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Peer-reviewedCC BY-NC-ND 4.0ACS Omega

ZnSe:Fe/ZnS-PVA Materials Are Synthesized as Fenton Photocatalysts for the Degradation of Methylene Blue under Visible Radiation

  • Thi Diem Bui1
  • Quang Liem Nguyen2
  • Nguyen Van Cuong1
  • Trong Tang Nguyen1
  1. 1Industrial University of Ho Chi Minh City , , 12 Nguyen Van Bao , Hanh Thong Ward, ,
  2. 2Vietnam Academy of Science and Technology , , 18 Hoang Quoc Viet , ,
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Abstract

This study describes the production of ZnSe:Fe/ZnS-PVA nanoparticles utilizing poly(vinyl alcohol) (PVA) as a stabilizer in an environmentally acceptable, safe, economical, and easy chemical approach that does not include organometallic compounds. X-ray diffraction (XRD) analysis reveals that the ZnSe:Fe/ZnS-PVA nanoparticles have a cubic structure. The absorption edge in the UV–vis absorption spectrum was used to calculate the optical band gap energy (Eg), which decreased as particle size increased. When Fe-doped ZnSe particles were coated with an additional ZnS layer, their size increased and Eg decreased, causing a shift from blue to green under UV light. Variations in ZnS concentration and Fe doping altered the surface bonding of the nanoparticles and improved the band structure by reducing the band gap, which improved the material’s ability to absorb light in the visible light range and changed its photocatalytic properties. When the electron donor molecule oxalic acid (H2C2O4) and nanoparticles are employed as Fenton photocatalysts in the methylene blue (MB) degradation process under visible light, the Fenton photocatalytic process follows a pseudo-first-order kinetic equation. ZnSe:Fe/4ZnS-PVA nanoparticles exhibited superior photocatalytic activity compared to ZnSe-PVA and ZnSe:Fe-PVA, achieving an apparent rate constant of 0.0100 min–1, which is 4.9 times higher than that of ZnSe-PVA NPs. After 180 min of response, roughly 90% of the MB was degraded. These findings show promise for the material’s practical application in the remediation of hazardous organic dyes in water.

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Cite

BibTeXRIS
BibTeX
@article{bui2026znsefeznspva,
  title = {{ZnSe:Fe/ZnS-PVA Materials Are Synthesized as Fenton Photocatalysts for the Degradation of Methylene Blue under Visible Radiation}},
  author = {Thi Diem Bui and Quang Liem Nguyen and Nguyen Van Cuong and Trong Tang Nguyen},
  journal = {ACS Omega},
  year = {2026},
  month = oct,
  doi = {10.1021/acsomega.6c07946},
  url = {https://pubs.acs.org/acsodf/article/doi/10.1021/acsomega.6c07946/5457246/ZnSe-Fe-ZnS-PVA-Materials-Are-Synthesized-as},
  note = {CC BY-NC-ND 4.0},
}
RIS
TY  - JOUR
TI  - ZnSe:Fe/ZnS-PVA Materials Are Synthesized as Fenton Photocatalysts for the Degradation of Methylene Blue under Visible Radiation
AU  - Thi Diem Bui
AU  - Quang Liem Nguyen
AU  - Nguyen Van Cuong
AU  - Trong Tang Nguyen
PY  - 2026
DA  - 2026/10/23
JO  - ACS Omega
DO  - 10.1021/acsomega.6c07946
UR  - https://pubs.acs.org/acsodf/article/doi/10.1021/acsomega.6c07946/5457246/ZnSe-Fe-ZnS-PVA-Materials-Are-Synthesized-as
AB  - This study describes the production of ZnSe:Fe/ZnS-PVA nanoparticles utilizing poly(vinyl alcohol) (PVA) as a stabilizer in an environmentally acceptable, safe, economical, and easy chemical approach that does not include organometallic compounds. X-ray diffraction (XRD) analysis reveals that the ZnSe:Fe/ZnS-PVA nanoparticles have a cubic structure. The absorption edge in the UV–vis absorption spectrum was used to calculate the optical band gap energy (Eg), which decreased as particle size increased. When Fe-doped ZnSe particles were coated with an additional ZnS layer, their size increased and Eg decreased, causing a shift from blue to green under UV light. Variations in ZnS concentration and Fe doping altered the surface bonding of the nanoparticles and improved the band structure by reducing the band gap, which improved the material’s ability to absorb light in the visible light range and changed its photocatalytic properties. When the electron donor molecule oxalic acid (H2C2O4) and nanoparticles are employed as Fenton photocatalysts in the methylene blue (MB) degradation process under visible light, the Fenton photocatalytic process follows a pseudo-first-order kinetic equation. ZnSe:Fe/4ZnS-PVA nanoparticles exhibited superior photocatalytic activity compared to ZnSe-PVA and ZnSe:Fe-PVA, achieving an apparent rate constant of 0.0100 min–1, which is 4.9 times higher than that of ZnSe-PVA NPs. After 180 min of response, roughly 90% of the MB was degraded. These findings show promise for the material’s practical application in the remediation of hazardous organic dyes in water.
SN  - 2470-1343
ER  -