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Investigation of EG-Bi2S3 nanorods photocatalytic activity under visible light for dye degradation from aquatic system.
- Source :
- Environmental Science & Pollution Research; Jun2023, Vol. 30 Issue 28, p71628-71636, 9p
- Publication Year :
- 2023
-
Abstract
- Bi<subscript>2</subscript>S<subscript>3</subscript>, 5 ml EG-Bi<subscript>2</subscript>S<subscript>3</subscript>, and 10 ml EG-Bi<subscript>2</subscript>S<subscript>3</subscript> were synthesized by employing solvothermal route. X-ray diffraction, UV-vis absorption, photoluminescence, Raman, scanning electron microscopic studies confirmed the structural, optical, morphological behaviors. The XRD pattern of Bi<subscript>2</subscript>S<subscript>3</subscript>, 5 ml EG-Bi<subscript>2</subscript>S<subscript>3</subscript>, and 10 ml EG-Bi<subscript>2</subscript>S<subscript>3</subscript> was correlated well with JCPDS # 65-2435. The crystallite size was found to be 57, 49, and 40 nm. The photoluminescence spectra showed semiconducting property of prepared Bi<subscript>2</subscript>S<subscript>3</subscript>, 5 ml EG-Bi<subscript>2</subscript>S<subscript>3</subscript>, and 10 ml EG-Bi<subscript>2</subscript>S<subscript>3</subscript>. The absorption spectra of Bi<subscript>2</subscript>S<subscript>3</subscript>, 5 ml EG-Bi<subscript>2</subscript>S<subscript>3</subscript>, and 10 ml EG-Bi<subscript>2</subscript>S<subscript>3</subscript> nanorods were well matched with the spectra of a previous report. The bandgap values of Bi<subscript>2</subscript>S<subscript>3</subscript>, 5 ml EG-Bi<subscript>2</subscript>S<subscript>3</subscript>, and 10 ml EG-Bi<subscript>2</subscript>S<subscript>3</subscript> were calculated to be 1.56, 1.45, and 1.3 eV in reducing order. The morphology of Bi<subscript>2</subscript>S<subscript>3</subscript>, 5 ml EG-Bi<subscript>2</subscript>S<subscript>3</subscript>, and 10 ml EG-Bi<subscript>2</subscript>S<subscript>3</subscript> samples showed the development of nanorods. The 10 ml EG-Bi<subscript>2</subscript>S<subscript>3</subscript> sample showed better development of nanorods with the addition of ethylene glycol. The agglomeration was considerably reduced with the mixing of solvent. Bi<subscript>2</subscript>S<subscript>3</subscript>, 5 ml EG-Bi<subscript>2</subscript>S<subscript>3</subscript>, and 10 ml EG-Bi<subscript>2</subscript>S<subscript>3</subscript> catalysts were added to the methylene blue dye solution and its photocatalytic properties were investigated by reducing toxic pollutants under light. The 10 ml EG-Bi<subscript>2</subscript>S<subscript>3</subscript> sample with neutral pH and 0.1 g of catalyst was added and investigated which showed 86% of efficiency towards dye degradation. The narrow bandgap, defined morphology of 10 ml EG-Bi<subscript>2</subscript>S<subscript>3</subscript>, made a positive result towards efficient photocatalytic activity. [ABSTRACT FROM AUTHOR]
- Subjects :
- VISIBLE spectra
PHOTOCATALYSTS
NANORODS
DYES & dyeing
ETHYLENE glycol
METHYLENE blue
Subjects
Details
- Language :
- English
- ISSN :
- 09441344
- Volume :
- 30
- Issue :
- 28
- Database :
- Complementary Index
- Journal :
- Environmental Science & Pollution Research
- Publication Type :
- Academic Journal
- Accession number :
- 164227236
- Full Text :
- https://doi.org/10.1007/s11356-021-14933-z