Cobalt-doped SnS2 nanoplates for high-efficiency catalysis applications
MATERIALS CHEMISTRY AND PHYSICS(2024)
Abstract
The photocatalysis degradation of methyl iso thiazolinone (MIT) in water was effectively performed using cobaltdoped tin sulfide (Co-SnS2) nanoplates under UV irradiation. X-ray diffraction patterns (XRD) show that the crystallite size of nanoplates increases from 26 nm to 48 nm. Undoped SnS2 nanoplates exhibit plate-like nanostructure with smooth surfaces, with a size of 150-400 mu m and a 50-70 nm thickness. Doping SnS2 nanoplates with cobalt increases the nanoplate's size to 300-600 nm. SnS2 and Co-doped SnS2 nanoplates have indirect bandgap energy with values of 1.95 and 1.86 eV, respectively. On the other hand, the electrical conductivity of SnS2 and Co-doped SnS2 nanoplates was 1.67 x 10-5 S.cm- 1 and 1.64 x 10-4 S.cm- 1, which increases to 6.54 x 10-4 S.cm- 1 and 1.25 x 10-2 S.cm- 1 upon UV irradiation, respectively. The higher degradation efficiency of a 5 mg/L concentration of MIT via SnS2 and Co-SnS2 nanoplates after 160 min is 66% and 91%, respectively. Finally, the photodegradation process was investigated using UV-VIS and FTIR analysis.
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Key words
Cobalt doped tin sulfide(Co-SnS2) nanoplates,Methylisothiazolinone (MIT),Photocatalytic degradation process,Optical band structure,Electrical conductivity
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