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Mn 2+ Doped Cobalt Oxide and Its Composite with Carbon Nanotubes for Adsorption-Assisted Photocatalytic Applications

Author

Listed:
  • Muhammad Fida

    (Department of Chemistry, COMSATS University Islamabad (CUI), Abbottabad Campus, Khyber Pakhtunkhwa 22010, Pakistan
    These authors contributed equally to this work.)

  • Shahid Iqbal

    (Department of Chemistry, School of Natural Sciences (SNS), National University of Science and Technology (NUST), H-12, Islamabad 46000, Pakistan)

  • Mazloom Shah

    (Department of Chemistry, Abbottabad University of Science and Technology, Abbottabad 22010, Pakistan)

  • Tanzeela Fazal

    (Department of Chemistry, Abbottabad University of Science and Technology, Abbottabad 22010, Pakistan
    These authors contributed equally to this work.)

  • Bushra Ismail

    (Department of Chemistry, COMSATS University Islamabad (CUI), Abbottabad Campus, Khyber Pakhtunkhwa 22010, Pakistan)

  • Hafiz ur Rehman

    (Department of Chemistry, Quaid-i-Azam University, Islamabad 15320, Pakistan)

  • Foziah F. Al-Fawzan

    (Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia)

  • Eslam B. Elkaeed

    (Department of Pharmaceutical Sciences, College of Pharmacy, AlMaarefa University, Riyadh 13713, Saudi Arabia)

  • Rami Adel Pashameah

    (Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah 24230, Saudi Arabia)

  • Eman Alzahrani

    (Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia)

  • Abd-ElAziem Farouk

    (Department of Biotechnology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia)

Abstract

In this study, cobalt oxide (Co 3 O 4 ), Mn-doped Co 3 O 4 (MDCO), and Mn-doped Co 3 O 4 -functionalized carbon nanotube (MDCO-CNTs) were synthesized via the co-precipitation method using cobalt nitrate and manganese nitrate as a cobalt and manganese precursor, respectively. Synthesized materials were assessed using different characterization techniques like scanning electron microscopy, X-ray diffraction, and UV-visible spectroscopy. Congo red in an aqueous solution was adopted as the model dye to estimate the adsorption-assisted photocatalytic efficiency of the synthesized materials. The samples studied for adsorpsstion-assisted photocatalysis were found to be highly effective and among all the samples, the best removal performance (80%) was obtained by treating the MDCO-CNTs composite for 50 min at 50 °C. Mathematical modeling shows that all of the samples followed a pseudo-second-order kinetic model and data best fitted to a Langmuir isotherm, implying that the process involved in the removal of Congo red dye is chemisorption.

Suggested Citation

  • Muhammad Fida & Shahid Iqbal & Mazloom Shah & Tanzeela Fazal & Bushra Ismail & Hafiz ur Rehman & Foziah F. Al-Fawzan & Eslam B. Elkaeed & Rami Adel Pashameah & Eman Alzahrani & Abd-ElAziem Farouk, 2022. "Mn 2+ Doped Cobalt Oxide and Its Composite with Carbon Nanotubes for Adsorption-Assisted Photocatalytic Applications," Sustainability, MDPI, vol. 14(24), pages 1-17, December.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:24:p:16932-:d:1006220
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