Investigation on electrochemical properties of cerium doped lead dioxide anode and application for elimination of nitrophenol

Fabrication of cerium-doped lead dioxide anode with improved electrocatalytic activity and its application for removal of Rhodamine B

“…b-PbO 2 exhibits higher electrocatalytic activity between the two major allotropic forms of PbO 2 (a-PbO 2 and b-PbO 2 ). For TiO 2 -NTs/Ce-PbO 2 , no peaks corresponding to CeO 2 were detected (in agreement with the result reported by Liu et al [15]). But the preferred crystalline orientation of the modified crystallites changes since the intensities of the peaks at 25.4°, 31.9°a nd 62.4°decrease, while those at 36.2°, 58.8°and 74.2°increase as cerium incorporating with PbO 2 .…”

“…However, to meet the requirements of decontamination of dyeing effluents, more efforts should be made for improving the electrochemical stability and electrocatalytic activity of PbO 2 . Studies have verified that the electrocatalytic activity and stability of PbO 2 electrodes can be significantly improved via incorporation of foreign ions, such as Bi 3+ , Ce 3+ , Ru 3+ , Ag + , Co 2+ and Fe 3+ , into PbO 2 [12][13][14][15]. Cerium (Ce) is an attractive rare earth dopant with high thermal stability and diffusivity.…”

Investigation on electro-catalytic oxidation properties of carbon nanotube–Ce-modified PbO2 electrode and its application for degradation of m-nitrophenol

“…Cerium may play the role of electrocatalytic active centers, and strengthen electron transfer on the interface of the solution and the electrode, which is ascribed to its unique outer electronic structure (Liu et al, 2011). The electrons at the 4f orbital of Ce are not fully occupied, which could occupy the 5d orbital and become valence electrons (Can˜izares et al, 2002).…”

Preparation and characterization of Ce and PVP co-doped PbO2 electrode for waste water treatment

“…In addition, rare earth oxides, as powerful oxidants, can easily catalyze organics compounds [23]. Recently, it has been reported that rare earth oxides were doped into PbO 2 anodes to improve their electrocatalytic capacities [24][25][26][27][28][29][30][31]. Based on these reports, we can conclude that the reasonable modification is beneficial for the electrocatalytic oxidation activity and service lifetime of PbO 2 electrode.…”

“…The following equation calculated and expressed the specific energy consumption (E) of each PbO 2 anode [30].…”