Platinum dissolution in nitrogen oxides-containing HClO4 solution studied by electrochemical quartz crystal microbalance

H. Kuroe, T. Morita, Y. Uchiyama, T. Abe, Shinichiro Imabayashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Platinum (Pt) dissolution has been elucidated by measuring a mass loss of Pt black-deposited Au quartz resonators in 0.1 mol dm-3 HClO 4 containing NaNO2. A continuous weight loss of ca. 50 ng cm-2 cycle-1 was detected at [NaNO2] = 0.01 mol dm-3 under the potential cycling between 0.6 and 1.4 V vs. RHE. The magnitude of Pt dissolution depends on the concentration of NaNO2 and the range of potential cycling. The average mass loss decreases to 5∼10 ng cm-2 cycle-1 at [NaNO2] = 1 mmol dm -3. The Pt dissolution occurs when the higher potential limit is more than 1.0 V vs. RHE and the lower potential limit is less than 0.9 V vs. RHE, suggesting that the reduction of Pt oxide in the presence of NaNO2 in the bulk solution contributes to the dissolution.

Original languageEnglish
Title of host publicationECS Transactions
Pages1607-1612
Number of pages6
Volume50
Edition2
DOIs
Publication statusPublished - 2012
Event12th Polymer Electrolyte Fuel Cell Symposium, PEFC 2012 - 222nd ECS Meeting - Honolulu, HI
Duration: 2012 Oct 72012 Oct 12

Other

Other12th Polymer Electrolyte Fuel Cell Symposium, PEFC 2012 - 222nd ECS Meeting
CityHonolulu, HI
Period12/10/712/10/12

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Quartz crystal microbalances
Nitrogen oxides
Platinum
Dissolution
Quartz
Resonators
Oxides

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Platinum dissolution in nitrogen oxides-containing HClO4 solution studied by electrochemical quartz crystal microbalance. / Kuroe, H.; Morita, T.; Uchiyama, Y.; Abe, T.; Imabayashi, Shinichiro.

ECS Transactions. Vol. 50 2. ed. 2012. p. 1607-1612.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kuroe, H, Morita, T, Uchiyama, Y, Abe, T & Imabayashi, S 2012, Platinum dissolution in nitrogen oxides-containing HClO4 solution studied by electrochemical quartz crystal microbalance. in ECS Transactions. 2 edn, vol. 50, pp. 1607-1612, 12th Polymer Electrolyte Fuel Cell Symposium, PEFC 2012 - 222nd ECS Meeting, Honolulu, HI, 12/10/7. https://doi.org/10.1149/05002.1607ecst
Kuroe, H. ; Morita, T. ; Uchiyama, Y. ; Abe, T. ; Imabayashi, Shinichiro. / Platinum dissolution in nitrogen oxides-containing HClO4 solution studied by electrochemical quartz crystal microbalance. ECS Transactions. Vol. 50 2. ed. 2012. pp. 1607-1612
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abstract = "Platinum (Pt) dissolution has been elucidated by measuring a mass loss of Pt black-deposited Au quartz resonators in 0.1 mol dm-3 HClO 4 containing NaNO2. A continuous weight loss of ca. 50 ng cm-2 cycle-1 was detected at [NaNO2] = 0.01 mol dm-3 under the potential cycling between 0.6 and 1.4 V vs. RHE. The magnitude of Pt dissolution depends on the concentration of NaNO2 and the range of potential cycling. The average mass loss decreases to 5∼10 ng cm-2 cycle-1 at [NaNO2] = 1 mmol dm -3. The Pt dissolution occurs when the higher potential limit is more than 1.0 V vs. RHE and the lower potential limit is less than 0.9 V vs. RHE, suggesting that the reduction of Pt oxide in the presence of NaNO2 in the bulk solution contributes to the dissolution.",
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