Nitrate reduction on tin-modified rhodium, ruthenium, and iridium electrodes

Piao, Shuying; Kayama, Yota; Nakano, Yoshifumi; Nakata, Katsuhiko; Yoshinaga, Yusuke; Shimazu, Katsuaki

doi:10.1016/j.jelechem.2009.01.031

Cited by 50 publications

(42 citation statements)

References 30 publications

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“…Recently, we reported that Sn-modified noble metal electrodes showed a much higher electrocatalytic activity for nitrate reduction in an acidic solution than any other previously reported electrodes [36][37][38][39][40][41]. It was clearly shown that the Sn modification increases the electrocatalytic activity, while the catalytic activity is very low for the unmodified noble metal electrodes.…”

Section: Introductionmentioning

confidence: 77%

“…The deposition amounts of the Ru and Ir electrodes corresponded to 30 and more than five layers, respectively. The characterization of the noble metal and the Sn-modified noble metal electrodes using XPS and QCM techniques were reported in our previous studies [36,40,41]. …”

Section: Substratementioning

confidence: 99%

“…The Sn coverage (h Sn ) was determined from cyclic voltammograms in the hydrogen region in 0.1 M HClO 4 using the equation h Sn = ðQ 0 H À Q H Þ=Q 0 H , where Q 0 H and Q H are the charges due to the oxidation of the adsorbed hydrogen atoms before and after the adsorption of Sn, respectively, as described in previous reports [36,40,41]. The coverage was controlled by the SnCl 2 concentration (0.10-0.25 mM) and immersion time.…”

Section: Electrochemistrymentioning

confidence: 99%

“…In addition, the Sn-modified Ru, Rh, Pd, Ir, and Pt electrodes showed high activity for nitrate reduction [36,40,41] and they are expected to be effective for the nitrite reduction. In this paper, we report the reduction activity of nitrite and distribution of the reduction products on Sn-modified and unmodified Ru, Rh, Pd, Ir, and Pt electrodes.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Reduction of nitrite on tin-modified noble metal electrodes

Nakata¹,

Doi²,

Kubota³

et al. 2010

Journal of Electroanalytical Chemistry

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Section: Introductionmentioning

confidence: 77%

Section: Substratementioning

confidence: 99%

Section: Electrochemistrymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reduction of nitrite on tin-modified noble metal electrodes

Nakata¹,

Doi²,

Kubota³

et al. 2010

Journal of Electroanalytical Chemistry

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“…The group of Shimazu has published a number of papers showing that the reduction of nitrate on Snmodified Pt (as well as other transition-metal) electrodes yields considerable amounts of N 2 [7,13], as detected in the collected gas after several hours of electrolysis. Under somewhat different conditions of a very high cathodic overpotential, a pure Sn electrode was also found to yield the formation of nitrogen gas, with the cathodic corrosion to tin-hydride observed at the same time [14,15].…”

Section: Introductionmentioning

confidence: 99%

Formation of volatile products during nitrate reduction on a Sn-modified Pt electrode in acid solution

Yang

Duca

Schouten

et al. 2011

Journal of Electroanalytical Chemistry

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Electrocatalytic Reduction of Nitrate on a Pt Electrode Modified by p‐Block Metal Adatoms in Acid Solution

et al. 2013

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Nitrate reduction was investigated on a polycrystalline Pt electrode modified with p‐block metals, such as indium, gallium, thallium, tin, lead, arsenic, antimony, bismuth, zinc, and cadmium, in both perchloric and sulfuric acid solution. Online electrochemical mass spectrometry was applied to detect volatile products on the electrode surface. In perchloric acid, tin, cadmium, indium, and gallium were found as active promoters for nitrate reduction, and N2O was detected as the main product for cadmium‐ and indium‐modified Pt electrode, whereas the tin‐modified electrode produced both NO and N2O. Lead cations inhibited nitrate reduction, but N2O was still formed selectively. In sulfuric acid, tin was an active promoter and showed the same coverage dependence for the product distribution as was reported previously for perchloric acid. Thallium performed similarly to germanium in that both metal cations only promoted nitrate reduction in sulfuric acid but not in perchloric acid, which could be attributed to their effect on disordering the bisulfate adsorption on Pt to recover active sites for nitrate reduction. Arsenic, antimony, and bismuth exhibited a similar effect on nitrate reduction on Pt sites in both acid electrolytes; they inhibited nitrate reduction on free Pt sites in the low‐potential range. Among the p‐block metals that were investigated, tin was the most active promoter for nitrate reduction, considering both the anion effect and the product distribution. DFT calculations were performed to gain insight into the promoting role of the two most active promoters, tin and indium.

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Nitrate reduction on tin-modified rhodium, ruthenium, and iridium electrodes

Cited by 50 publications

References 30 publications

Reduction of nitrite on tin-modified noble metal electrodes

Reduction of nitrite on tin-modified noble metal electrodes

Formation of volatile products during nitrate reduction on a Sn-modified Pt electrode in acid solution

Electrocatalytic Reduction of Nitrate on a Pt Electrode Modified by p‐Block Metal Adatoms in Acid Solution

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