Preparation of cellulose fibres with antibacterial Ag-loading nano-SiO2

Abstract

The antibacterial cellulose fibres with acrylamide polymerization and Ag-loading SiO 2 nanoantibacterial materials were successfully prepared. The chemical structures and morphologies of antibacterial cellulose fibres were characterized by Fourier transformation infrared spectrum (FTIR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The results showed that acrylamide was adsorbed on the surface of the cellulose fibres and formed a layer with thickness of 50-100 nm. The nano-SiO 2 composite antibacterial materials were combined with cellulose fibres firmly by infiltrating into polyacrylamide layer about 100 nm. The antibacterial cellulose fibres with antibacterial layer owned excellent antibacterial effect.

Progress and Prospects of Emerging Potassium–Sulfur Batteries

“…In this respect, carbonaceous materials have attracted increasing attention for use as sulfur cathode materials. [ 41 ] There are several advantages of using carbon‐based materials as cathode materials for the K–S system: 1) The carbon matrix can confine active materials (sulfur and corresponding sulfur‐based species) and guarantee enough electrical contact; [ 42 ] 2) dissolved K 2 S x polysulfides can be absorbed within the pores and further decrease the free migration of polysulfide intermediates to the anode; [ 43 ] 3) volume fluctuations can be mitigated, ensuring the integrity of the sulfur cathode; [ 44 ] and 4) electrolyte permeation is facilitated, promoting K ion transportation. [ 14 ] The first article on the room‐temperature K–S system reported the use of ordered mesoporous carbon (CMK‐3)/sulfur and polyaniline (PANI)‐coated CMK‐3/sulfur composites as cathode materials, while the anode material was potassium metal.…”

Data-driven discovery of carbonyl organic electrode molecules: machine learning and experiment

“…4 The so molecular skeleton of OEMs is suitable for exible electronic devices in comparison with traditional inorganic electrode materials. [5][6][7] The theoretical capacity (TC, mA h g −1 ) of OEMs is designable by adjusting the number of redox blocks. For example, cyclohexanehexone (C 6 O 6 ) consisting of six redox blocks (carbonyls) without other supporting blocks served as a cathode material for LIBs with the highest capacity of 902 mA h g −1 among carbonyl-based compounds.…”

Recent Advances on the Development of Antibacterial Polysaccharide-Based Materials

“…Antibacterial cellulose-based materials are obtained primarily by the simple combination of cellulose (or cellulose derivatives) with distinct biocides (including metal and metal oxide nanoparticles and salts, Antibacterial Cellulose/Metal (Metal Oxide) Nanoparticle Composites In the last decade, the combination of different forms of cellulose, like plant fibers (Csóka et al 2012;Raghavendra et al 2013;Simonc et al 2008;Teli and Sheikh. 2012;Wang et al 2011Wang et al , 2013bZhu et al 2009), cotton fabrics Park et al 2012), filter paper (Imani et al 2011;Tang et al 2009; Tankhiwale and Bajpai 2009), microcrystalline cellulose (Dong et al 2014;Huang et al 2013;Jankauskaitė et al 2014;Li et al 2011Li et al , 2012a, bacterial cellulose (Barud et al 2011;Dobre and Stoica-Guzun 2013;Jung et al 2009;Liu et al 2012a;Maneerung et al 2008;Maria et al 2010;Sureshkumar et al 2010;Wu et al 2014b;Yang et al 2012aYang et al , b, 2013Zhang et al 2013), nanofibrillated cellulose (Díez et al 2011;Martins et al 2012;Xiong et al 2013), as well as cellulose derivatives (e.g., cellulose acetate (Hyuk Jang et al 2014;Perera et al 2014;Scheeren et al 2011;Son et al 2006), hydroxypropyl cellulose (Angelova et al 2012), and cellulose acetate phthalate (Necula et al 2010)), with silver nanoparticles (Ag NPs), following diverse methods, is definitely the most extensively studied strategy for the design of ant...…”