Synthesis of a new schiff base oxovanadium complex with melamine and 2‐hydroxynaphtaldehyde on modified magnetic nanoparticles as catalyst for allyl alcohols and olefins epoxidation

2019 ◽  
Vol 33 (5) ◽  
pp. e4896 ◽  
Author(s):  
Faezeh Farzaneh ◽  
Zeinab Asgharpour
Keyword(s):  
Schiff Base ◽  
Magnetic Nanoparticles ◽  
Oxovanadium Complex ◽  
Allyl Alcohols ◽  
Modified Magnetic Nanoparticles

scholarly journals Magnetic Biopolymeric Hydrogel Composite Material with Self-healing Attribute

2021 ◽  
Vol 11 (6) ◽  
pp. 14881-14888
Keyword(s):  
Schiff Base ◽  
Magnetic Nanoparticles ◽  
Xanthan Gum ◽  
Silica Surface ◽  
Weight Ratio ◽  
Self Healing ◽  
Ft Ir ◽  
Modified Magnetic Nanoparticles ◽  
Surface Modified ◽  
Ft Ir Spectroscopy

This work presents a polysaccharide-based magnetic self-healing hydrogel fabricated through the incorporation of surface modified magnetic nanoparticles, a silica-surface modified magnetic - Fe3O4@SiO2, (MNP), to a polymer composite synthesized from the oxidation of xanthan gum (XG) and it's crosslinking with chitosan (CS) to generate Schiff base linkages rendering self-healing character. Fourier transform infrared (FT-IR) spectroscopy analyses revealed the successful formation of Schiff base bonding in the CS-OXG and CS-OXG-MNP hydrogels. In incorporating surface-modified magnetic nanoparticles, the resulting CS-OXG-MNP hydrogel with a weight ratio of 1:1:0.2, respectively, exhibited a better self-healing hydrogel in terms of faster self-healing characteristics and stronger mechanical property.

Mo(vi) complex supported on Fe3O4 nanoparticles: magnetically separable nanocatalysts for selective oxidation of sulfides to sulfoxides

RSC Advances ◽  
2015 ◽  
Vol 5 (66) ◽  
pp. 53349-53356 ◽  
Author(s):  
Hasan Keypour ◽  
Masomeh Balali ◽  
Mohammad Mehdi Haghdoost ◽  
Mojtaba Bagherzadeh
Keyword(s):  
Schiff Base ◽  
Catalytic Activity ◽  
Magnetic Nanoparticles ◽  
Catalytic Oxidation ◽  
Fe3o4 Nanoparticles ◽  
Molybdenum Complex ◽  
Covalent Linkage ◽  
Oxidation Of Sulfides ◽  
Magnetically Separable ◽  
Modified Magnetic Nanoparticles

A molybdenum complex was immobilized on amino propyl and Schiff base modified magnetic nanoparticles by covalent linkage. In catalytic oxidation of sulfides, the catalysts showed similar catalytic activity but different stability and recyclability.

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