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•AgGO with enhanced absorption in the visible spectrum through a single-step surfactant-free facile method was prepared.•WO3-x/AgrGO composite with better photocatalytic activity was ...prepared by doping WO3-x by AgGO via a hydrothermal process.•Better carrier separation and reduced impedance leading to RhB degradation and bacterial inactivation.•It exhibits versatilities for photocatalytic activities in visible regions.•Stability tests suggest its excellent reusability.
Suppressing charge recombination in semiconductors via triggering interfacial polarization and synergism provides an effective way to redeem multifunctionality and achieve environmental sustainability. Herein, we anchor a single-step facile synthesis of AgGO, providing bandgap control through varying oxidation time and subsequent simultaneous incorporation of Ag and rGO via the in situ hydrothermal method in WO3-x. The resulting WO3-x/AgrGO composite demonstrated a broadening of optical absorption and excellent suppression of carrier recombination, thereby improving the catalytic properties. The synergism and excellent conductivity of AgrGO enhance the interfacial polarization to store the carriers for longer times and help carriers carry most of their energy to the catalyst’s surface. When WO3-x/AgrGO was tested against RhB under visible light irradiation, its degradation constant reached 0.034/min, 7.4 times faster than pure WO3-x. It has left no viable bacteria during the photoinactivation of gram-negative E. coli bacteria, and even its inactivation rate is 1.07 times faster than AgGO. So, this study provides a direct method of metal-GO composite synthesis and subsequent introduction into WO3-x to broaden the versatility of environmental semiconductors.
Different concentrations of zirconium with a fixed quantity (4 wt%) of chitosan (CS) doped nickel cobaltite (NiCo2O4) nanorods were synthesized using a co-precipitation approach. This cutting-edge ...research explores the cooperative effect of Zr-doped CS-NiCo2O4 to degrade the Eriochrome black T (EBT) and investigates potent antibacterial activity against Staphylococcus aureus (S. aureus). Advanced characterization techniques were conducted to analyze structural textures, morphological analysis, and optical characteristics of synthesized materials. XRD pattern unveiled the spinal cubic structure of NiCo2O4, incorporating Zr and CS peak shifted to a lower 2θ value. UV–Vis spectroscopy revealed the absorption range increased with CS and the same trend was observed upon Zr, showing a decrease in bandgap energy (Eg) from 2.55 to 2.4 eV. The optimal photocatalytic efficacy of doped NiCo2O4 within the basic medium was around 96.26 %, and bactericidal efficacy was examined against S. aureus, revealing a remarkable inhibition zone (5.95 mm).
•To synthesis the cerium oxide nanoparticles using different sources.•Biomedical applications of cerium oxide nanoparticles.•Applications of cerium oxide nanoparticles in toxicity studies.
A cerium ...oxide nanoparticles (nanoceria) has a wide range of applications in different fields, especially biomedical division. As a matter of concern, it has a major impact on the human health and environment. The aim of this review is to address the different ways of synthesis of nanoceria using chemical and green synthesis methods and characterization and the applications of nanoceria for antioxidant, anticancer, antibacterial activities and toxicological studies including the most recent studies carried out in vivo and in vitro to study the problems. We have exclusively discussed on the toxicology of nanoceria exposed to the general public along with recent advances in the studies of antimicrobial, toxicity and anti-oxidant activity.
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•The carbon/cerium oxide composites were prepared with the assistance of the glucose-based surfactant and impregnated to Fabrics.•The resultant CeO2–C composites exhibited excellent ...antibacterial activity.•The nanocomposites demonstrate efficient sunlight-driven photocatalytic activity.•The nanocomposites results in a synergistic effect, enhancing both antibacterial and photocatalytic performances.•The developed textiles hold promise for various healthcare applications.
This work inspects the antibacterial activity and sunlight-driven photocatalytic activity effect of nanocomposites of CeO2 and carbon as a surface coating onto the fabric with self-cleaning properties. The nanocomposites of CeO2 and carbon were confirmed by XRD, FTIR, Laser Raman and TEM, revealing the amorphous nature of carbon and the crystallographic structure of CeO2 nanoparticles. TEM depicted a sheet-like structure of carbon and orbicular morphology of CeO2. The nanocomposite was impregnated onto fabrics using an immersion and ultrasonication method. The fabrics impregnated with nanocomposites exposed a clear zone of inhibition of E. Coli and S.aureus bacterial strains, indicating potent bactericidal properties. The nanocomposite-impregnated fabrics show efficient and strong photocatalytic activity against P-Rosaniline Hydrochloride (PRH) dye, which was investigated at different concentrations of dye, repeatability, and reusability with time. The notable photocatalytic activity of the fabrics underscores their potential for use in anti-infection applications.
Ultrafiltration membranes have significant potential for application in wastewater treatment. However, membrane fouling seriously affects the separation efficiency and service life of the membrane. ...The preparation of conductive membranes offers a novel idea for removing membrane fouling. In this work, polyethersulfone (PES) mixed matrix membranes containing epigallocatechin gallate-modified multi-walled carbon nanotubes and silanized MXene were simply prepared by nonsolvent-induced phase inversion. Due to the introduction of a three-dimensional network structure electrostatically assembled with the two nanomaterials, the membranes have a great potential for balancing permeability, separating ability, and electrical conductivity. In addition, due to the presence of two kinds of fillers, the modified membrane also showed excellent electrical conductivity and antimicrobial performance, with a conductivity of up to 6.4 mS/cm, while exhibiting an ultra-high bacterial inhibition rate of close to 100 %. More importantly, through electrochemically assisted cleaning, the membrane fouling was efficaciously removed by nanobubbles and electrostatic force, and the flux recoveries after membrane filtration of CR and BSA reached 93.1 % and 91.7 %, respectively. In summary, the composite membrane has lots of promise for use in the purification of wastewater due to its considerable pollution removal effect and long-term operational performance.
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•E-MWCNTs/A-MXene/PES membranes were prepared by conventional phase inversion method.•E-MWCNTs and A-MXene form a three-dimensional network structure by electrostatic assembly.•E-MWCNTs and A-MXene enhanced the membrane conductivity and antimicrobial properties.•Electrochemical defouling and antimicrobial properties extends the life of the membrane.
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