Size-selective preparation of gold nanoparticles stabilized on chitosan using the matrix-transfer method

This paper describes the size-selective preparation of gold nanoparticles stabilized on chitosan. The exchange of the matrix from the size-selectively prepared Au:PVPs(K-15) to chitosan (chit) proceeded by the mixing of Au:PVPs(K-15) and chitosan in an immiscible two-phasic solvent system to produce...

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Bibliographic Details
Published in:Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology 2023-03, Vol.25 (3), p.50, Article 50
Main Authors: Assan, Nazgul, Uetake, Yuta, Sakurai, Hidehiro
Format: Article
Language:English
Subjects:
Acids
Aerobic conditions
Aqueous solutions
Catalysis
Catalysts
Catalytic activity
Cellulose
Characterization and Evaluation of Materials
Chemistry and Materials Science
Chitosan
Gold
Inorganic Chemistry
Lasers
Materials Science
Molecular weight
Nanoparticles
Nanotechnology
Optical Devices
Optics
Particle size
Photonics
Physical Chemistry
Polymers
Research Paper
Selectivity
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Summary:This paper describes the size-selective preparation of gold nanoparticles stabilized on chitosan. The exchange of the matrix from the size-selectively prepared Au:PVPs(K-15) to chitosan (chit) proceeded by the mixing of Au:PVPs(K-15) and chitosan in an immiscible two-phasic solvent system to produce Au:chits, where 2-PrOH acts as a mediator. The size dependency of the catalytic activity of the thus-prepared Au:chits is investigated using a homocoupling reaction of phenylboronic acid under aerobic conditions to find that 2.3 nm-sized Au:chit exhibited the best catalytic activity, but the smaller-sized (1.4 nm) catalyst is better for the product selectivity.
ISSN:1388-0764
1572-896X
DOI:10.1007/s11051-023-05700-x