Surface activation of cotton fiber by seeding silver nanoparticles and in situ synthesizing ZnO nanoparticles

Abstract

The paper describes the study of photocatalytic oxidation and antibacterial properties of cotton fabric treated with zinc oxide/silver (ZnO/Ag) nanocomposites. The ZnO nanoparticles were synthesized by an in situ approach on the surface of activated cotton fibers with seeded Ag nanoparticles. The effect of Ag nanoparticles seeding and synthesis temperature on the morphological, thermal, photocatalytic and antibacterial properties of ZnO/Ag nanocomposites treated cotton fibers were characterized using scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffractometer, thermo gravimetric analysis, Attenuated Total Reflection-Fourier Transform Infrared spectrometer. Synthesizing ZnO nanoparticles on the surface of un-activated cotton fibers lead to the formation of agglomerated nanoparticles while the Ag nanoparticles seeded cotton fibers prevented forming the same. The results indicated the presence of ZnO/Ag nanocomposites on the coated cotton fabrics, and all loaded samples presented an inhibition zone against S. aureus and E. coli bacteria.

Synergistic Enhancement in Antibacterial Activity of Core/Shell/Shell SiO2/ZnO/Ag3PO4 Nanoparticles

“…As shown in Figure a, visible‐light irradiation (•) does not show antibacterial activity to E. coli in the absence of antimicrobial nanoparticles. ZnO shows weak antibacterial property,, and 25% antibacterial efficiency is observed for SiO 2 /ZnO both in dark and visible‐light irradiation, attributing to its weak response for visible‐light (Figure S6). This phenomenon is also in accord with its lower photocatalytic MB degradation ability under visible‐light (Figure a).…”

Band gap-engineered ZnO and Ag/ZnO by ball-milling method and their photocatalytic and Fenton-like photocatalytic activities

“…Ansari et al promoted oxygen vacancies in pure ZnO using an electrochemically active biofilm and observed an enhanced visible-light photocatalytic activity, attributed the increased vacancies [21]. AgZnO composite materials have been prepared by a range of methods [2][3][4][5][6][7][8][9][10], which include flame spray pyrolysis [33], electrochemical biogenic synthesis [14], photoreduction, and chemical reduction methods [44], Liang et al employed a hydrothermal method (using Zn nitrate and urea in water) to synthesize porous 3D flower-like Ag/ZnO heterostructures, deposited Ag using a photoreduction method, and observed an enhanced photodegradation rate for rhodamine (RhB) under UV light [27]. When Ag was deposited on the ZnO, the photoreduction medium was found to be very important.…”

“…To enhance the performances of bare ZnO, hybridization with metals (such as Ag) has extensively been employed [2][3][4][5][6][7][8][9][10].…”

Smart Textiles with Janus Wetting and Wicking Properties Fabricated by Graphene Oxide Coatings

“…The diffraction patterns by XRD of the pristine cotton, GO, and rGO deposited cotton fabric surfaces are displayed in Figure 3d, the diffraction spectra of cotton, GO‐cotton, and rGO‐cotton have typical diffraction peaks of cotton pattern, which exhibit four characteristic peaks at 2θ value of 15° (101), 16.6° (), 22.9° (002), and 34.7° (040), corresponding to monoclinic cellulose‐Iβ (C 6 H 10 O 5 ) n . [ 38 ] Comparison of the three curves shown in Figure 3d shows no characteristic peak of GO and rGO from the diffraction measurements. It is thus difficult to find the characteristic peak of GO and rGO in the pattern of the modified cotton fabric samples, which are at the 2θ values of 10 and 22°, respectively.…”