Fabrication, characterization and application of polymer based nanomaterials in the removal of pollutants from industrial effluents

B. M. Sangeetha, Noura Ali Moosa Al Balushi, M. Geetha Devi*, Susmita Dutta, K. P. Anjali, Mohammed Al- Abri

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


In this research, multilayer nano thin films fabricated using poly (allyl amine hydrochloride) (PAH), TiO 2 and poly (styrene sulphonate sodium salt) (PSS), on silica template by Layer-by-Layer (L-b-L) technique and its potential application for the photo degradation of textile and oil refinery wastewater under solar irradiation has been reported. TiO 2 nanoparticles of size less than 5 nm were synthesized using modified sol–gel method and the characterization of the particles are performed using Dynamic Light Scattering (DLS), Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Fourier Transform Infra-red Spectroscopy (FTIR). The L-b-L assembly was carried out at pH 2.5 and the development of the thin layers was investigated using UV/Vis spectrophotometer at an absorbance of 230 nm. The morphological characterization of the fabricated film was analyzed using Atomic Force Microscopy (AFM). A comparative study has been carried out using textile and oil refinery effluents for the photo degradation of TiO 2/PSS/PAH thin films and suspension form of TiO 2 by varying the process parameters such as number of bilayers, polymer concentration and solar irradiation time. The TiO 2/Polyelectrolyte multilayer thin films performed extremely well in the reduction of Chemical Oxygen Demand (COD) and Total Organic Carbon (TOC) to the standards. The five-bilayer film considerably reduced the TOC and COD to 85% and 87%, respectively. In TiO 2 suspension form, a reduction in TOC and COD was observed to be 70% and 73.5%, respectively. This study illustrates that immobilized nanoparticles could effectively remove pollutants from wastewater and the process seems to be attractive in the environmental applications.

Original languageEnglish
Article number101748
JournalEnvironmental Technology and Innovation
Publication statusPublished - Aug 2021


  • Effluent
  • Immobilization
  • Layer-by-layer
  • Nano particles
  • Photo degradation
  • Wastewater

ASJC Scopus subject areas

  • Environmental Science(all)
  • Soil Science
  • Plant Science

Cite this