A mini-review of recent progress in lead dioxide electrocatalyst for degradation of toxic organic pollutants. (January 2023)

• Record Type: Journal Article
• Authors: Rahmani, A.; Shabanloo, A.; Shabanloo, N.
• Is Part Of: Materials today chemistry. Volume 27(2023)
• Publication Date: 2023-01
• Subjects: Lead dioxide anode -- Modification strategies -- Co-doping -- PbO2 electrocatalyst -- Multi-metal oxide anode; Chemistry -- Periodicals; Materials -- Research -- Periodicals; Materials science -- Periodicals; Chemistry; Materials -- Research; Electronic journals; Periodicals; 660.282
• DOI: 10.1016/j.mtchem.2022.101311
• Languages: English
• ISSNs: 2468-5194

Abstract

Abstract: Lead dioxide (PbO2 ) electrocatalyst as a non-active anode have been extensively investigated in recent years with environmental objectives for the degradation of organic pollutants. Degradation of organics at the surface of the PbO2 anode by direct and indirect oxidation mechanisms proceeds to complete mineralization under optimal conditions. However, for conventional Ti/PbO2 anodes, low oxygen evolution potential (OEP), short service time, lead leakage, mass transfer limitation and, low active surface area are still the most important disadvantages that need much study. Development of PbO2 electrocatalysts with a three-dimensional structure, use of innovative intermediate layers, and doping of the main electrocatalyst active layer with the aim of increasing active sites are among the new strategies for upgrading PbO2 anodes. Focusing on articles published since 2021, this review presents current efforts by researchers to improve the electrocatalytic performance, stability and, environmental safety of PbO2 anodes for improved degradation of environmental pollutants. Graphical abstract: Image 1 Highlights: A review of recent advances in PbO2 anodes for the degradation of organic pollutants. Modification of PbO2 anodes in the substrate, intermediate layer and active layer. Improving electrocatalytic performance, increasing service time and reducing lead leakage in modified PbO2 anodes. Co-doping of PbO2 anodes with metal/non-metal composite. Titanium oxide-based compounds have received more attention as novel intermediate layers.