Nanocarbons decorated TiO2 as advanced nanocomposite fabric for photocatalytic degradation of methylene blue dye and ciprofloxacin

Vinod Kumar Pal, Deepak Kumar, Anshika Gupta, Pashupati Pratap Neelratan, L. P. Purohit, Arunvir Singh, Vishal Singh, Sejoon Lee, Yogendra Kumar Mishra, Ajeet Kaushik, Sanjeev Kumar Sharma

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14 Scopus citations

Abstract

In this research, C [graphene (Gr), multi-walled carbon nanotubes (MWCNTs), and single-walled carbon nanotubes (SWCNTs)] decorated TiO2 nanostructures were developed and further utilized to modify textile to achieve high-performance photocatalytic degradation of mixed water pollutants including methylene blue (MB) dye and pharmaceutical active compound, Ciprofloxacin (CPF) on solar radiation exposure (∼105 Lumens). The crystallite sizes of TiO2, TiO2-MWCNT, TiO2-SWCNT, and TiO2-Gr nanocomposites were observed in the 7.2–10.4 nm range. The bandgap, Eg of nanostructured C-TiO2, was observed in the 3.09–3.14 eV range. The photocatalytic performance of C-TiO2 showed almost complete removal of MB under the irradiation of the solar spectrum in just 120 min. Among C-based TiO2 nanocomposites, nanostructured TiO2-SWCNT showed the highest degradation efficiency of ∼98.86 % for MB dye. Further, the textile membrane showed a good degradation efficiency of 99.49 % for MB dye and 95.7 % for CPF within 120 min. An impressive removal efficiency of ∼93 % was observed for the mixture of MB and CPF solution due to a combination of several properties like surface groups (OH & O2−), low charge recombination rate due to CNTs, and small crystal size. This proof-of-the-concept study can be the potential platform to manage water quality according to sustainability goals.

Original languageEnglish
Article number111435
JournalDiamond and Related Materials
Volume148
DOIs
StatePublished - Oct 2024

Keywords

  • Analytical science
  • C-based TiO nanostructures
  • Nano-textile fiber membrane
  • Photocatalytic degradation

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