Ultrasonic assisted synthesis of nanocrystalline cellulose as support and reducing agent for Ag nanoparticles: green synthesis and novel effective nanocatalyst for degradation of organic dyes

Abstract

In this study, nanocrystalline cellulose (NCC) prepared from microcrystalline cellulose using high‐intensity ultrasonication as mechanical method without any chemical treatment. The obtained NCC with around 30–50 nm diameters, utilized as support, reducing and stabilizing agent for in‐situ green and eco‐friendly synthesis of silver nanoparticles (Ag NPs). The catalytic activity of composite was examined for degradation of environmental pollutants. The structure of as‐synthesized composite (Ag@NCC) was characterized by ultraviolet–visible spectroscopy (UV–vis), field emission scanning electron microscopy (FE‐SEM); Transmission electron microscopy (TEM); Energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FT‐IR), X‐ray diffraction (XRD) and thermogravimetric analysis (TGA). The results of the catalytic reaction experiments showed that spherically shaped silver nanoparticles of around 20 nm distributed on the surface of nanocellulose demonstrated high catalytic efficiency towards the removal of methyl orange (MO) and 4‐nitrophenol (4‐NP).

Efficient Cellulose/Nano‐silver Composite Sheet Derived from Pineapple Leaves for Hydrogen Sulfide Detection

“…Silver nitrate is a white, colorless, and odorless crystal with oxidizing properties that enable it to synthesize AgNPs, with MCC as a reducing agent. [17] The process of capturing H 2 S gas reacts with the AgNPs on the microcrystalline cellulose, generating silver sulfide (Ag 2 S) and hydrogen (H 2 ), as shown in Equation 1. [18] 2 AgðsÞ þ H 2 SðgÞ !…”

Use of Nanocellulose to Produce Water-Based Conductive Inks with Ag NPs for Printed Electronics

“…Although Cu is a more sustainable alternative, Ag is more resistant to oxidation. There are several examples in the literature of conductive composites and inks containing NC and Ag, and we have summarized the most relevant ones in Table 1 [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ]. In [ 10 ], stable silver nanoparticles (Ag NPs) were synthesized using dialdehyde cellulose nanocrystal (DACNC) as both a reducing and stabilizing agent to be used as an antibacterial additive in paper-based food packaging.…”

“…In [ 10 ], stable silver nanoparticles (Ag NPs) were synthesized using dialdehyde cellulose nanocrystal (DACNC) as both a reducing and stabilizing agent to be used as an antibacterial additive in paper-based food packaging. Ag NPs/CNC composites were also prepared in [ 11 ] by heating AgNO 3 in the presence of CNC to be used as a nanocatalyst for degradation of organic dyes. References [ 12 , 13 , 14 ] use TEMPO-CNC to synthesize the composites, allowing to produce conductive suspensions at a very low silver content compared to classical silver ink.…”

Single-Step Synthesis of Silver Nanoparticles Supported on Cellulose Nanofibers Using a High-Pressure Wet-Type Jet Mill and Their Catalytic Activities

“…For example, silver NPs (AgNPs) have been prepared via a few different routes, such as chemical and photochemical reduction, 69) laser ablation, 10) processes involving emulsion, 11) and ultrasonic irradiation. 12,13) Surfactants such as cetyltrimethylammonium bromide (CTAB) and polyvinylpyrrolidone (PVP) must be used in these methods to stabilize the NPs state, suppress grain growth, and prevent aggregation. 14) In other words, the AgNPs lose their activity without those agents because of the smaller surface area due to the grain growth.…”