Electrode Ce doped PbO2 used for treating waste water and its preparation method

Abstract

The invention relates to an electrode Ce doped PbO2 used for treating waste water and its preparation method. The electrode is a F-PbO2-CeO2 / TiO2-NTs / Ti electrode. The method for producing the electrode comprises that: obtaining a titania nano-tubes array (TiO2-NTs / Ti) matrix prepared by an anodization processing, doping rare earth Ce, preparing a doped-type F-PbO2-CeO2 / TiO2-NTs / Ti electrode by using an electrodeposition method. Compared with the prior art, the PbO2 electrode by the present invention has the advantages of high oxygen evolution potential, strong catalytic activity, stable electrode electrochemical performance and long service life. Compared with the traditional PbO2 electrode, the oxygen evolution potential of the electrode is higher than 2.4 V, and accelerated and strengthen life is more than 400 hours, the service life can reach about 40 years. The electrode has the advantages of simple preparation technology and low manufacturing cost, and can be effectively used for an electrochemical oxidation treatment of organic waste water which has high density and is difficult to degrade, the electrode also has a wide economic and social benefit.

Description

technical field

[0001] The invention belongs to the technical fields of material chemistry, environmental electrochemistry and pollutant control, and relates to a Ce-doped PbO with high oxygen evolution potential and long life for wastewater treatment 2 The electrode and its preparation method also relate to a technical method for applying the electrode to the electrocatalytic oxidation degradation of organic pollutants in wastewater. Background technique

[0002] Due to the advantages of strong oxidation ability, high controllability, mild reaction conditions, small footprint and environmental friendliness, the electrochemical oxidation method has a good application prospect for the treatment of toxic and harmful pollutants that are refractory to biodegradation. The anode material is undoubtedly the most critical factor determining the efficiency of electrochemical oxidation treatment. Therefore, the development of anode materials with good comprehensive performance has al...

Examples

Embodiment 1

[0024] A Ce-doped PbO with high oxygen evolution potential and long lifetime for wastewater treatment 2 The electrode and its preparation method are characterized in that, on the titanium dioxide nanotube array substrate prepared by anodization treatment, the doped F-PbO is prepared by electrodeposition method through the doping of rare earth Ce 2 -CeO 2 / TiO 2 -NTs / Ti electrode, which has high oxygen evolution potential, excellent electrocatalytic activity and long service life.

[0025] Using the direct electrochemical deposition method, the anodized TiO 2 The electrode is prepared by doping the rare earth element Ce on the nanotube array substrate. Described method specifically comprises the following steps:

[0026] (1) The surface of the pure metal titanium sheet is polished and polished with metallographic sandpaper, and the NH containing 0.8wt% 4 F, 2.0 wt% Na 2 SO 4 And in the solution of 10wt% polyethylene glycol (400), with titanium sheet as working electrode,...

Embodiment 2

[0033] A Ce-doped PbO with high oxygen evolution potential and long lifetime for wastewater treatment 2 The electrode and its preparation method are characterized in that, on the titanium dioxide nanotube array substrate prepared by anodization treatment, the doped F-PbO is prepared by electrodeposition method through the doping of rare earth Ce 2 -CeO 2 / TiO 2 -NTs / Ti electrode, which has high oxygen evolution potential, excellent electrocatalytic activity and long service life.

[0034] Using the direct electrochemical deposition method, the anodized TiO 2 The electrode is prepared by doping the rare earth element Ce on the nanotube array substrate. Described method specifically comprises the following steps:

[0035] (1) The surface of the pure metal titanium sheet is polished and polished with metallographic sandpaper, and the NH containing 0.5wt% 4 F, 1.6 wt% Na 2 SO 4 And in the solution of 20wt% polyethylene glycol (400), with titanium sheet as working electrode,...

Embodiment 3

[0040] A Ce-doped PbO with high oxygen evolution potential and long lifetime for wastewater treatment 2 The electrode and its preparation method are characterized in that, on the titanium dioxide nanotube array substrate prepared by anodization treatment, the doped F-PbO is prepared by electrodeposition method through the doping of rare earth Ce 2 -CeO 2 / TiO 2 -NTs / Ti electrode, which has high oxygen evolution potential, excellent electrocatalytic activity and long service life.

[0041] Using the direct electrochemical deposition method, the anodized TiO 2 The electrode is prepared by doping the rare earth element Ce on the nanotube array substrate. Described method specifically comprises the following steps:

[0042] (1) The surface of the pure metal titanium sheet is polished and polished with metallographic sandpaper, and the NH containing 1.0wt% 4 F, 1.6 wt% Na 2 SO 4 And in the solution of 50wt% polyethylene glycol (400), with titanium sheet as working electrode,...

technical field

[0001] The invention belongs to the technical fields of material chemistry, environmental electrochemistry and pollutant control, and relates to a Ce-doped PbO with high oxygen evolution potential and long life for wastewater treatment 2 The electrode and its preparation method also relate to a technical method for applying the electrode to the electrocatalytic oxidation degradation of organic pollutants in wastewater. Background technique

[0002] Due to the advantages of strong oxidation ability, high controllability, mild reaction conditions, small footprint and environmental friendliness, the electrochemical oxidation method has a good application prospect for the treatment of toxic and harmful pollutants that are refractory to biodegradation. The anode material is undoubtedly the most critical factor determining the efficiency of electrochemical oxidation treatment. Therefore, the development of anode materials with good comprehensive performance has al...

Examples

Embodiment 1

[0024] A Ce-doped PbO with high oxygen evolution potential and long lifetime for wastewater treatment 2 The electrode and its preparation method are characterized in that, on the titanium dioxide nanotube array substrate prepared by anodization treatment, the doped F-PbO is prepared by electrodeposition method through the doping of rare earth Ce 2 -CeO 2 / TiO 2 -NTs / Ti electrode, which has high oxygen evolution potential, excellent electrocatalytic activity and long service life.

[0025] Using the direct electrochemical deposition method, the anodized TiO 2 The electrode is prepared by doping the rare earth element Ce on the nanotube array substrate. Described method specifically comprises the following steps:

[0026] (1) The surface of the pure metal titanium sheet is polished and polished with metallographic sandpaper, and the NH containing 0.8wt% 4 F, 2.0 wt% Na 2 SO 4 And in the solution of 10wt% polyethylene glycol (400), with titanium sheet as working electrode,...

Embodiment 2

[0033] A Ce-doped PbO with high oxygen evolution potential and long lifetime for wastewater treatment 2 The electrode and its preparation method are characterized in that, on the titanium dioxide nanotube array substrate prepared by anodization treatment, the doped F-PbO is prepared by electrodeposition method through the doping of rare earth Ce 2 -CeO 2 / TiO 2 -NTs / Ti electrode, which has high oxygen evolution potential, excellent electrocatalytic activity and long service life.

[0034] Using the direct electrochemical deposition method, the anodized TiO 2 The electrode is prepared by doping the rare earth element Ce on the nanotube array substrate. Described method specifically comprises the following steps:

[0035] (1) The surface of the pure metal titanium sheet is polished and polished with metallographic sandpaper, and the NH containing 0.5wt% 4 F, 1.6 wt% Na 2 SO 4 And in the solution of 20wt% polyethylene glycol (400), with titanium sheet as working electrode,...

Embodiment 3

[0040] A Ce-doped PbO with high oxygen evolution potential and long lifetime for wastewater treatment 2 The electrode and its preparation method are characterized in that, on the titanium dioxide nanotube array substrate prepared by anodization treatment, the doped F-PbO is prepared by electrodeposition method through the doping of rare earth Ce 2 -CeO 2 / TiO 2 -NTs / Ti electrode, which has high oxygen evolution potential, excellent electrocatalytic activity and long service life.

[0041] Using the direct electrochemical deposition method, the anodized TiO 2 The electrode is prepared by doping the rare earth element Ce on the nanotube array substrate. Described method specifically comprises the following steps:

[0042] (1) The surface of the pure metal titanium sheet is polished and polished with metallographic sandpaper, and the NH containing 1.0wt% 4 F, 1.6 wt% Na 2 SO 4 And in the solution of 50wt% polyethylene glycol (400), with titanium sheet as working electrode,...

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