A-site composition tuning in methylammonium-based metal halide perovskite colloidal nanocrystals.

Utilizing the soft-lattice nature of metal halide perovskites, we employ post-synthetic cross-ion exchange to synthesize a series of narrow band-gap colloidal nanocrystals of methylammonium-based lead iodide solid solutions of composition FAMAPbI, as well as those of triple-cation composition CsFAMAPbI (TCPbI). The ability to finely tune the compositions not only helps in tailoring the optical properties in the near-infrared region, but also improves the stability of these colloidal nanocrystals towards moisture, which has been demonstrated as compared to their bulk counterparts. The thermal stability of these solid solutions is also comparable to that of the bulk, as evidenced by thermogravimetric studies.

Assessment of reproductive, genotoxic, and cytotoxic effects of leachate-contaminated water in male mice.

Leachate-contaminated water (LCS) poses significant health risks due to its heavy metal content and altered physicochemical properties. This study examined the physicochemical parameters and heavy metal levels in LCS and assessed its reproductive toxicity, genotoxicity, and cytotoxic effects in exposed mice. Groups of mice (n = 5) were orally administered 100 μL of 30 % and 70 % LCS (v/v) twice daily for 35 days.

Target immobilized phases of heavy metals in hazardous waste based lightweight aggregate.

The potential leaching risk poses a concern for the large-scale recycling of hazardous waste as lightweight aggregates (LWAs). This paper investigated the combination state of heavy metals in target immobilized phases of LWA through both theoretical calculations and experimental verification. Results reveal that Pb can enter the feldspar crystal cell to form stable interstitial solid solutions, while Cu, Cr, and Ni can replace specific ions in spinel to form replacement solid solutions.

Assessing the role of the for-profit private healthcare sector in malaria elimination efforts in Bangladesh: a cross-sectional study of challenges and opportunities.

Background: Among 13 endemic districts, the Chittagong Hill Tracts bear more than 90% of Bangladesh's malaria burden. Despite the private sector's prominence in rural healthcare, its role in malaria management remains underutilized. This study aimed to strategize leveraging the for-profit private sector, such as diagnostic and treatment centers, to bolster national malaria surveillance and control, advancing Bangladesh toward malaria elimination by 2030.

Simultaneous Removal of As(iii) and As(v) from Aqueous Solution by Using Iron-Functionalized Polythiophene: A Novel Approach toward Water Treatment.

Arsenic contamination in groundwater poses a significant threat to human health, affecting millions worldwide. This study presents a novel approach for simultaneous remediation of both As(III) and As(V) by using iron-functionalized polythiophene (PTh@Fe) composites. The PTh@Fe composite was synthesized by a reduction process involving FeCl/FeCl byproducts of polymerization, resulting in a highly efficient adsorbent for both As(III) and As(V) species.