In recent times, there has been a surge of interest in the unique characteristics and possible applications of nanoparticles in various fields, including environmental clean-up. The contamination of water sources with pharmaceutical and organic substances has emerged as a significant environmental concern. Semiconductor nanoparticles, particularly Bi2S3 nanoparticles, have garnered considerable attention due to their efficacy and environmentally friendly nature in advanced oxidation processes (AOPs). These nanoparticles have shown remarkable photocatalytic abilities in the destruction of pollutants when exposed to UV-visible light. This study covers the production, characterization, and degradation of Bi2S3 nanoparticles in relation to organic and pharmaceutical contaminants. By utilizing co-precipitate methods, it becomes possible to precisely manipulate the size, shape, and composition of the nanoparticles, which are crucial factors in determining their catalytic effectiveness. The created nanoparticles are then examined using various analytical techniques, such as Powder X-ray Diffraction (P-XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), UV-visible spectroscopy, Photoluminescence study (PL), colour chromaticity coordinates (CIE), and Dynamic light scattering study (DLS). The catalytic capability of the synthesised compounds was compared to the degradation of Picric acid and paracetamol as model pollutants. The observed photocatalytic activity of these nanoparticles indicates their potential in water purification and environmental clean-up. The findings suggest that incorporating these nanoparticles into practical systems for pollutant degradation is feasible and can be applied in diverse scenarios. The results shed light on the efficient utilization of Bi2S3 nanoparticles as photocatalysts for the oxidation of drugs and organic contaminants. By utilizing Bi2S3 nanoparticles, the elimination of pharmaceutical and organic pollutants from water sources becomes achievable, thereby contributing to the preservation and safeguarding of the environment and public health. 

A novel photocatalytic activity of Bi2S3 nanoparticles for pharmaceutical and organic pollution removal in water remediation

Sustainable Solutions: ZnO Nanoparticles for Enhanced Photocatalytic Treatment of Paracetamol and Diclofenac

We present a green route for the colloidal synthesis of undoped and silver (Ag) doped cadmium sulfide (CdS) quantum dots (QDs). We have used olive oil as the reaction medium, which acted as a source of oleic acid (OA) ligand in the green synthesis of CdS QDs. With the increase in OA concentration, the dispersibility of CdS QDs improved. The water-dispersible CdS QDs were prepared via exchanging OA’s associated ligand with 3-mercaptopropionic acid (MPA). The MPA-capped CdS QDs showed the disappearance of the S-H peak as characterized via FTIR. The crystal and optical properties of Ag-doped CdS QDs were investigated, and the spectral red shift in the absorption spectra was observed. The CdS QDs with low Ag doping concentration increased the lifetime of excitons, but the average lifetime was suppressed at a higher concentration. We also discussed the variation in the properties of the CdS QDs through ligand engineering and Ag doping. These doped and undoped QDs have the potential for applications in photocatalysis, water splitting, solar cells, etc. In addition, water dispersible QDs can be helpful for bioimaging, and drug delivery applications

Investigation of Ag doping and ligand engineering on green synthesized CdS quantum dots for tuning their optical properties

Green Synthesis Of CdS Quantum Dot Using (Citrus Limon (L.) Osbeck) Leaves Extract As Stabilizing Agent And Investigate Its Emission Properties

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Green Synthesis Of CdS Quantum Dot Using (Citrus Limon (L.) Osbeck) Leaves Extract As Stabilizing Agent And Investigate Its Emission Properties