Catalytic degradation of methylene blue using a newly engineered composite and its electrochemical performance. (September 2020)

• Record Type: Journal Article
• Authors: Kiran, Ayesha; Ramzan, Muhammad; Faheem, Muhammad; Hussain, Shabbir; Imran, Muhammad
• Is Part Of: Case studies in chemical and environmental engineering. Volume 2 (2020)
• Publication Date: 2020-09
• Subjects: Catalytic degradation -- Hazardous dyes -- Metalloprphyrins -- Reduced graphene -- Multiwalled-carbon nanotubes; Chemical engineering -- Periodicals; Environmental engineering -- Periodicals; Environmental chemistry -- Periodicals; 628.05
• DOI: 10.1016/j.cscee.2020.100039
• Languages: English
• ISSNs: 2666-0164

Abstract

Abstract: Herein, we reported the development of tetramethoxyphenylporphyrin (CoTPP)/reduced graphene (rGO)/multiwalled carbon nanotubes (MWCNTs) composite via an ultrasonic treatment. The engineered composite was characterized by different analytical techniques like scanning electron microscopy (SEM), energy dispersive X-ray (EDX), ultraviolet–visible spectroscopy (UV–Vis) and Fourier transform infrared spectroscopy (FT-IR). The synthesized composite was tested for the catalytic degradation of methylene blue (MB) under solar irradiation and the electrochemical performance of the CoTPP/rGO/MWCNTs was also investigated in alkaline media by using cyclic voltammetry (CV). The photodegradation efficiency of prepared CoTPP/rGO/MWCNTs composite is 92% degradation of MB in water within 60 ​min irradiation. The results of the cyclic voltammogram showed that the onset potential value was -0.4 ​V while peak potential value of CoTPP-rGO/CNTs was -0.59 ​V. The high onset peak potential values and the current values of the CoTPP/rGO/MWCNTs make it a promising candidate as a catalyst for ORR.