Water remediation capability of cubic-phase CdS nanoparticles as photocatalyst on photodegradation of aqueous rhodamine 6G dye under UV irradiation
Nor Azlia Aziz, Chan Kok Sheng, Hengjian Jie, Atomic M&E Sdn Bhd, 5A, Jalan Seri Orkid 33, Taman Seri Orkid, 81300 Skudai, Johor, Malaysia
Abstract
Cubic-phase cadmium sulfide (CdS) nanoparticles were formulated through dropwise precipitation. XRD analysis shows that the CdS has an average nanocrystallite size of approximately 3.36 nm. FTIR results reveals that a strong band appeared around 600 cm-1 is due to Cd-S bonds. SEM image demonstrates that many tiny spherical nanoparticles are homogeneously distributed on the sample surface. The CdS nanoparticles show a prominent UV-Vis absorption peak at 506 nm with a direct band gap of 2.24 eV. CdS nanoparticles has induced remarkable photobleaching effect on the highly stable R6G dye solution under UV illumination, which is applicable for future wastewater treatment.