Preparation and Spectrochemical characterization of Ni-doped ZnS nanocomposite for effective removal of emerging contaminants and hydrogen Production: Reaction Kinetics, mechanistic insights.

In this study, we report the successful synthesis of Ni-doped ZnS nanocomposite via a green route using ethanolic crude extract of Avena fatua. The as-synthesized nanocomposite was comprehensively characterized using Dynamic light scattering (DLS), Zeta potential, scanning electron microscopy (SEM), Transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), and Atomic force microscopy (AFM). These analyses provided detailed insights into the size, morphology, composition, surface properties, and structural characteristics of the nanocomposite. Subsequently, the synthesized nanocomposite was evaluated for their photocatalytic performance against the organic dye Methyl orange. Remarkably, the nanocomposite exhibited rapid and efficient degradation of Methyl orange, achieving 90 % degradation within only 30 min of irradiation under UV light. Moreover, the photocatalyst demonstrated an exceptional hydrogen production rate, reaching 167.73 µmolg-1h-1, which is approximately 4.5 times higher than that of its pristine counterparts. These findings highlight the significant potential of Ni-doped ZnS nanocomposite as highly efficient photocatalysts for wastewater treatment and hydrogen production applications.

Co-infection With Dengue Virus and Extensively Drug-Resistant Salmonella typhi.

In South Asia, infectious diseases are associated with significant morbidity and mortality. Malaria, typhoid, and dengue are the most common infectious diseases, and patients may be co-infected with these diseases, resulting in diagnostic and treatment dilemmas. Dengue is caused by the Arboviridae family of viruses and is transmitted by Aedes aegypti. Dengue virus has four serotypes and the symptoms of dengue fever mimic those of other infectious diseases such as malaria, chikungunya, Zika virus disease, influenza A, enteric fever, and coronavirus disease 2019, which are also prevalent in areas of frequent dengue fever outbreak. Dengue fever is characterized by fever, severe myalgia, retro-orbital pain, skin rashes, and bone pain, which is why dengue fever is also referred to as breakbone fever. Patients with secondary dengue virus infection more commonly present with abdominal pain when compared with those with primary dengue virus infection. Salmonella typhi causes enteric fever, which is a human infection with no animal reservoir, but the symptoms of enteric fever closely resemble those of dengue fever. Concurrent infections with multiple organisms are especially difficult to diagnose. In this report, we present the case of a 15-year-old boy from Peshawar, Pakistan, who was co-infected with the dengue virus and extensively drug-resistant Salmonella typhi. To the best of our knowledge, this is the first reported case of co-infection with dengue virus and extensively drug-resistant Salmonella typhi.