
Yield Value ◽  
The Absolute

We developed the effective Mn-doping procedure for AgInS2(AIS)/ZnS core/shell nanocrystals (NCs) to exhibit dual photoluminescence (PL) peaks. Although the AIS/ZnS core/shell NCs showed solely a single PL peak at ~530 nm, incorporation of a small amount of Mn as a dopant within the AIS/ZnS NCs resulted in the simultaneous emergence of dual PL peaks at ~500 nm (green PL) arising from AIS/ZnS NCs and ~600 nm (orange PL) from the Mn dopants. Furthermore, we succeeded in significantly increasing the absolute PL quantum yield value of dual emissive AIS/ZnS NCs incorporated with Mn dopants from 10% to 34% after surface passivation with another ZnS shell for the formation of core/shell/shell structures.

Synergistic and Competitive Adsorption of Methylene Blue and Rhodamine B on Core-shell Magnetic Manganese Dioxide Nanocomposites

2017 ◽  
Vol 13 (6) ◽  
Author(s):  
Linshan Wang ◽  
Cholhwan Kim ◽  
Xinyue Zhang ◽  
Carlos Fernandez ◽  
Ting Sun ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Manganese Dioxide ◽  
Rhodamine B ◽  
Competitive Adsorption ◽  
Core Shell

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.

nIn-situ facile synthesis of Superparamagnetic porous core-shell structure for Dye adsorption

2021 ◽  
Vol 1228 ◽  
pp. 129797
Author(s):  
Ahmad Khajeh Ebrahimi ◽  
Iran Sheikhshoaie ◽  
Saeideh Salimi ◽  
Hassan Arkaban
Keyword(s):  
Shell Structure ◽  
Dye Adsorption ◽  
Core Shell ◽  
Facile Synthesis ◽  
Porous Core ◽  
Core Shell Structure
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