Kinetic analysis of the reduction of 4-nitrophenol catalyzed by Au/Pd nanoalloys immobilized in spherical polyelectrolyte brushes

2015 ◽  
Vol 17 (42) ◽  
pp. 28137-28143 ◽  
Author(s):  
Sasa Gu ◽  
Yan Lu ◽  
Julian Kaiser ◽  
Martin Albrecht ◽  
Matthias Ballauff
Keyword(s):  
Catalytic Activity ◽  
Kinetic Analysis ◽  
Molar Ratio ◽  
Carrier System ◽  
Polyelectrolyte Brushes ◽  
System P ◽  
Spherical Polyelectrolyte Brushes

We present a detailed study of the catalytic activity of Au/Pd nanoalloys with Au : Pd molar ratio 75 : 25 synthesized using spherical polyelectrolyte brushes (SPB) as carrier system.

High Catalytic Activity of Platinum Nanoparticles Immobilized on Spherical Polyelectrolyte Brushes

Langmuir ◽  
2005 ◽  
Vol 21 (26) ◽  
pp. 12229-12234 ◽  
Author(s):  
Yu Mei ◽  
Geeta Sharma ◽  
Yan Lu ◽  
Matthias Ballauff ◽  
Markus Drechsler ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Platinum Nanoparticles ◽  
High Catalytic Activity ◽  
Polyelectrolyte Brushes ◽  
Spherical Polyelectrolyte Brushes

Cooperative catalytic activity of cyclodextrin and Ag nanoparticles immobilized on spherical polyelectrolyte brushes

AIChE Journal ◽  
2014 ◽  
Vol 60 (6) ◽  
pp. 1977-1982 ◽  
Author(s):  
Jianjia Liu ◽  
Jie Wang ◽  
Zhongming Zhu ◽  
Li Li ◽  
Xuhong Guo ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Ag Nanoparticles ◽  
Polyelectrolyte Brushes ◽  
Spherical Polyelectrolyte Brushes

Metathesis Polymerization of Phenylacetylene by Tungsten Aryloxo Complexes

1995 ◽  
Vol 60 (3) ◽  
pp. 489-497 ◽  
Author(s):  
Hynek Balcar ◽  
Jan Sedláček ◽  
Marta Pacovská ◽  
Vratislav Blechta
Keyword(s):  
Molecular Weight ◽  
Catalytic Activity ◽  
Induction Period ◽  
Average Molecular Weight ◽  
Molar Fraction ◽  
Molar Ratio ◽  
Weight Average Molecular Weight ◽  
Polymer Yield ◽  
Positive Effect ◽  
Ligand Addition

Catalytic activity of the tungsten aryloxo complexes WCl5(OAr) and WOCl3(OAr), where Ar = 4-t-C4H9C6H4, 2,6-(t-C4H9)2C6H3, 2,6-Cl2C6H3, 2,4,6-Cl3C6H2, and 2,4,6-Br3C6H2 in polymerization of phenylacetylene (20 °C, monomer to catalyst molar ratio = 1 000) was studied. The activity of WCl5(OAr) as unicomponent catalysts increases with increasing electron withdrawing character of the -OAr ligand. Addition of two equivalents of organotin cocatalysts (Me4Sn, Bu4Sn, Ph4Sn, Bu3SnH) to WCl5(O-C6H2Cl3-2,4 ,6) has only slight positive effect (slightly higher polymer yield and/or molecular weight of poly(phenylacetylene)s was achieved). However, in the case of WOCl3(O-C6H3Cl2-2, 6) catalyst, it enhances the activity considerably by eliminating the induction period. Poly(phenylacetylene)s prepared with the catalysts studied have weight-average molecular weight ranging from 100 000 to 200 000. They are trans-prevailing and have relatively low molar fraction of monomer units comprised in cyclohexadiene sequences (about 6%).

Improving the genistein oral bioavailability via its formulation into the metal–organic framework MIL-100(Fe)

2021 ◽  
Vol 9 (9) ◽  
pp. 2233-2239
Author(s):  
Adrià Botet-Carreras ◽  
Cristina Tamames-Tabar ◽  
Fabrice Salles ◽  
Sara Rojas ◽  
Edurne Imbuluzqueta ◽  
...  
Keyword(s):  
Oral Bioavailability ◽  
Metal Organic Framework ◽  
Drug Carrier ◽  
Aqueous Solubility ◽  
Carrier System ◽  
System P ◽  
Metal Organic ◽  
Drug Carrier System ◽  
Organic Framework

Despite the interesting chemopreventive, antioxidant and antiangiogenic effects of the natural bioflavonoid genistein (GEN), its low aqueous solubility and bioavailability make it necessary to administer it using a suitable drug carrier system.

Enrichment and distribution of counterions in spherical polyelectrolyte brushes probed by SAXS

2019 ◽  
Vol 57 (12) ◽  
pp. 738-747 ◽  
Author(s):  
Zhishuang Ye ◽  
Li Li ◽  
Fang Zhao ◽  
Yuchuan Tian ◽  
Yunwei Wang ◽  
...  
Keyword(s):  
Polyelectrolyte Brushes ◽  
Spherical Polyelectrolyte Brushes

Immobilized CdS quantum dots in spherical polyelectrolyte brushes: fabrication, characterization and optical properties

2015 ◽  
Vol 3 (15) ◽  
pp. 3745-3751 ◽  
Author(s):  
Yu Cang ◽  
Rui Zhang ◽  
Guixin Shi ◽  
Jianchao Zhang ◽  
Lixiao Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Cds Nanoparticles ◽  
Basic Solution ◽  
Cds Quantum Dots ◽  
Polyelectrolyte Brushes ◽  
Photochemical Stability ◽  
Spherical Polyelectrolyte Brushes

The SPB@CdS nanoparticles exhibit controllable and reversible photoluminescence with pH as a trigger and strong photochemical stability in basic solution.

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