From Structure to Optics: The pH-Temperature Interplay in Aqueous Solution CdS Nanoparticles.

ABSTRACT: Cadmium sulfide (CdS) nanoparticles are classified as II-VI semiconductor materials, used in optoelectronic devices due to a band gap (E_g). In this study, CdS nanoparticles were synthesized by the chemical precipitation method, and a systematic evaluation of pH (4.8-10.1) and temperature (50, 75, and 90 °C) was conducted. The effects of these variables were evaluated by UV-VIS spectroscopy, X-ray diffraction (XRD), and scanning electron microscopy (SEM). Results demonstrate that variables determine crystallite sizes (C_s), cluster sizes, and optical properties. CdS crystallization is more affected by pH conditions than by temperature during synthesis; the change in peak intensity in 2θ = 24-29° suggests the formation of a cubic phase (alkaline conditions) and a transit

SUBMITTER: Sanchez-Ramirez EA 

PROVIDER: S-EPMC12788112 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature