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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/046/0019

    • Keywords

       

      GO NSs-decorated NiTiO$_3$ NF composite; photoelectrochemical analysis; MB dye degradation.

    • Abstract

       

      The graphene oxide nanosheets (GO NSs) and nickel titanate nanofibres (NiTiO$_3$ NFs) were synthesized by modified Hummers and electrospinning technique. The NiTiO$_3$ NFs surface was decorated using different weight percentages of GO NSs by the process of sonication. Scanning electron microscopy and high-resolution transmission electron microscopy depicted the morphology and emphasize that GO NSs were decorated on the surface of the NiTiO$_3$ NFs. Photoelectrochemical studies revealed that the inclusion of GO improved the absorption capability of NFs by hindering the photoexcited charge carriers recombination effectively. Photocatalytic activity was obtained by degrading the methylene blue (MB) dye solution. The results obtained emphasize that the pure NiTiO$_3$ NFs degraded 44% of MB dye under visible-light irradiation, while 3% GO NSs-decorated NiTiO$_3$ NF composite degraded almost 92% under visible-light in 180 min. The degradation of pure NiTiO$_3$ and GO NSs-decorated NiTiO$_3$ NF composite was found to be constant and obeyed first-order kinetics. The GO NSs-decorated NiTiO$_3$ NF composite showcased improved photocatalytic activity when compared to pure NiTiO$_3$ NFs. In addition, rate constant determined the efficiency of dye getting degraded.

    • Graphical Abstract

       

    • Author Affiliations

       

      SUGUNA SUBRAMANIAN1 SASIKALA GANAPATHY1 SANGEETHA DHARMALINGAM2 RAMASAMY JAYAVEL1 3

      1. Crystal Growth Centre, Anna University, Chennai 600 025, India
      2. Department of Mechanical Engineering, Anna University, Chennai 600 025, India
      3. Centre for Nanoscience and Technology, Anna University, Chennai 600 025, India

    • Dates

       
      Published
      25 January 2023
      Manuscript received
      19 July 2022
      Accepted
      16 November 2022
      Final version published online
      25 January 2023

  • Bulletin of Materials Science | News

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    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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