Boosted charge separation via CeS over dual Z-scheme ZnO-CeS-MnO core double-shell nanocomposite for the degradation of diverse dye pollutants.

Herein, core double-shell direct dual Z-scheme ZnO-CeS-MnO nanocomposite was synthesized via a hydrothermal route along with pure ZnO, CeS, MnO, and characterized by numerous characterization tools for application in synthetic dyes degradation. The XRD, Raman, and FTIR analyses have confirmed the nanocomposite formation. TEM images exhibited the core double-shell morphology with an average particle diameter of 81 nm and stacking of ZnO, CeS, and MnO.

Expectant management versus systemic methotrexate in the management of persistent pregnancy of unknown location, a seven-year retrospective analysis.

Purpose: To compare Expectant management to systemic methotrexate in the management of persistent pregnancy of unknown location with beta-hCG levels below the discrimination zone.

Methods: A retrospective cohort study was conducted on 71 women with persistent pregnancy of unknown location. They were divided into two groups according to the applied management; Group 1, (n = 40) who were managed expectantly and Group 2 (n = 31) who were given a single dose of methotrexate.

Potential of GTL biosolids in a circular economy: investigating blending, pyrolysis, activation, and characterisation.

Qatar's population has been rapidly increasing in recent years, and the country's long-term vision, QNV 2030, aims to sustain this growth by transforming the country into a sustainable state. One aspect of this vision is to convert waste into value-added products, which will reduce the environmental and spatial burden associated with waste in Qatar, while contributing to a circular economy. This study describes methods for producing biochar and activated carbon (AC) from gas-to-liquids derived biosolids, cardboard waste and mixed samples using pyrolysis and activation techniques.

Removal of Methylene Blue from Water Using Magnetic GTL-Derived Biosolids: Study of Adsorption Isotherms and Kinetic Models.

Global waste production is significantly rising with the increase in population. Efforts are being made to utilize waste in meaningful ways and increase its economic value. This research makes one such effort by utilizing gas-to-liquid (GTL)-derived biosolids, a significant waste produced from the wastewater treatment process.

XPS, structural and antimicrobial studies of novel functionalized halloysite nanotubes.

A novel robust preparation method based on thermal salt decomposition has been elaborated for synthesis of halloysite nanotubes (HNTs) impregnated with silver and iron oxide nanoparticles. The developed method is simple, time-effective, and can be employed for large scale material fabrication. Different characterization techniques, including X-ray diffraction (XRD), scanning and transmission electron spectroscopy (SEM and TEM) and energy dispersive X-ray spectroscopy (EDS) have been used to characterize the functionalized HNTs composite materials.

Impact of Pregrown SiO on the Carrier Selectivity and Thermal Stability of Molybdenum-Oxide-Passivated Contact for Si Solar Cells.

Thin SiO interlayers are often formed naturally during the deposition of transition metal oxides on silicon surfaces due to interfacial reaction. The SiO layer, often only several atomic layers thick, becomes the interface between the Si and deposited metal oxide and can therefore influence the electrical properties and thermal stability of the deposited stack. This work explores the potential benefits of controlling the properties of the SiO interlayer by the introduction of pregrown high-quality SiO which also inhibits the formation of low-quality SiO from the metal-oxide deposition process.

Temperature-dependent Battery Performance of a Na V (PO ) F @MWCNT Cathode and In-situ Heat Generation on Cycling.

Excellent structural stability, high operating voltage, and high capacity have made Na V (PO ) F a promising cathode material for sodium-ion batteries. However, high-temperature battery performances and heat generation measurements have not been systematically reported yet. Carbon-coated Na V (PO ) F @MWCNT (multi-walled carbon nanotube) samples are fabricated by a hydrothermal-assisted sol-gel method and the electrochemical performances are evaluated at three different temperatures (25, 45, and 55 °C).

Interfacial Kinetics and Ionic Diffusivity of the Electrodeposited MoS Film.

The transition-metal disulfide (MoS) is a fantastic material used in diverse fields of applications. Ionic diffusivity and interfacial exchange current density are model parameters that play a crucial role for the optimization of device performances, which are not clearly known for this material. The additive-free dense film of MoS has been deposited by a facile electrodeposition approach and characterized by structural, morphological, and compositional analyses.