Effect of Sulfur and Nitrogen co-Doped Graphene Quantum Dots on Co3O4 Nanoparticles as Solar Induced Photocatalyst
نویسندگان
1 College of science for women, University of Babylon, Iraq
2 Chemistry Department, College of Science Diyala University, Iraq
3 National Research Ogarev Mordovia State University, Republic of Mordovia, Saransk, Russia
4 Department of Pharmacology, Saveetha Dental College and Hospital, Saveetha institute of medical and Technical Sciences, Saveetha University, Chennai, India
5 Chemistry Department, College of Education for Pure Sciences (Ibn Al – Haitham), University of Baghdad , Baghdad , Iraq
6 College of science for women, University of Babylon, Iraq
7 Kazan State Power Engineering University, Kazan, Russia
doi
10.22052/JNS.2021.02.002چکیده
The photocatalyst process is considered the most promising method for the removal of water contamination. For excellent chemical and structural properties of Co3O4 nanoparticles, various Co3O4-based nanostructures can be applied as a photocatalyst. In this work, carbon quantum dots is prepared via an eco-friendly process and linked to Co3O4 effectively. X-ray diffraction pattern (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-visible absorption spectroscopy and Fourier transform infrared spectroscopy (FT-IR). The photocatalyst process reveals that prepared nanocomposites can be degraded methylene blue under solar irradiation strongly. Results showed that methylene blue and methyl orange are degraded via 64% and 56% efficiency after 70 minutes of irradiation under visible irradiation using Co3O4 nanoparticles respectively. The photocatalytic performance of Co3O4 nanoparticles was improved via linking SN-GQDs and formation SN-GQDs/ Co3O4 nanocomposites. UV-Vis analysis revealed that charge transfer from Co3O4 to SN-GQDs and prevent charge recombination in Co3O4 which leads to better photocatalytic efficiency. This study introduces SN-GQDs/ Co3O4 nanocomposites as a novel and green photocatalyst agent.
