知步里工作室

Pathogenic microorganisms have become a serious threat to human beings all over the world as they cause severe disease illnesses. This study used supercritical carbon dioxide as a green solvent to prepare a nanocomposite composed of copper oxide (CuO) nanoparticles dispersed on the surface of reduced graphene oxide (rGO). The resulting nanocomposite was examined using a various of alanytical techniques. The developed CuO/rGO nanocomposite exhibited potenail antimicrobial ability against a food pathogenic bacterium, Bacillus cereus. Additionality, it showed high toxicity towards B. cereus, confirmed by the means of fluorescent live-dead counting of cells. Its mechanistic role against a food meneac was confirmed by the means of time-kill ability (complete inhibition at 200 min), cell membrane integrity (OD of control: 1.62; CuO/rGO: 3.78 at 60 min), membrane uptake (Control: 27.21

In dye-sensitized solar cells (DSSCs), carbon-based nanocomposites and transition metal dichalcogenides (TMDs) are appealing alternatives to expensive platinum (Pt) counter electrodes (CEs) because of their high electrochemical activity, large surface area, and excellent stability. In this study, reduced graphene oxide (rGO)-supported transition metal sulfide nanocomposites, namely MoS₂@rGO, CoS₂@rGO, and NiS₂@rGO, were synthesized through a sol–gel-assisted hydrothermal method and investigated as counter electrodes for DSSCs as well as photocatalysts for Cr(VI) reduction. Structural analysis confirmed the formation of crystalline cubic NiS₂ nanoparticles uniformly anchored on the reduced graphene oxide framework, forming a porous conductive network with a high surface area of 168.8 m2 g⁻1 and an average pore diameter of 7.6 nm. The NiS₂@rGO electrode exhibited excellent electrocatalytic activity toward the I₃⁻/I⁻ redox couple, delivering a low charge-transfer resistance of 0.18 Ω and enhanced charge transport behavior. When employed as a counter electrode in DSSCs, the device achieved a superior photovoltaic performance with Voc = 0.885 ± 0.03 V, Jsc = 16.5 ± 0.01 mA cm⁻2, FF = 0.68 ± 0.02, and a maximum power conversion efficiency (PCE) of 7.2 ± 0.03

In this work, a trisphenol (TR) was synthesized using hydroxybenzaldehyde and phenol under appropriate experimental conditions. Tri-functional benzoxazines were synthesised utilizing trisphenol (TR) with four different amines, 2-allylamine (aa), furan-2-ylmethanamine (ffa), cyclohexanamine (cha) and adamantan-1-amine (ada) in the presence of paraformaldehyde through Mannich condensation. The TR based furan-2-ylmethanamine polybenzoxazine was chosen for the preparation of composites using bio-calcium silicate (CS) obtained from bio wastes such as egg-shell powder (bio-calcium) and rice husk ash (bio-silica). It was observed that the lowest value of dielectric constant was obtained for 15wt

This study investigates the effects of ultrasonication, microwave treatment, and their combination on the digestibility, physicochemical, thermal, functional, and structural properties of elephant foot yam starch (EFYS). Four sample types were analyzed: native EFYS (NEFYS), ultrasonically modified (US), microwave-modified (MW), and dual-modified (MW + US). Among them, NEFYS, US, and MW + US contained 29.28

This study presents a multi-objective stochastic transportation problem through the application of the Pareto distribution via the green fractional transportation problem of the Pareto distribution. The chance-constrained programming method is applied to transform probabilistic constraints into deterministic constraints. Newton’s divided difference interpolation method is applied to transform several parameters into a single option inside the objective function. Neutrosophic technique has been used to tackle multi-objective optimization problems. The aim is to optimize transportation cost, carbon emission, and time using the goal programming methodology. The impact of parameter fluctuations on optimal solutions is examined via sensitivity analysis. Numerical solution illustrates the efficacy of the proposed approach.