Long single crystalline α-Mn2O3nanorods: Facile synthesis and photocatalytic application

Kalaiselvi Chandiran, Ramesh Aravind Murugesan, Revathi Balaji, Nirmala Grace Andrews, Sudhagar Pitchaimuthu, Krishna Chandar Nagamuthu Raja*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)
26 Downloads (Pure)


Single crystalline cubic sesquioxide bixbyite α-Mn2O3 nanorods have been synthesized successfully by a simple, low cost, environmental benign hydrothermal route. As synthesized γ-MnOOH were calcined at 600 °C to obtain α-Mn2O3 nanorods, which were further subjected to various characterizations. The alpha manganese sesquioxide cubic bixbyite-type oxide formation was confirmed by the XRD studies. The surface morphology and elemental analysis were explored by SEM with EDX studies, respectively. High-resolution transmission electron microscopy HRTEM and SAED showed that the α-Mn2O3 nanorods were single crystalline and were grown along the C-axis of the crystal plane. The UV-visible spectrum indicated that the absorption was prominent in the ultraviolet region. In addition, PL spectrum result of α-Mn2O3 nanorods recommended possible photocatalytic applications. The photocatalyst ensures a new platform for the decolorization of dye molecules of the harmful cationic dyes like methylene blue and rhodamine B. Possible growth mechanism and photocatalytic dye degradation mechanism were proposed for synthesized α-Mn2O3 nanorods.

Original languageEnglish
Article number074001
JournalMaterials Research Express
Issue number7
Early online date3 Jul 2020
Publication statusPublished - Jul 2020


  • a-Mn2O3 nanorods
  • hydrothermal method
  • methylene blue
  • photocatalytic
  • rhodamaine B

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Metals and Alloys


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