Graphite Oxide and Graphite Nanotubes with Rutile –TiO2 for Combative Studies in Mineralization Process of Methyl Orange Dyes

Mineralization Process of Dyes

Authors

  • Farqad Talib Ahmed Chemistry Department, College of Education for Pure Science, Diyala University, Iraq
  • Ahmed Abdul Ismail Chemistry Department, College of Education for Pure Science, Diyala University, Iraq
  • Hanaa H. Hussein Department of Chemistry, College of Science, Mustansiriyah University, Baghdad, Iraq
  • Zena M. Jassem Grain Board - Quality Control Department, Ministry of Trade, Iraq
  • Sajid M. Lateef Grain Board - Quality Control Department, Ministry of Trade, Iraq also affiliated with College of Science, Al-Ameen University, Iraq eCollege of Education for Pure Science (Ibn Al-Haitham), Baghdad University, Iraq

DOI:

https://doi.org/10.52763/PJSIR.PHYS.SCI.69.1.2026.1.7

Keywords:

rutile, adsorption, di-colourization, photo reaction, MWCNT, GO

Abstract

Titanium dioxide TiO2 (rutile) was impregnated with graphite and multiwall carbon nanotubes after being functionalized with H2O2/H2SO4. The binary composites were TiO2/10% GO and TiO2/10% MWCNT, which were characterized using X-ray diffraction, Raman spectroscopy and surface area BET. The pristine and modified rutile TiO2 activates were tested with methyl orange dye removal, which accrued by two steps of adsorption and then photo (UV-A light) di-colourization. The kinetic studies showed that the first process follows the second-order reaction while the second process is behaving as a first-order reaction. The mechanism of reaction shows that carbon materials succeeded in enhancing the activities of the useful surface when creating more active sites to adsorb the MO molecules and then enhanced the process of transferring the electrons in photodecolourization.

 

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Published

2026-03-10

Issue

Vol. 69 No. 1 (2026): Pakistan Journal of Scientific and Industrial Research Series A: Physical Sciences

Section

Articles