In-situ generation and analysis of cellulose/silver nanoparticle composite filter paper with the assist of ultrasonic atomization

Abstract

The presence of active groups on the cellulose polymer chains make it a good carrier for the synthesis of silver nanoparticles. In this paper, pretreatment of cellulose filter paper with a low-concentration alkaline solution was followed by in-situ dispersion synthesis of silver nanoparticles on the cellulose filter paper by means of an ultrasonic atomizer at room temperature. The obtained cellulose/silver nanoparticle composites were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, UV–visible absorption spectroscopy, X-ray photoelectron spectroscopy and transmission electron microscopy. The results show that the silver element in cellulose basically exists in the form of metallic state, the size of silver nanoparticles is between 5 nm and 10 nm, and the distribution of silver nanoparticles is uniform without obvious agglomeration. The inductively coupled plasma mass spectrometry test results show that the content of silver nanoparticles loaded on cellulose is 17.6–28.9 mg/kg, which meets the requirements of most Nano-silver materials. Antibacterial test shows that cellulose/silver nanoparticle composites have good antibacterial activity. This method can quickly synthesize silver nanoparticles on cellulose at room temperature.