scholarly journals Synthesis of PdNi Bimetallic Nanoparticles and Their Composites in Reverse Micelles

2021 ◽  
Vol 57 (3) ◽  
pp. 516-524
Author(s):  
M. O. Sergeev ◽  
A. A. Revina ◽  
O. V. Suvorova
Keyword(s):  
Transition Metals ◽  
Fluorescence Spectroscopy ◽  
Plasmon Resonance ◽  
Reverse Micelles ◽  
Micellar Solution ◽  
Bimetallic Nanoparticles ◽  
Production Costs ◽  
Optical Absorbance ◽  
Reverse Micellar

Abstract In this work, results of the synthesis of bimetallic nanoparticles (NPs) based on transition metals Pd, Ni, and Fe reduced by quercetin in reverse-micellar solution (RMS) of Н2О/AOT/isooctane are presented. Using fluorescence spectroscopy, the formation of bimetallic structure of PdcoreNishell NP is shown and a synergetic enhancement of optical absorbance is revealed in the plasmon resonance spectra at the wavelength values intrinsic for monometallic NPs. Investigation of the adsorption of bimetallic NPs on the surface of γ-alumina proves the advantage of palladium-containing particles with Fecore/Pdshell obtained as a result of targeted reduction of palladium in RMS on the surface of large Fe NPs, which appears in the increase in the adsorption effectiveness of such a structure due to stronger binding with the carrier surface. This approach decreases the amount of expensive metal during production of palladium nanocomposites through a significant decrease in production costs.

Activity and Stability of Catalase in Nonionic Micellar and Reverse Micellar Systems

2004 ◽  
Vol 59 (11-12) ◽  
pp. 887-891 ◽  
Author(s):  
Lidia Gebicka ◽  
Monika Jurgas-Grudzinska
Keyword(s):  
Aqueous Solution ◽  
Reverse Micelles ◽  
Micellar Solution ◽  
Micellar Solutions ◽  
Micellar Systems ◽  
Brij 35 ◽  
Aqueous Micellar Solution ◽  
The Stability ◽  
Reverse Micellar Systems ◽  
Reverse Micellar

Catalase activity and stability in the presence of simple micelles of Brij 35 and entrapped in reverse micelles of Brij 30 have been studied. The enzyme retains full activity in aqueous micellar solution of Brij 35. Catalase exhibits “superactivity” in reverse micelles composed of 0.1 ᴍ Brij 30 in dodecane, n-heptane or isooctane, and significantly lowers the activity in decaline. The incorporation of catalase into Brij 30 reverse micelles enhances its stability at 50 °C. However, the stability of catalase incubated at 37 °C in micellar and reverse micellar solutions is lower than that in homogeneous aqueous solution.

β-Casein monomers as potential flavonoids nanocarriers: Thermodynamics and kinetics of β-casein-naringin binding by fluorescence spectroscopy and surface plasmon resonance

2020 ◽  
Vol 108 ◽  
pp. 104728
Author(s):  
Ana Flávia Coelho Pacheco ◽  
Natália Moreira Nunes ◽  
Hauster Maximiler Campos de Paula ◽  
Yara Luiza Coelho ◽  
Luis Henrique Mendes da Silva ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Fluorescence Spectroscopy ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Thermodynamics And Kinetics ◽  
Kinetics Of

Thermodynamic and kinetic study of epigallocatechin-3-gallate-bovine lactoferrin complex formation determined by surface plasmon resonance (SPR): A comparative study with fluorescence spectroscopy

2019 ◽  
Vol 95 ◽  
pp. 526-532 ◽  
Author(s):  
Jaqueline de Paula Rezende ◽  
Eliara Acipreste Hudson ◽  
Hauster Maximiler Campos de Paula ◽  
Yara Luiza Coelho ◽  
Luis Henrique Mendes da Silva ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Complex Formation ◽  
Fluorescence Spectroscopy ◽  
Comparative Study ◽  
Kinetic Study ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Bovine Lactoferrin
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