Treatment of textile wastewater has been a matter of considerable interest because of the potential toxicity, colloidal stability, and deformable nature of dyes. Herein, a novel polyaniline (PANI)/polyvinylidene fluoride (PVDF) hybrid membrane is developed to remove textile wastewater dyes. The hybrid membrane's contact angle decreases by increasing the concentration of polyaniline in the PVDF matrix, enhancing the hybrid membrane's hydrophilicity. Membrane properties, including porosity, antifouling property, solvent content, and pure water flux, are improved in the hybrid membrane compared with neat PVDF membranes. The purified water flux is enhanced from 28 to 47 L m⁻² h, which indicates the impact of PANI on the hydrophilicity of the hybrid membranes. Among the hybrid membranes, 3P exhibits 85% dye rejection at 0.1 MPa operating pressure. Hence, the incorporation of PANI in the PVDF matrix is proposed to enhance the hybrid membrane's dye rejection and antifouling properties.

Formamidinium lead bromide (FAPbBr₃) nanocrystals have emerged as a powerful platform for optoelectronic applications due to their pure green photoluminescence (PL). However, their low colloidal stability under storage and operation reduces the potential use of FAPbBr₃ perovskite nanocrystals (PeNCs) in various applications. In this study, we prepared the poly(L–lactic acid) (PLLA) nanofibrous membrane embedded with FAPbBr₃ perovskite nanocrystals by electrospinning the perovskite and PLLA precursor solution. This is a simple and low-cost technique for the direct confinement of nano-sized functional materials in the continuous polymer nanofibres. PLLA as a polymer matrix provided a high surface framework to fully encapsulate the perovskite NCs. In addition, we found that FAPbBr₃ PeNCs crystallize spontaneously inside the PLLA nanofibre. The resultant PLLA-FAPbBr₃ nanofibrous membranes were stable and remained in the water for about 45 days without any evident decomposition. The results of this research support the idea of new possibilities for the production of air-stable FAPbBr₃ PeNCs by forming a composite with PLLA polymer. The authors believe this study is a new milestone in the development of highly stable metal halide perovskite-based nanofibres, which allow for potential use in lasers, waveguides, and flexible energy harvesters.

Mosquitoes are highly important carriers of diseases, such as malaria, dengue, chikungunya, and various other life-threatening illnesses. Traditionally, many chemicals, such as plant extracts, oils, and smoke, have been employed for the purpose of repelling mosquitoes. Various plants possess essential oils and chemicals that have been proven to be good insect repellents and are commonly regarded as weeds. The present study focused on the development of eco-friendly, nonhazardous mosquito-repellent fabrics using cinnamon and eucalyptus extracts. First, eucalyptus and cinnamon extracts were produced separately using ethanol and water as solvents with and without heating. Forty-eight different fabric samples were prepared by applying these extracts at three levels of process application temperature. A steam dye bath sampling machine was utilized to execute the extraction application process on fabric samples. The mosquito repellency performances of all of the samples were evaluated using the cage test method. The cage test revealed that all of the samples of eucalyptus and cinnamon extract-applied fabrics showed mosquito repellency performance at some level. However, the fabric samples treated with the heated extract of eucalyptus ethanol (EE-H) at 60 °C showed the best results in terms of mosquito repellency (85.56%) among all combinations. In addition to repellency, the impact of washing durability, UV shielding, and antibacterial performance was also evaluated. This research demonstrated a new method for creating a fabric that repels mosquitoes and has effective antibacterial properties as well as promising ultraviolet protection factor (UPF) rating. This fabric protects the wearer from the significant health risks posed by mosquitoes and harmful UV radiation while also maintaining its cleanliness. Moreover, the utilization and implementation of plant-derived coatings on textiles contribute to the advancement of sustainable methods (SDG 9 and SDG 12) in the chemical processing industry of textiles, ultimately leading to a reduction in their environmental footprint.