Rietveld refinement, Morphological, Optical and Photocatalytic Dye Degradation Studies of Pristine and Sr-Doped SnS2 Hexagonal Nanoplates
Source abstract
Abstract
In the present study, Sr x Sn 1-x S 2 hexagonal nanoplates have been synthesized via a cost-effective hydrothermal route and characterized by XRD, UV-DRS, PL, SEM, EDXS, Zeta potential, and dye degradation. The XRD pattern confirms the structure and FESEM corroborates the hexagonal nanoplate morphology of all the synthesized samples while EDX ascertains the Sr presence in doped samples. The optical band gap energy (E g ) of the samples has been estimated using UV-DRS and is found in the visible region. The negative surface charge is ascertained using the Zeta potential (ζ) analyzer. The dye degradation efficiency of pristine and Sr x Sn 1-x S 2 is tested on RhB under a visible lamp of 250W for 120min and found highest for x = 0.06 sample (90.93 %). The adsorption kinetics follows the pseudo 2 nd order model whereas photodegradation kinetics follows 1 st order kinetics model. Further isotherms processes studied in the dark follow the Langmuir model.
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Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Chalcogenide Semiconductor Thin Films · Quantum Dots Synthesis And Properties
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