NDLI: Cellulose/silver nanoparticles composite microspheres: eco-friendly synthesis and catalytic application

Content Provider	Springer Nature Link
Author	Wu, Junjie Zhao, Ning Zhang, Xiaoli Xu, Jian
Copyright Year	2012
Abstract	Cellulose/silver nanoparticles (Ag NPs) composites were prepared and their catalytic performance was evaluated. Porous cellulose microspheres, fabricated from NaOH/thiourea aqueous solution by a sol–gel transition processing, were served as supports for Ag NPs synthesis by an eco-friendly hydrothermal method. The regenerated cellulose microspheres were designed as reducing reagent for hydrothermal reduction and also micro-reactors for controlling growth of Ag NPs. The structure and properties of obtained composite microspheres were characterized by Optical microscopy, UV–visible spectroscopy, WXRD, SEM, TEM and TG. The results indicated that Ag NPs were integrated successfully and dispersed uniformly in the cellulose matrix. Their size (8.3–18.6 nm), size distribution (3.4–7.7 nm), and content (1.1–4.9 wt%) were tunable by tailoring of the initial concentration of AgNO3. Moreover, the shape, integrity and thermal stability were firmly preserved for the obtained composite microspheres. The catalytic performance of the as-prepared cellulose/Ag composite microspheres was examined through a model reaction of 4-nitrophenol reduction in the presence of NaBH4. The composites microspheres exhibited good catalytic activity, which is much high than that of hydrogel/Ag NPs composites and comparable with polymer core–shell particles loading Ag NPs.
Starting Page	1239
Ending Page	1249
Page Count	11
File Format	PDF
ISSN	09690239
Journal	Cellulose
Volume Number	19
Issue Number	4
e-ISSN	1572882X
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-06-07
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cellulose Ag nanoparticles Hydrothermal method Catalysis Organic Chemistry Polymer Sciences Physical Chemistry Bioorganic Chemistry
Content Type	Text
Resource Type	Article
Subject	Polymers and Plastics

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