Homogeneous synthesis of Ag nanoparticles-doped water-soluble cellulose acetate for versatile applications

• Published in: International journal of biological macromolecules Vol. 92; pp. 167 - 173
• Main Authors: Cao, Jie, Sun, Xunwen, Zhang, Xinxing, Lu, Canhui
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01.11.2016
• Subjects: Anti-Bacterial Agents - pharmacology; Antibacterial activity; Catalysis; Cellulose - analogs & derivatives; Cellulose - chemistry; Escherichia coli - drug effects; Homogeneous synthesis; Metal Nanoparticles - chemistry; Metal Nanoparticles - ultrastructure; Microbial Sensitivity Tests; Nitrophenols; Silver - pharmacology; Silver nanoparticles; Solubility; Spectrometry, X-Ray Emission; Spectrophotometry, Ultraviolet; Spectroscopy, Fourier Transform Infrared; Staphylococcus aureus - drug effects; Water-soluble cellulose acetate; X-Ray Diffraction; Homogeneous synthesis; Antibacterial activity; Catalysis; Silver nanoparticles; Water-soluble cellulose acetate
• ISSN: 0141-8130; 1879-0003
• DOI: 10.1016/j.ijbiomac.2016.06.092

⿢Synthesis of Ag NPs using water-soluble CA as both reductant and stabilizer.⿢Partial acetylation of cellulose enhances activity of remaining hydroxyl groups.⿢Ag NPs@CA nanohybrids show excellent catalytic and antibacterial properties. We report a facile and efficient approach for synthesis of well-dispersed and stable silver nanoparticles (Ag NPs) using water-soluble cellulose acetate (CA) as both reductant and stabilizer. Partially substituted CA with highly active hydroxyl groups and excellent water-solubility is able to reduce silver ions in homogeneous aqueous medium effectively. The synthesized Ag NPs were characterized by UV⿿vis spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy and energy dispersive X-ray spectroscope analysis. The as-prepared Ag NPs were well-dispersed, showing a surface plasmon resonance peak at 426nm. The resulted Ag NPs@CA nanohybrids exhibit high catalytic activity for the reduction of 4-nitrophenol to 4-aminophenol in the presence of NaBH4. Meanwhile, the nanohybrids are also effective in inhibiting the growth of bacterial. This environmentally friendly method promotes the use of renewable natural resources to prepare a variety of inorganic-organic materials for catalysis, antibacterial, sensors and other applications.