Manganese disulfide-silicon dioxide nano-material: Synthesis, characterization, photocatalytic, antioxidant and antimicrobial studies

Ashraf MA 1 , Peng WX 2 , Fakhri A 3 , Hosseini M 4 , Kamyab H 5 , Chelliapan S 6

Affiliations 

  • 1 School of Forestry, Henan Agricultural University, Zhengzhou 450002, China; Department of Geology Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia; School of Environmental Studies, China University of Geosciences, 430074 Wuhan, China. Electronic address: aqeel@cug.edu.cn
  • 2 School of Forestry, Henan Agricultural University, Zhengzhou 450002, China. Electronic address: pengwanxi@163.com
  • 3 Young Researchers and Elites Club, Science and Research Branch, Islamic Azad University, Tehran, Iran. Electronic address: ali.fakhri88@yahoo.com
  • 4 Department of Science, Islamshahr Branch, Islamic Azad University, Sayad Shirazi St. Islamshahr, Tehran, Iran
  • 5 Engineering Department, Razak Faculty of Technology and Informatics, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100 Kuala Lumpur, Malaysia; Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, 845 West Taylor Street, Chicago, IL 60607, USA. Electronic address: hesam_kamyab@yahoo.com
  • 6 Engineering Department, Razak Faculty of Technology and Informatics, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100 Kuala Lumpur, Malaysia
J. Photochem. Photobiol. B, Biol., 2019 Sep;198:111579.
PMID: 31401316 DOI: 10.1016/j.jphotobiol.2019.111579

Abstract

The sol-gel/ultrasonically rout produced the novel MnS2-SiO2 nano-hetero-photocatalysts with the various ratio of MnS2. Prepared nano-catalyst were investigated in the photo-degradation of methylene blue under UV light illumination. Structural and optical attributes of as-prepared nano-catalysts were evaluated by X-ray diffraction and photoelectron spectroscopy. The morphological were studied by scanning electron microscopy-EDS, and dynamic light scattering. The diffuse reflectance spectroscopy was applied to examine the band gap energy. The Eg values of SiO2, MnS2-SiO2-0, MnS2-SiO2-1, and MnS2-SiO2-2 nanocomposites are 6.51, 3.85, 3.17, and 2.67 eV, respectively. The particle size of the SiO2 and MnS2-SiO2-1 nanocomposites were 100.0, and 65.0 nm, respectively. The crystallite size values of MnS2-SiO2-1 were 52.21 nm, and 2.9 eV, respectively. MnS2-SiO2 nano-photocatalyst was recognized as the optimum sample by degrading 96.1% of methylene blue from water. Moreover, the influence of pH of the solution, and contact time as decisive factors on the photo-degradation activity were investigated in this project. The optimum data for pH and time were found 9 and 60 min, respectively. The photo-degradation capacity of MnS2-SiO2-2 is improved (96.1%) due to the low band gap was found from UV-vis DRS. The antimicrobial data of MnS2-SiO2 were studied and demonstrated that the MnS2-SiO2 has fungicidal and bactericidal attributes.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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