Thermally prepared Ti/RhOx electrodes—I structural, electronic and surface properties

Roginskaya, Yu. E.; Морозова, О. В.; Kaplan, G.I.; Shifrina, R.R.; Smirnov, M. Yu.

doi:10.1016/0013-4686(93)85113-d

Cited by 17 publications

(10 citation statements)

References 11 publications

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“…Sn and Sb are detected in a proportion of 23.5% and 6%, respectively, while titanium is detected at 66.6%. This detection indicates that the thickness of the SnO 2 ®lm is, according to Rosinskaya et al [15], lower than 2 lm.…”

Section: Stability Testmentioning

confidence: 70%

Untitled

Velasco

Morallón

Quijada

et al. 1998

Journal of Applied Electrochemistry

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Doped tin dioxide electrodes have been prepared by a standard spray pyrolysis technique. The electrochemical behaviour of these electrodes has been investigated by cyclic voltammetry in sulphuric acid using the Fe 2+ /Fe 3+ redox couple system as test reaction. Oxygen evolution has been used to study the stability of doped SnO 2 electrodes. The SnO 2 electrodes doped with antimony and platinum exhibit the highest stability. XPS analysis shows that the oxidation state of Sn, Sb and Pt are +4, +3 and +2, respectively, the probable species being SnO 2 , Sb 2 O 3 and PtO.

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Section: Stability Testmentioning

confidence: 70%

Untitled

Velasco

Morallón

Quijada

et al. 1998

Journal of Applied Electrochemistry

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“…3C depicts the CV performed in reactor 3 at 2 mV s −1 on the DSA electrode at days 2, 5, 7, and at the end of the experiment with the cleaned electrode dipped again in the reactor medium. The cleaned electrode revealed the common characteristic behaviour of DSA with the charge and discharge of the oxide surface species, without any contribution from dissolved species [35]. In the presence of the biofilm, the scans revealed a superimposed faradic behaviour, which logically followed evolution in current values that were sustained during chronoamperometry: high current on CV performed at days 2 and 5 and a low current on CV at day 7.…”

Section: Cyclic Voltammetry (Cv) On Dsa and Graphite Anodesmentioning

confidence: 90%

DSA to grow electrochemically active biofilms of Geobacter sulfurreducens

Dumas

Basseguy

Bergel

2008

Electrochimica Acta

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Biofilms of Geobacter sulfurreducens were grown on graphite and on dimensionally stable anodes (DSA) in medium that did not contain any soluble electron acceptor. Several working electrodes were individually addressed and placed in the same reactor to compare their electrochemical behaviour in exactly the same biochemical conditions. Under constant polarization at 0.20 V versus Ag/AgCl, the electrodes were able progressively to oxidize acetate (5 mM), and average current densities around 5 A m −2 and 8 A m −2 were sustained for days on DSA and graphite, respectively. Removing the biofilm from the electrodes led the current to zero, while changing the medium by fresh one did not disturb the current when contact to air was avoided. This confirmed that the biofilm was fully responsible for the electro-catalysis of acetate oxidation and the current was not due to the accumulation of compounds in the bulk. Cyclic voltammetries performed during chronoamperometry indicated that the oxidation started above 0.05 V versus Ag/AgCl. The difference in maximal current values obtained with DSA and graphite was not linked to the biofilm coverage ratios, which were of the same order of magnitude in the range of 62-78%. On the contrary, the difference in maximal current values matched the ratio of the average surface roughness of the materials, 5.6 m and 3.2 m for graphite and DSA, respectively.

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“…To verify if the coatings present behaviour consistent with earlier works [17,18] XRD patterns were recorded. Despite the use of the low angle procedure, irradiation reached the coating support giving rise to the characteristic Ti peaks at 35.…”

Section: Xrd Characterisationmentioning

confidence: 93%

“…Since the bulk of rhodium based thermal oxide coatings is mainly composed of Rh 2 O 3 /RhO 2 [17,18] the fact that several rhodium oxides (e.g. Rh 2 O 3 , RhO 2 , RhOOH) present low electrical resistivity is of importance for its solid-state electrochemistry.…”

Section: Introductionmentioning

confidence: 99%