Synthesis of CdS Nanocrystalline using Parkia speciosa Hassk Seeds Extract: Optic, Structure, and Morphology

Iwan Syahjoko Saputra, Nanda Dewi Septianti, Yoki Yulizar, Yogi Nopiandi Permana

Abstract


Cadmium sulfide (CdS) nanocrystalline was successfully synthesized using Parcia speciosa Hassk. This study aims to utilize Parcia speciosa hassk seeds as a source of natural sulfur in the modification of CdS nanocrystalline. The method used is the green synthesis eco-friendly of approach. Powders of CdS nanocrystalline was characterized by X-ray diffraction (XRD), UV-Vis diffuse reflectance spectrophotometer (UV-Vis DRS), Particle size analyzer (PSA), Scanning electron microscopy-energy dispersive X-ray (SEM-EDX), Fourier transform infrared spectroscopy (FTIR). XRD shows the peak of a specific CdS nanocrystalline at 2 theta: 27.66o, 49.92o, and 60.13o respectively. CdS crystal average size of 23 nm. Analysis of UV-Vis DRS showed absorption at the wavelength of 496 nm.The calculation results, obtained band gap value CdS nanocrystalline of 2.5 eV. The results of PSA showed CdS particle size distribution is ± 98 nm. SEM-EDX shows the morphological of CdS nanocrystalline has sphere shape with a component of element Cd (83%) and S (17%) respectively. Analysis of FTIR showed the presence of Cd-S vibrations at wavenumber 512 cm-1.

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