In this work, we have reported a successful synthesis of g-C3N4/CoFe2O4 nanocomposite material using facile co-precipitation method for photocatalytic degradation methylene blue dye (MB). The crystalline structure, functional groups present, Surface area, Band gap energy and surface charge the synthesized photocatalysts were investigated by powder x-ray diffraction (PXRD), Fourier transfer Infrared (FTIR) Spectroscopy, BET, UV-Vis spectroscopy pHpzc techniques respectively. pXRD result...

Nutrient enrichment of the aquatic system promotes eutrophication, which degrades aesthetic and economic value water systems. On other hand, global supply nutrients such as phosphate is dwindling. Hence, from viewpoint both eutrophication sustainable use nutrients, their removal recovery wastewater critical. Among various technologies practiced today, adsorption represents an economically feasible, operationally simple technique. However, to utilize potential adsorption, finding effective...

Peroxidase memetic nanozymes with their free radical-mediated catalytic actions proved as efficacious antibacterial agents for combating bacterial resistance. Herein, nanocellulose (NC) extracted from Eragrostis teff straw was used to prepare NC/Fe3O4/Ag peroxidase nanozyme an and wound healing agent. Characterization of the XRD, FTIR, SEM-EDX, XPS confirmed presence silver NPs magnetite phase iron oxide dispersed on nanocellulose. The activity prepared examined using TMB H2O2 substrates...

Given their stability, ease of preparation, high catalytic activity, and lower cost, enzyme mimetic nanomaterials (nanozymes) represent an emerging class chemosensors convenient for food safety monitoring. Herein, Ag-MoS2 nanozyme is reported as effective peroxidase mimic colorimetric detection thiabendazole (TBZ), a pesticide used in the postharvest process fruits. The synergetic effect Ag on MoS2 resulted enhanced peroxidase-like activity (45%) that catalyzed chromogenic reaction between...

Although nanozymes proved a promising utility in sensing applications, they often lack rational approach their design. Herein, magnetite chitosan hydrogel (MCH) is reported as peroxidase nanozyme for the smartphone-assisted colorimetric detection of thiabendazole (TBZ). Chitosan due to its polycationic nature, renders microenvironment similar amino acids HRP enzyme. Characterizations using SEM, XRD, and XPS confirmed distribution Fe3O4NPs on matrix. The activity was demonstrated TMB H2O2...

Industrial effluents containing phenolic compounds are a major public health concern and thus require effective robust remediation technologies. Although laccase-like nanozymes generally recognized as being catalytically efficient in oxidizing phenols, their support materials often lack resilience harsh environments. Herein, bacterial nanocellulose (BNC) was introduced sustainable, strong, biocompatible, environmentally friendly biopolymer for the synthesis of nanozyme (BNC/Cu). A native...

Compared with the conventional analytical methods, nanozyme-based colorimetric sensors offer simpler and more accessible solutions for point-of-need food safety monitoring. Herein, Alginate-Cu (AlgCu) is reported as a robust laccase mimetic nanozyme detection of sulfite in red wine, common preservative winemaking. AlgCu represents rational design nanozymes where multifunctional group alginate used coordination environment Cu catalytic center, mimicking amino acids microenvironment natural...

Chitosan–Cu represents a rational design of laccase nanozyme with robust catalytic oxidation phenolic compounds.

An inexpensive flexible plasmonic substrate exploiting the intrinsic properties of paper and anisotropic Ag@SiO₂ nanocubes with improved SERS activity is demonstrated.

Abstract Since the introduction of bismuth‐modified electrodes in Anodic Stripping Voltammetry, it has been used to determine heavy metals various matrices. However, most reports focused on water samples due fewer sample treatment requirements. In this study, Square Wave Voltammetry technique with a glassy carbon electrode is reported for simultaneous determination lead and cadmium content paints. Analysis paint collected from three industries Ethiopia showed excellent percent recovery...

Laccase is an effective biocatalyst for the degradation of persistent phenolic pollutants.

Abstract Phosphate removal/recovery is essential to maintain the quality of aquatic systems and ensure sustainable use phosphorous. Herein Mg‐nano biochar (Mg/NBC) prepared as an effective phosphate adsorbent through valorization spent coffee grounds into nanobiochar by hydrothermal acid digestion its resulting from a slow pyrolysis. Characterization was done SEM, FTIR, BET, XRD. Mg/NBC showed 12.84 % higher adsorption capacity than unmodified nanobiochar. Adsorption studies confirmed that...

Abstract Herein, Ag nanoparticles (NPs) modified MoS 2 (Ag−MoS ) was applied to the surface of glassy carbon (GC) produce a robust electrochemical sensor for detection thiabendazole, common antifungal in post‐harvesting fruits. Cyclic voltammetry studies confirmed thiabendazole exhibited an irreversible, diffusion‐controlled process on Ag−MoS with two‐fold increase peak current than pristine 2. A square wave used TBZ. The developed linear range between 1–10 μM LOD down 0.1 (S/N>3)....

Abstract Phosphate enrichment of the aquatic system often impacts their aesthetic and ecological values. Hence, phosphate recovery is essential to maintain quality systems ensure sustainable use phosphorous. Herein, Mg-modified nanobiochar from spent coffee grounds (Mg/NBC) proposed as an efficient adsorbent for recovery, a phosphorous-release fertilizer. The was obtained by acid digestion biochar resulting pyrolysis. effect parameters viz pH, contact time, dose adsorbent, initial...