Fabrication and characterization of a porous gas-evolving anode constituted of lead dioxide microfibers electroformed on a carbon cloth substrate

Costa, Fabiano Ramos; Silva, Leonardo M. Da

doi:10.1016/j.electacta.2012.03.089

Cited by 18 publications

(3 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The oxide coating in the titanium-based coating electrode is easy to fall off during the electrolysis process, resulting in electrode failure. [10][11][12] In addition, researchers have conducted a large number of coated electrode studies on base materials such as stainless steel, aluminum, plastics, and ceramics. [11][12][13][14][15][16] However, in the long-term electrolysis process of metal-coated electrodes such as stainless steel and aluminum, new ecological oxygen atoms and acid liquids diffuse along the pores of the coating to the surface of the substrate to form an oxide insulating layer or the substrate is etched, thereby causing the anode to fail.…”

mentioning

confidence: 99%

Effect of Pb(NO₃)₂ on Preparation and Properties of CF/β-PbO₂ Electrodes for Zinc Electrowinning

Liu

Zhi-jun

2020

ECS J. Solid State Sci. Technol.

View full text Add to dashboard Cite

In this study, the β-PbO2 active layer was deposited on the surface of the carbon fiber cloth by electrodeposition. The CF/β-PbO2 electrode was investigated by scanning electron microscopy (SEM), anodic polarization curves, Tafel curves, and a four-probe method. It was found that a uniform and flattened dense β-PbO2 active layer is obtained when the concentration of Pb(NO3)2 is 150 g l−1. The deposition quality of the active layer of β-PbO2 particles in the carbon fiber is affected by the concentration of Pb(NO3)2, thereby affecting the interfacial bonding strength between the active layer and the carbon fiber. The weightlessness rate of the carbon fiber substrate electrode materials with Pb(NO3)2 concentration of 150 g l−1 are the smallest. The interface resistivity of the CF/β-PbO2 electrode sample with Pb(NO3)2 concentration of 150 g l−1 is 6.71 × 10−5 Ω·m and is smallest. The CF/β-PbO2 electrode prepared under the 150 g l−1 has the smallest oxygen evolution potential and is 2.335 V. When the concentration of Pb(NO3)2 is 150 g l−1, the prepared CF/β-PbO2 electrode has the largest corrosion potential (1.085 V) and the minimum corrosion current (2.074 × 10−4 A · cm−2).

show abstract

mentioning

confidence: 99%

Effect of Pb(NO₃)₂ on Preparation and Properties of CF/β-PbO₂ Electrodes for Zinc Electrowinning

Liu

Zhi-jun

2020

ECS J. Solid State Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…7,8 So far, the various types of electrodes, including graphite, 9 boron-doped diamond, 10 SnO 2 11 and PbO 2 1 electrodes, have been investigated extensively. The major shortcomings of the graphite, boron-doped diamond and SnO 2 electrodes are the low overpotential, 5 high cost 12 and short service lifetime 13 respectively, which restricts their industrial applications.…”

mentioning

confidence: 99%

Fabrication and Enhanced Electrocatalytic Activity of Three-Dimensional Sphere-Stacking PbO₂Coatings Based on TiO₂Nanotube Arrays Substrate for the Electrochemical Oxidation of Organic Pollutants

Wang

Mao

et al. 2017

J. Electrochem. Soc.

View full text Add to dashboard Cite

The three-dimensional sphere-stacking PbO 2 coatings based on one-dimensional TiO 2 -NTs/Ti substrate (3D-sphere PbO 2 ) were prepared without other three-dimensional templates, only by using a simple pulse electrodeposition method. The surface morphology, compositions and crystallographic structure of 3D-sphere PbO 2 electrode were investigated fully by using the field emission scanning electron (SEM), X-ray diffractometer (XRD) and energy dispersive X-ray spectroscopy (EDX), respectively. The comparative studies between 3D-sphere PbO 2 electrode and traditional flat PbO 2 electrode (flat-PbO 2 ) indicated that the 3D-sphere PbO 2 electrode with novel structure had smaller grain size. The electrochemical performances of the 3D-sphere PbO 2 electrode were carried out by using cyclic voltammograms (CV), linear sweep voltammograms (LSV), electrochemical impedance spectroscopy (EIS) and accelerated service life, respectively. The results show that the 3D-sphere PbO 2 electrode has larger electrochemical active surface area, higher oxygen evolution potential and lower charge transfer resistance, leading to it possesses better stable service life on process of degradation than that the flat-PbO 2 electrode. Furthermore, the 3D-sphere PbO 2 electrode showed the best performance on degradation of phenol in simulated wastewater by bulk electrolysis. The removal efficiency of phenol could reach about 96.5% after 120 min under the optimal current density (30 mA cm −2 ) at room temperature, which was higher than that by using the flat-PbO 2 electrode (73.1%). In addition, the reaction rate constant (k) of 3D-sphere PbO 2 electrode degrading phenol solution was 0.0277 min −1 which was 2.56 times larger than that of flat-PbO 2 electrode (0.0108 min −1 ). Summarily, the 3D-sphere electrode is a promising electrode in treating wastewater.

show abstract

“…It is stable at high potentials as well as in media with different pH values. 8,13,14 Despite the advantages of electrochemical technology, its main disadvantage concerns the high consumption of energy resulting from low current efficiencies, 7,15 which in turn are a direct consequence of mass transport restrictions caused by the low concentrations of organic compounds in effluents. [16][17][18] In applications involving the electrochemical removal of metal ions present in dilute aqueous solutions, this problem can be circumvented by the use of threedimensional cathodes.…”

Section: Introductionmentioning

confidence: 99%

Development of Three-Dimensional Electrodes of PbO₂Electrodeposited on Reticulated Vitreous Carbon for Organic Eletrooxidation

Farinos¹,

Zornitta²,

Ruotolo³

2016

Journal of the Brazilian Chemical Society

View full text Add to dashboard Cite

The application of electrochemical technology for the degradation of organic pollutants often faces two main problems, related to the anode material and mass transport limitations. Although PbO 2 electrode is inexpensive and provides satisfactory electrooxidation kinetics, in the form of plane electrodes it is unable to resolve the mass transfer problem that arises at low concentrations of organics. In this work, an electrochemical flow reactor was developed for the preparation of three-dimensional electrodes consisting of PbO 2 films electrodeposited onto reticulated vitreous carbon. The electrodes were characterized in terms of the substrate coating, morphology, structure, and electrocatalytic activity in the decoloration reaction of Reactive Blue 19 dye. The results showed that it was possible to deposit a uniform film of PbO 2 on the surface of the substrate after optimization of the current density and deposition time (0.7 mA cm -2 for 30 min). Comparison of the plane and three-dimensional electrodes revealed that the turbulence generated by the porous matrix significantly accelerated the dye decoloration kinetics, increasing 3.3-fold the first order kinetic constant (from 0.010 min -1 for VC/PbO 2 to 0.033 min -1 for RVC/PbO 2 ).

show abstract

Fabrication and characterization of a porous gas-evolving anode constituted of lead dioxide microfibers electroformed on a carbon cloth substrate

Cited by 18 publications

References 51 publications

Effect of Pb(NO₃)₂ on Preparation and Properties of CF/β-PbO₂ Electrodes for Zinc Electrowinning

Effect of Pb(NO₃)₂ on Preparation and Properties of CF/β-PbO₂ Electrodes for Zinc Electrowinning

Fabrication and Enhanced Electrocatalytic Activity of Three-Dimensional Sphere-Stacking PbO₂Coatings Based on TiO₂Nanotube Arrays Substrate for the Electrochemical Oxidation of Organic Pollutants

Development of Three-Dimensional Electrodes of PbO₂Electrodeposited on Reticulated Vitreous Carbon for Organic Eletrooxidation

Contact Info

Product

Resources

About

Fabrication and characterization of a porous gas-evolving anode constituted of lead dioxide microfibers electroformed on a carbon cloth substrate

Cited by 18 publications

References 51 publications

Effect of Pb(NO3)2 on Preparation and Properties of CF/β-PbO2 Electrodes for Zinc Electrowinning

Effect of Pb(NO3)2 on Preparation and Properties of CF/β-PbO2 Electrodes for Zinc Electrowinning

Fabrication and Enhanced Electrocatalytic Activity of Three-Dimensional Sphere-Stacking PbO2Coatings Based on TiO2Nanotube Arrays Substrate for the Electrochemical Oxidation of Organic Pollutants

Development of Three-Dimensional Electrodes of PbO2Electrodeposited on Reticulated Vitreous Carbon for Organic Eletrooxidation

Contact Info

Product

Resources

About

Effect of Pb(NO₃)₂ on Preparation and Properties of CF/β-PbO₂ Electrodes for Zinc Electrowinning

Effect of Pb(NO₃)₂ on Preparation and Properties of CF/β-PbO₂ Electrodes for Zinc Electrowinning

Fabrication and Enhanced Electrocatalytic Activity of Three-Dimensional Sphere-Stacking PbO₂Coatings Based on TiO₂Nanotube Arrays Substrate for the Electrochemical Oxidation of Organic Pollutants

Development of Three-Dimensional Electrodes of PbO₂Electrodeposited on Reticulated Vitreous Carbon for Organic Eletrooxidation