Fabrication and photoelectrocatalytic performance of C3N4-modified Ti/PbO2 anode with surface hydrophobicity

• Published in: Journal of solid state electrochemistry Vol. 24; no. 7; pp. 1577 - 1585
• Main Authors: Li, Wenfeng, Lyu, Jiahui, Zhou, Kun, Ma, Hongchao, Ma, Chun, Dong, Xiaoli, Fu, Yinghuan
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 2020; Springer Nature B.V
• Subjects: Analytical Chemistry; Anodes; Carbon nitride; Carrier density; Characterization and Evaluation of Materials; Chemical evolution; Chemistry; Chemistry and Materials Science; Condensed Matter Physics; Degradation; Electrochemistry; Electrodes; Energy Storage; Hydrophobicity; Hydroxyl radicals; Lead oxides; Morphology; Original Paper; Photoelectricity; Physical Chemistry; Wastewater treatment; electrode; Hydrophobic/hydrophilic characteristics; Photoelectrochemical oxidation; g-C; Ti/PbO; N
• ISSN: 1432-8488; 1433-0768
• DOI: 10.1007/s10008-020-04657-4

Reasonable hydrophobic anode is deemed to be a promising electrode for photoelectrocatalytic degradation of wastewater. In this study, the C 3 N 4 -modified Ti/PbO 2 electrode with tunable hydrophobic characteristics is fabricated by a facile electrodeposition process. It is found that the introduction of C 3 N 4 into the PbO 2 films changed the morphology, surface hydrophilicity, and hydrophobicity of the electrode, which promotes the photoelectrochemical active areas, generating efficiency of hydroxyl radicals. In addition, introducing C 3 N 4 into PbO 2 coating can enhance oxygen evolution potential and carrier density of PbO 2 . Photoelectrocatalytic degradation experiments show that the addition of C 3 N 4 can further improve the catalytic performance of PbO 2 and there exists a significant photoelectric synergism in photoelectrocatalytic process. These results demonstrate that the combination of reasonable surface hydrophobic characteristics and photoelectrocatalytic is a prospective approach for wastewater treatment.