Nanostructured Platinum/Iron Phosphate Thin-Film Electrodes for Methanol Oxidation

2006 ◽  
Vol 9 (10) ◽  
pp. E27 ◽  
Author(s):  
Byungjoo Lee ◽  
Chunjoong Kim ◽  
Yejun Park ◽  
Tae-Gon Kim ◽  
Byungwoo Park
Keyword(s):  
Thin Film ◽  
Methanol Oxidation ◽  
Iron Phosphate ◽  
Thin Film Electrodes

scholarly journals The effects of ruthenium-oxidation states on Ru dissolution in PtRu thin-film electrodes

2009 ◽  
Vol 24 (9) ◽  
pp. 2762-2766 ◽  
Author(s):  
Yejun Park ◽  
Byungjoo Lee ◽  
Chunjoong Kim ◽  
Yuhong Oh ◽  
Seunghoon Nam ◽  
...  
Keyword(s):  
Thin Film ◽  
Methanol Oxidation ◽  
Oxidation States ◽  
Hydrogen Electrode ◽  
Oxidation Activity ◽  
Oxidation Treatment ◽  
Ruthenium Oxidation ◽  
Normal Hydrogen ◽  
Thin Film Electrodes ◽  
Anodic Oxidation Treatment

The effects of ruthenium (Ru)-oxidation states were investigated on Ru dissolution from PtRu thin-film electrodes, with the 200 cycles between 0.4 and 1.05 V (versus normal hydrogen electrode). The Ru-oxidation states of the PtRu thin films were systematically modified by an anodic (oxidation) treatment. The anodic-treated PtRu electrodes, whose methanol-oxidation activity was similar to untreated electrodes before the 200 cycles, showed a remarkable decrease in methanol oxidation after the cycles, because of the Ru dissolution from the PtRu surface. The results suggest that the Ru-oxide species are the origin of Ru dissolution in the PtRu alloy.

Effects of iron-phosphate coating on Ru dissolution in the PtRu thin-film electrodes

2009 ◽  
Vol 24 (1) ◽  
pp. 140-144 ◽  
Author(s):  
Yejun Park ◽  
Byungjoo Lee ◽  
Chunjoong Kim ◽  
Jongmin Kim ◽  
Byungwoo Park
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Direct Contact ◽  
Aqueous Electrolyte ◽  
Coating Layer ◽  
Iron Phosphate ◽  
Phosphate Coating ◽  
Nanoscale Coating ◽  
Thin Film Electrodes ◽  
Ru Species

The effects of FePO4 nanoscale coating on PtRu thin films were investigated on the block of Ru crossover. Ru dissolution was examined by the accelerated-potential cycles between 0.4 and 1.05 V. The results showed that Ru dissolution from FePO4-coated PtRu surface was inevitable due to the direct contact between the PtRu surface and aqueous electrolyte. However, the FePO4 coating layer on PtRu thin-film electrodes effectively retained the dissolved Ru species, thus preventing the dissolved Ru species from diffusing into the electrolyte. Moreover, the retained Ru species within the FePO4-coating layer were redeposited onto the PtRu surface during the cycling in the fresh electrolyte.

One-step hydrothermal method for preparation of Ni/carbon thin film electrodes for efficient electroreduction of imidacloprid

2021 ◽  
Vol 45 (7) ◽  
pp. 3469-3478
Author(s):  
Zongyu Liu ◽  
Ying Tian ◽  
Xuewei Dong ◽  
Xiaohui Zhou ◽  
Xiao Liu ◽  
...  
Keyword(s):  
Thin Film ◽  
Hydrothermal Method ◽  
Removal Efficiency ◽  
Carbon Thin Film ◽  
One Step ◽  
Thin Film Electrodes

A Ni/CTF was used as the cathode for electroreduction of imidacloprid, achieving a 92.1% removal efficiency for the electroreduction of imidacloprid.

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