A comparative study for the removal of methylene blue dye by N and S modified TiO2 adsorbents

Tutkimustuotos: Lehtiartikkeli

Tutkijat

  • Shila Jafari
  • Feiping Zhao
  • Dongbo Zhao
  • Manu Lahtinen
  • Amit Bhatnagar
  • Mika Sillanpää

Organisaatiot

  • Lappeenranta University of Technology
  • Hunan Normal University
  • University of Jyväskylä
  • University of Eastern Finland

Kuvaus

Successful removal of methylene blue (MB) dye from aqueous solutions using nitrogen and sulfur modified TiO2(P25) nanoparticles has been demonstrated in this study. The modified adsorbents were characterized using various analytical methods, such as X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The adsorption potential of S-TiO2, N-TiO2 and TiO2(P25) type adsorbents was tested for the removal of MB dye. The kinetic studies indicated that the adsorption of MB dye followed the pseudo-first order model, while desorption processes followed the second order model. The adsorption capacity of the adsorbent proved to be increasing as a function of initial pH of the solution. The maximum adsorption capacities were found to be 350.66, 410.12 and 282.84 mg/g of S-TiO2, N-TiO2 and TiO2(P25), respectively. It can be concluded that modification of TiO2(P25) nanoparticles with N and S leads to a higher adsorptive removal of MB.

Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli4721
Sivut90-98
Sivumäärä9
JulkaisuJournal of Molecular Liquids
Vuosikerta207
TilaJulkaistu - 2015
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 12350837