In this study, we report the synthesis of two CdS@TiO$_2$ nanocomposites (CT1 and CT2) by two-step low temperature solvothermal decomposition method using two different stoichiometric combinations between CdS and TiO$_2$ nanoparticles (NPs). CdCl$_2$(3-chlorobenzaldehyde thiosemicarbazone)$_2$ was used as a molecular precursor to obtain CdSNPs, whereas titanium isopropoxide was used to obtain TiO$_2$ NPs. The as-prepared CT nanocomposites were characterizedby powder X-ray diffraction, field emission scanning electron microscopy, Raman spectroscopy, transmission electron microscopy and X-ray photoelectron spectroscopy to evaluate their structures and properties. Further, these nanocomposites were used for the photocatalytic degradation of rhodamine B under solar light irradiation. It is found thatCdS@TiO$_2$ (CT1) nanocomposite shows highest degradation efficiency of 98.74% within 60 min as compared to bare TiO$_2$ NPs which shows only 66.40% degradation efficiency. The enhanced photocatalytic efficiency due to charge transfer properties of bare NPs and CT nanocomposites was further investigated by electrochemical analysis and photoluminescencestudies.
Volume 45, 2022
Continuous Article Publishing mode
Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020
Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020
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