Preparation and characterization of PbO2 electrodes doped with different rare earth oxides

Kong, Jiangtao; Shi, Shaoyuan; Kong, Lingyu; Zhu, Xiuping; Ni, Jinren

doi:10.1016/j.electacta.2007.09.003

Cited by 146 publications

(66 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The results showed that doping species could change the characteristics of PbO 2 electrode, including catalytic activity and oxygen evolution potential. Recently, there were many studies on doping of rare earth, such as La 2 O 3 and Er 2 O 3 [18,19], which can distract internal stress of PbO 2 to enhance the stability of electrode and achieve high removal efficiency [20]. Cerium and its oxide have been widely used in oxidation catalyst as they have strong oxidation ability [21].…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic activity of Ce-PbO2/C anode for acid red B reduction in aqueous solution

Yang

2015

J Solid State Electrochem

View full text Add to dashboard Cite

Graphite-lead dioxide electrodes doped with rare earth Cerium (Ce-PbO 2 /C electrodes) were prepared by electrodeposition. The scanning electron microscope results showed that the microstructure and crystal orientation of electrode surface were changed by Cerium doping. CeO 2 was detected from modified electrodes by X-ray diffraction analysis. The cyclic voltammetry spectra indicated that the oxidation peak potential of cerium-doped electrode was smaller than pure PbO 2 electrode. Effects of the novel electrode on acid red B degradation were evaluated systematically under different parameters, including applied voltage, initial pH, supporting electrolyte concentration, electrode spacing, and influent concentration. The results indicated that chemical oxygen demand, decolorization, and ammonia nitrogen removal rate of Ce-PbO 2 /C electrodes reached 90.17, 99.98, and 97.23 %, respectively, after 60-min electrolysis at initial 1000 mg L −1 acid red B concentration. The possible mechanism of acid red B degradation over Ce-PbO 2 /C electrodes was monitored by gas chromatography-mass spectrometer.

show abstract

Section: Introductionmentioning

confidence: 99%

Electrocatalytic activity of Ce-PbO2/C anode for acid red B reduction in aqueous solution

Yang

2015

J Solid State Electrochem

View full text Add to dashboard Cite

show abstract

“…In addition, preparation and properties of the rare earth doped lead dioxide were seldom reported. Kong et al (2007) reported that the crystal structure of the PbO 2 electrodes was influenced by doping with different rare earth oxides. The presence of Er 2 O 3 and La 2 O 3 in the PbO 2 films could enhance the direct anodic oxidation, which was helpful to mineralize organic wastes.…”

Section: The Preparation Of Lead Dioxidementioning

confidence: 99%

Anodic Materials with High Energy Efficiency for Electrochemical Oxidation of Toxic Organics in Waste Water

Wang¹,

Chen²,

Guo³

et al. 2012

Industrial Waste

View full text Add to dashboard Cite

“…In recent years, researchers have proposed vast novel modification techniques to improve electrode performance by changing the matrix type [7] , preparing methods [8,9] and preparing conditions [10,11] . Specially, doping various rare earth elements on the electrode in the preparation is an important modification method [12,13] . Rare earth elements have unique physical and chemical properties owing to the special 4f orbital junction in the periodic table [4] .…”

mentioning

confidence: 99%

Preparation and electrochemical application of praseodymium modified TiO2-NTs/SnO2-Sb anode by cyclic voltammetry method

Wang

Chen

Zhu

et al. 2016

Trans. Tianjin Univ.

View full text Add to dashboard Cite

Abstract：A Pr-doped TiO 2 -NTs/SnO 2 -Sb electrode was prepared by a simple method, cyclic voltammetry(CV).The methyl orange(MO)aqueous solution was selected as a simulated wastewater. The ordered microstructural TiO 2 -NTs substrate was synthesized by an electrochemical method to obtain large specific surface area and high space utilization. The phase structure, electrode surface morphology and electrochemical properties of electrodes were characterized by XRD, SEM and electrochemical technology, respectively. The results showed that praseodymium oxide was successfully doped into the SnO 2 -Sb film by CV method. Due to the doped Pr, the oxygen evolution potential increased from 2.25 V to 2.40 V. The degradation of MO was investigated by UV-vis. The C t /C 0 (φ) was studied as a function to obtain the optimal parameters, such as the amount of doped Pr, current density and initial dye concentration. In addition, the degradation process followed pseudo-first-order reaction kinetics and the rate constant was 0.099 3 min -1. The result indicated that the introduction of Pr reduced the formation of oxygen vacancies or enhanced the formation of adsorbed hydroxyl radical groups on the surface, thus leading to better activity and stability.

show abstract

Preparation and characterization of PbO2 electrodes doped with different rare earth oxides

Cited by 146 publications

References 38 publications

Electrocatalytic activity of Ce-PbO2/C anode for acid red B reduction in aqueous solution

Electrocatalytic activity of Ce-PbO2/C anode for acid red B reduction in aqueous solution

Anodic Materials with High Energy Efficiency for Electrochemical Oxidation of Toxic Organics in Waste Water

Preparation and electrochemical application of praseodymium modified TiO2-NTs/SnO2-Sb anode by cyclic voltammetry method

Contact Info

Product

Resources

About