Electrochemical Deposition (ECD) of ZnO as the Photoanode in Dual‐Chamber Photocatalytic Fuel Cell (PFC) for Methyl Red Degradation. Issue 12 (27th March 2023)

• Record Type: Journal Article
• Authors: Niang, Antonio Choon Kiat anak; Liu, Jia Chee; Tay, Meng Guan
• Is Part Of: Advanced materials interfaces. Volume 10:Issue 12(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2023-03-27
• Subjects: dye -- electrochemical deposition -- photoanode -- ZnO; Materials science -- Periodicals; 620.11
• DOI: 10.1002/admi.202202366
• Languages: English
• ISSNs: 2196-7350

Abstract

Abstract: Photocatalytic fuel cell (PFC) is known to treat the organic‐based wastewater efficiently. The coating method of zinc(II) oxide (ZnO) as the photocatalyst on the zinc (Zn) plate of photoanode plays important role in maintaining the efficiency and power generation from PFC. In the present study, a new coating method of ZnO on the zinc plate is developed by using electrochemical deposition (ECD) and the removal efficiency as well as power generation are compared with typical ultrasonicate method. A dual‐chamber PFC is constructed with ZnO/Zn photoanode and graphite plate as the cathode to treat methyl red dye synthetic wastewater. The surface morphology of both coating methods of ZnO/Zn photoanode is observed using scanning electron microscope (SEM) before and after the treatments. The dual chamber PFC with ECD coating shows a faster complete degradation rate with higher power generation than ultrasonicate method. Although, both coating methods can reach to 100% degradation efficiency of methyl red dye, the maximum power output for ultrasonicate method is 134.67 mW cm −2 while for ECD is 285.30 mW cm −2 under optimum conditions. Abstract : Two different deposition methods of zinc(II) oxide onto zinc plate, namely electrochemical deposition (ECD) and ultrasonicate deposition, are studied, and used in the dual‐chamber photocatalytic fuel cell (PFC). The dye degradation and power generation from PFC are monitored and compared. The photoanode made by ECD method shows better removal efficiency and higher power generation compared to the one deposited using ultrasonicate.