Ti3C2Tx MXene decorated with NiMnO3 / NiMn2O4 nanoparticles for simultaneous photocatalytic degradation of mixed cationic and anionic dyes

Kalaiselvi Chandiran, Muthu Senthil Pandian, Saravanakumar Balakrishnan, Sudhagar Pitchaimuthu, Yong-Song Chen, Krishna Chandar Nagamuthu Raja

Research output: Contribution to journalArticlepeer-review

Abstract

The present report investigated the different mass ratios of Ti3C2Tx MXene decorated NiMnO3 / NiMn2O4 nanoparticles and their enhancement of photocatalytic performance. The NiMnO3 / NiMn2O4 - Ti3C2Tx MXene nanocomposites were synthesized by a simple electrostatic self-assembly method. The physicochemical properties of nanocomposites were analyzed by XRD, SEM, and FESEM with EDAX, FTIR, PL, and UV-Visible spectrometer. The rhombohedral / cubic spinel structure of NiMnO3 / NiMn2O4 was confirmed by the XRD. The SEM and FESEM morphology show that spherical NiMnO3 / NiMn2O4 nanoparticles were decorated on the Ti3C2Tx MXene sheets and also present on the inside of the Ti3C2Tx MXene sheets. The average diameter of NiMnO3 / NiMn2O4 nanoparticles (46 nm) and the interlayer spacing of Ti3C2Tx MXene sheets (56 nm) were measured from FESEM analysis. The energy bandgap of NiMnO3 / NiMn2O4 - MXene nanocomposites was determined as ranging from 1.2 eV to 0.8 eV. The Ni, Mn, O, Ti, C, and F elemental compositions of the composites were analyzed by the EDAX. The effective photo-generated electron transferring from NiMnO3 / NiMn2O4 to Ti3C2Tx MXene was established by the PL quenching of NiMnO3 / NiMn2O4. The 100% degradation efficiency was achieved in methylene blue (MB). The mixed dye degradation rates achieved for Rhodamine B (RhB), methyl orange (MO), and methylene blue (MB) for 90%,72%, and 100% after 50 min in the presence of NiMnO3 / NiMn2O4 -Ti3C2Tx MXene (20 wt. %). According to a scavenger experiment, the predominant species actively involved in the photodegradation process were revealed to •OH and •O2-.

Original languageEnglish
Article number133888
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume692
Early online date6 Apr 2024
DOIs
Publication statusPublished - 5 Jul 2024

Keywords

  • Mixed dyes
  • Nanocomposites
  • Photocatalysis
  • Ti C T MXene
  • Visible light irradiation

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

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