In nature, a number of nanocomposites are formed through biomineralization-relevant processes under mild conditions. In the present study, a total "biologic" route to fabricate nanocomposite is reported. Non-pathogenic bacteria, Gluconacetobacter xylinum, was utilized as a versatile biofactory, which produced biopolymer bacterial cellulose (BC) and induced the …
In nature, a number of nanocomposites are formed through biomineralization-relevant processes under mild conditions. In the present study, a total "biologic" route to fabricate nanocomposite is reported. Non-pathogenic bacteria, Gluconacetobacter xylinum, was utilized as a versatile biofactory, which produced biopolymer bacterial cellulose (BC) and induced the …
The power law exponent of Ag releasing rate of the all tested nanocomposite samples is near to 0.45 with R 2 ≥0.836, which indicates that the Ag release mechanism is controlled by Fickian diffusion. Table 2 Release …
The time-kill kinetic analysis analyzes the ATP@PVP/Ag 0 nanocomposite''s bactericidal activity and is investigated against S. pyogenes and E. coli. By measuring the rate of bacterial survival after exposure to the nanocomposite solid is shown in Fig. 8 (a). The figure displays a percentage decrease of S. pyogenes and E. coli using the ...
As shown in Fig. 1 e, the presence of C, Zn, Al, and Zr was further identified, in agreement with the EDS results. The uniform distribution of Zn 2+ on the surface of the Zn-Al-Zr LDHs/GO was verified by the XPS peaks at 1021.72 eV (Zn2p 1/2) and 1044.81 eV (Zn2p 3/2).Additionally, the Al2p core level XPS spectrum showed a single peak at 73.88 eV …
Al foil-based SERS substrate offers a quick, effective detection and classification of three strains of UTI bacteria with the least bacterial concentration necessary for clinical diagnosis and was able to detect E. coli positive clinical samples by giving SERS fingerprint information directly from centrifuged urine samples within minutes.
Bacterial infection is a major threat to public health. Nanotechnology offers a solution by combining nanomaterials with antibacterial agents. The development of an effective nanocomposite against drug-resistant bacteria such as methicillin-resistant (MRSA) is
To examine the bacteria-killing property of Ag/ZnO/rGO nanocomposite, the bacterial suspensions (10 7 cfu/mL) were incubated in the absence or presence of Ag/ZnO/rGO nanocomposite (0.2 mg/ml) for 30 min in the dark and under the NIR irradiation (0.69 W/cm
Firstly, the electrode was coated with a reduced graphene oxide–poly(vinyl alcohol) and gold nanoparticles nanocomposite (AuNPs/rGO–PVA/GCE) to increase the electrode surface area and consequently raise the sensor sensitivity. Afterwards, to enhance the selectivity of the modified electrode, aptamers were attached to the surface of the ...
We herein propose silver nanoclusters/rose bengal nanocomposite (AgNCs/RB) as a novel photosensitizer with two primary antibacterial effects: (1) 1 O 2 generation by irradiated RB and (2) Ag + ion release from AgNCs. AgNCs/RB irradiated with white light-emitting diode (LED) for a short irradiation time of 1 min significantly decreased the ...
In this study, a HAp/NaP nanocomposite was prepared by adding a synthesized nano-hydroxyapatite to zeolite NaP gel in the hydrothermal condition and used for the removal of lead(II) and cadmium(II) ions from aqueous solution. HAp/zeolite nanocomposite was then characterized by Fourier transform infrared spectroscopy, X-ray diffraction and Rietveld …
3.3. Electrocatalytic activity of heme proteins immobilized on the Au–BC nanocomposite modified GCE. In order to investigate the bioactivity of immobilized heme proteins on Au–BC nanocomposite, the developed biosensors were used for the determination of H 2 O 2.HQ is often used as an electron mediator to investigate the bioactivity of heme …
Herein, facile synthesis of monodisperse silicon and carbon nanocomposite spheres (MSNSs) is achieved via a simple and scalable surface-protected magnesiothermic …
Nanocomposite with 40% NACP neutralized a lactic acid solution of pH 4 by rapidly increasing the pH to 5.69 in 10 min. In contrast, the commercial controls had pH staying at near 4. Using Streptoccocus mutans, an agar disk-diffusion test showed no inhibition zone for commercial controls. In contrast, the inhibition zone was (2.5 ± 0.7) mm for ...
The prepared phthalocyanine–graphene–bacterial–cellulose nanocomposite, PcS@GBC, was characterized by field emission scanning electron microscope (FESEM) and X-ray photoelectron spectroscopy (XPS). The catalytic activity of the PcS@GBC was with ...
This book discusses the roles of nanostructures and nanomaterials in the development of battery materials for state-of-the-art electrochemical energy storage systems, and provides detailed …
Owing to the shape-dependent catalytic activity of Fe3O4 nanoparticles, controlling their morphology is of great significance. In this work, we propose a simple, nontoxic, water-based strategy for the fabrication of magnetic nanoparticle/hydrogel nanocomposites in which highly crystalline Fe3O4 nanooctahedra can be fabricated in situ within a negatively charged hydrogel …
A Comparative Study of Cellulose Nanocomposite … 155 Fig. 1 Molecular structure of cellulose nd = degree of polymerization [2] are recycled for coverings, protects, optical films as well as ...
A series of bacterial cellulose-poly(2-hydroxyethyl methacrylate) nanocomposite films was prepared by in situ radical polymerization of 2-hydroxyethyl methacrylate ...
For the first time, we developed a novel nanocomposite of RGO decorated with α-Mn 2 O 3 nanorods (NRs) for inhibiting microbially influenced corrosion. RGO sheets with 2 nm thick were effectively synthesized by the modified Hummers technique and then a hydrothermal reduction procedure. The fabricated RGO/α-Mn 2 O 3 nanocomposite exhibited controlled …
The nanocomposite was prepared with help of AgNO3 and MesoSilver solutions with a PAMAM dendrimer template. Ag-dendrimer nanocomposites demonstrated good antibacterial activity against S. aureus when Cotton and Nylon mixed fabrics were exposed to these nanocomposites. All fabric specimens that were treated with nanocomposites displayed ...
In this article, the stable Li metal batteries boosted by nano-technology and nano-materials are comprehensively reviewed. Two emerging strategies, including nanostructured lithium metal frameworks and nano-artificial solid-electrolyte interphase (SEI) …
The biosensor was successfully applied to the determination of glucose in human blood samples and a sensitive and fast amperometric response to glucose was observed in the presence of electron mediator (HQ). An exploration of gold nanoparticles–bacterial cellulose nanofibers (Au-BC) nanocomposite as a platform for amperometric determination of glucose is presented. …
Nanocomposite hydrogel is helpful to provide a moist and ideal environment for wound healing. In this research study, a nanocomposite hydrogel was prepared based on schizophyllan (SPG) and amine-functionalized bacterial cellulose (amine-functionalized BC). ZnO-nanoparticles were loaded into amine-grafted BC/SPG hydrogel to improve its …
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