Attachment of gold nanoparticles on cellulose nanofibrils via click reactions and electrostatic interactions

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Jiaqi Guo, Ilari Filpponen, Pingping Su, Janne Laine, Orlando J. Rojas
Förläggare: SPRINGER
Publiceringsår: 2016
Tidskrift: Cellulose
Tidskriftsakronym: CELLULOSE
Volym: 23
Artikelns första sida, sidnummer: 3065
Artikelns sista sida, sidnummer: 3075
Antal sidor: 11
ISSN: 0969-0239


Abstrakt

Hybrid materials based on cellulose nanofibrils (CNF) and gold nanoparticles (AuNPs) are synthesized and novel routes to couple AuNPs on the CNF surface are introduced. Quaternary ammonium, azido, alkyne and amino functional groups were used for the attachment of metal particles on the corresponding functionalized CNF (EPTMAC-CNF, Azido-CNF, Propargyl-CNF, Amino-CNF, respectively). The CNF-based supports were characterized by Fourier transform infrared spectroscopy and the surface charge was assessed by zeta-potential measurements. The AuNPs were attached on the functionalized CNF surface via either electrostatic interactions or click reactions. The obtained CNF/AuNPs hybrid materials were characterized using transmission electron microscopy (TEM) and inductively coupled plasma optical emission spectrometry. The obtained Bio-inorganic hybrid materials are potentially suitable for surface-enhanced Raman scattering, chemosensing and catalytic applications.


Nyckelord

Bio-hybrid materials, Cationization, Cellulose nanofibrils, Click reactions, Gold nanoparticles

Senast uppdaterad 2020-22-01 vid 03:41