@article {WANG2023109513,
	title = {Fabrication of a novel PbO2 electrode with rare earth elements doping for p-nitrophenol degradation},
	journal = {Journal of Environmental Chemical Engineering},
	volume = {11},
	number = {2},
	year = {2023},
	pages = {109513},
	abstract = {A novel PbO2 electrode modified with rare earth elements (La, Ce, Gd and Er) doping (named as Re-PbO2) was prepared by electrodeposition in the present study. The micro-morphology and crystal structure of Re-PbO2 were characterized by scanning electronic microscopy (SEM), energy dispersive spectroscope (EDS), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), respectively. Their electrochemical properties were determined by linear sweep voltammetry (LSV), cyclic voltammetry (CV), accelerated life test and hydroxyl radicals ({\textbullet}OH) formation analysis. Electrochemical oxidation of p-nitrophenol (p-NP) by Re-PbO2 compared with un-doped PbO2 has been investigated and the degradation rate followed the order of Er-PbO2 \&gt;~Gd-PbO2 \&gt;~La-PbO2 \&gt;~Ce-PbO2 \&gt;~PbO2. Especially for Er-PbO2, the pseudo-first order kinetic for p-NP (kp-NP) degradation was 0.41, which was only 0.19 for un-doped PbO2. Rare earths elements doping improved the oxidation ability of Re-PbO2 mainly through reducing grain size, increasing oxygen evolution potential, enlarging electrochemical active surface area and enhancing {\textbullet}OH formation ability. In addition, existing formation of oxygen species on PbO2 electrode surface was investigated by XPS. For Re-PbO2, percentage of lattice oxygen species (Oads) were higher than that on the un-doped one. These results demonstrated that rare earth elements can enhance the oxidation ability of PbO2 electrode significantly.},
	keywords = {Electrochemical oxidation, hydroxyl radicals, PbO Electrode, Rare Earth Elements},
	issn = {2213-3437},
	doi = {https://doi.org/10.1016/j.jece.2023.109513},
	url = {https://www.sciencedirect.com/science/article/pii/S221334372300252X},
	author = {Ke Wang and Xing, Xuan and Liu, Wen and Yi Jiang and Hongna Li and Yue Lu and Chen, Huiying and Huatang Ren}
}
