• FETHI JOMNI

      Articles written in Bulletin of Materials Science

    • Investigation of physicochemical and electrical properties of TiO$_2$ nanotubes/graphene oxide nanocomposite

      MARWA HAMANDI MOHAMED TRIKI JORDI LLORCA FETHI JOMNI NUHAD AALOMAIR HAFEDH KOCHKAR

      More Details Abstract Fulltext PDF

      Graphene oxide (GO)-based nanocomposites have received a great attention due to their emerging applications. Here, we thoroughly examined the structural, electronic and surface properties of GO/TiO$_2$ nanotubes nanocomposite. The nanocomposite is prepared by simple impregnation of TiO$_2$ nanotubes (HNT400) with GO dispersion. GO is elaborated byan improved Hummer’s method, while HNT400 is obtained using alkaline hydrothermal treatment of TiO$_2$ P25, followed by calcination at 400$^{\circ}$C. XRD and Raman analyses show that GO nanosheets do not change the structural properties of TiO$_2$ nanotubes. TEM analysis confirms the formation of GO nanosheets assembled to TiO$_2$ nanotubes. XPS and EPR results confirm the electron transfer between GO and TiO$_2$ nanotubes. PL analysis reveals that GO inhibits the recombination of photogenerated electron–hole pairs in the nanocomposite. The ac conductivity measurements suggest the presence of grain and grain boundary effects in GO/HNT400.

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.