Characterization, luminescence and dye adsorption study of manganese and samarium doped and co-doped zinc sulfide phosphors

Yaemphutchong, Sila; Wattanathana, Worawat; Deeloed, Wanchai; Panith, Pasinee; Wuttisarn, Ratthapit; Ketruam, Benjarut; Singkammo, Suparat; Laobuthee, Apirat; Wannapaiboon, Suttipong; Hanlumyuang, Yuranan

doi:10.1016/j.optmat.2020.109965

Cited by 8 publications

(1 citation statement)

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“…This peak may indicate adsorptive moisture on the material's surface since it indicates the existence of hydroxyl (alcohol) functional groups in the substance. The significant peaks detected around 1630 cm −1 can also be attributed to the carboxyl (C=O) stretching vibration because the functional group is present in the adsorbed residues 31 . This suggests that the adsorbed residues contain carboxylic acid or ester groups.…”

Section: Resultsmentioning

confidence: 99%

Luminescence and photocatalytic degradation of indigo carmine in the presence of Sm3+doped ZnS nanoparticles

Lianmawii,

Singh

2023

Sci Rep

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Industrial wastewater discharge is well acknowledged to constitute a significant environmental and public health risk. In addition, synthetic dyes used in the textile sector are major culprits in water pollution. The amount of water polluted by these dyes is simply staggering. We urgently address this issue to protect our planet and health. The degradation of indigo carmine dye in the presence of Sm3+-doped ZnS nanoparticles is reported in this study and characterized by XRD, FTIR, SEM, EDX, TEM, BET, PL, UV, etc. The particle size calculated from the Scherrer equation was 3–12 nm. When excited at 395 nm, Sm3+ undergoes f–f transitions, which are visible as prominent peaks in the photoluminescence spectrum at 559, 595, and 642 nm wavelengths. The catalyst showed vigorous catalytic activity for dye degradation, with a 93% degradation rate when used at 15 mg/L catalyst within 210 min. The reaction was found to have pseudo-first-order kinetics. After applying the Freundlich and Langmuir data, the Langmuir isotherm offered the best fit. The findings indicate that the Sm3+-doped ZnS catalyst might be successfully used in the degradation of dyes present in the environment. Doping with Sm3+ ions can significantly change the photocatalytic breakdown of indigo carmine and the luminescence characteristics of ZnS.

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Section: Resultsmentioning

confidence: 99%