Electrodeposition of Co-doped lead dioxide and its physicochemical properties

2002 ◽  
Vol 527 (1-2) ◽  
pp. 56-64 ◽  
Author(s):  
A.B Velichenko ◽  
R Amadelli ◽  
E.A Baranova ◽  
D.V Girenko ◽  
F.I Danilov
Keyword(s):  
Physicochemical Properties ◽  
Lead Dioxide ◽  
Co Doped

Influence of Li+ ions on the physicochemical properties of nanocrystalline calcium–strontium hydroxyapatite doped with Eu3+ ions

2019 ◽  
Vol 43 (37) ◽  
pp. 14908-14916 ◽  
Author(s):  
Paulina Sobierajska ◽  
Rafal J. Wiglusz
Keyword(s):  
Physicochemical Properties ◽  
Strontium Hydroxyapatite ◽  
Co Doped

In the present study, nanocrystalline Ca–Sr hydroxyapatites structurally modified with Li+ ions as well as co-doped with Eu3+ ions were prepared as biomaterials showing both regenerative and therapeutic functions.

Electrosynthesis and physicochemical properties of Fe-doped lead dioxide electrocatalysts

2000 ◽  
Vol 45 (25-26) ◽  
pp. 4341-4350 ◽  
Author(s):  
A.B Velichenko ◽  
R Amadelli ◽  
G.L Zucchini ◽  
D.V Girenko ◽  
F.I Danilov
Keyword(s):  
Physicochemical Properties ◽  
Lead Dioxide

scholarly journals Modified lead dioxide for organic wastewater treatment: Physicochemical properties and electrocatalytic activity

2019 ◽  
Vol 84 (2) ◽  
pp. 187-198 ◽  
Author(s):  
Olesia Shmychkova ◽  
Tatiana Luk’yanenko ◽  
Larisa Dmirtikova ◽  
Alexander Velichenko
Keyword(s):  
Wastewater Treatment ◽  
Physicochemical Properties ◽  
Electrochemical Oxidation ◽  
Oxygen Evolution ◽  
Electrocatalytic Activity ◽  
Lead Dioxide ◽  
Chemical Properties ◽  
Destruction Rate ◽  
Physico Chemical ◽  
Pbo2 Anode

An investigation is reported on lead dioxide electrodeposition from methanesulfonate electrolytes additionally containing Ni2+ ions. It is shown that lead dioxide electrodes micromodified by nickel have different physico-chemical properties vs. nonmodified PbO2-anodes that are formed during the deposition. Electrocatalytical reactivity of electrodes involved in comparison to both the oxygen evolution, as well as to the electrooxidation of 2,4- dichlorophenoxyacetic (2,4-D) acid is investigated. Processes of electrochemical oxidation of 2,4-D on various materials occur qualitatively with the same mechanism and differ only in the rate. It is shown that the Ni-PbO2-anode possesses the highest electrocatalytic activity: the destruction rate of 2,4-D on it increases in 1.5 times in comparison with nonmodified lead dioxide. The COD of a 0.4 mM solution of 2,4-D, determined by the dichromate method, is 90.0 mg dm-3 which is 94 % of the theoretical value.

scholarly journals Degradation Characteristics of Cationic Red X-GRL with Gd, La Co-doped PbO2 Electrode

2015 ◽  
Vol 18 (3) ◽  
pp. 145-148
Author(s):  
Weidong Li ◽  
Huayun Yang ◽  
Qi Liu
Keyword(s):  
Thermal Decomposition ◽  
Rare Earth ◽  
Lead Dioxide ◽  
Molar Ratio ◽  
Deposition Technique ◽  
Electro Deposition ◽  
Toc Removal ◽  
Pbo2 Electrode ◽  
Simulated Wastewater ◽  
Co Doped

To enhance the degradation efficiency as purpose, the Gd2O3 and La2O3 were doped in the lead dioxide electrode by the thermal decomposition and electro-deposition technique for the treatment of simulated wastewater containing cationic red X-GRL (X-GRL). The optimized molar ratio of Pb:Gd:La of 200mol:3mol:1mol, and the optimal degradation conditions of current density 50 mA/cm2, 0.1 mol/L Na2SO4, initial quality concentration of X-GRL 100 mg/L, after 2 h degradation, the X-GRL and TOC removal of reached 97.81% and 51.28%, respectively. The efficiency of combustion (ηc) of rare earth co-doped electrode was increased by 0.257 than that of un-doped electrode.

Design of Mn and Zr incorporated Ag2O nanoparticles and their enhanced photocatalytic activity driven by visible light irradiation for degradation of rose bengal dye

2021 ◽  
Vol 45 (4) ◽  
pp. 1876-1886
Author(s):  
A. Subalakshmi ◽  
B. Kavitha ◽  
A. Karthika ◽  
S. Nikhil ◽  
N. Srinivasan ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Physicochemical Properties ◽  
Silver Oxide ◽  
Oxide Nanoparticles ◽  
Rose Bengal Dye ◽  
Silver Oxide Nanoparticles ◽  
Wet Chemical ◽  
Ag2o Nanoparticles ◽  
Chemical Strategy ◽  
Co Doped

Mn, Zr co-doped Ag2O nanoparticles were blended through a wet chemical strategy, and the physicochemical properties of doped and co-doped silver oxide nanoparticles were characterized.

Preparation and characterisation of vanadium pentoxide supported rhodium catalyst

1988 ◽  
Vol 46 ◽  
pp. 946-947
Author(s):  
A. Legrouri
Keyword(s):  
Aqueous Solution ◽  
Thermal Decomposition ◽  
Physicochemical Properties ◽  
Surface Area ◽  
Vanadium Pentoxide ◽  
High Purity ◽  
Gas Adsorption ◽  
Rhodium Catalyst ◽  
Optical Methods ◽  
Reducible Oxides

The industrial importance of metal catalysts supported on reducible oxides has stimulated considerable interest during the last few years. This presentation reports on the study of the physicochemical properties of metallic rhodium supported on vanadium pentoxide (Rh/V2O5). Electron optical methods, in conjunction with other techniques, were used to characterise the catalyst before its use in the hydrogenolysis of butane; a reaction for which Rh metal is known to be among the most active catalysts.V2O5 powder was prepared by thermal decomposition of high purity ammonium metavanadate in air at 400 °C for 2 hours. Previous studies of the microstructure of this compound, by HREM, SEM and gas adsorption, showed it to be non— porous with a very low surface area of 6m2/g3. The metal loading of the catalyst used was lwt%Rh on V2Q5. It was prepared by wet impregnating the support with an aqueous solution of RhCI3.3H2O.

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