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http://hdl.handle.net/1942/37682
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DC Field | Value | Language |
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dc.contributor.author | Tackett, Brian M. | - |
dc.contributor.author | Raciti, David | - |
dc.contributor.author | BRADY, Nick | - |
dc.contributor.author | Ritzert, Nicole L. | - |
dc.contributor.author | Moffat, Thomas P. | - |
dc.date.accessioned | 2022-07-07T13:59:25Z | - |
dc.date.available | 2022-07-07T13:59:25Z | - |
dc.date.issued | 2022 | - |
dc.date.submitted | 2022-07-07T09:24:27Z | - |
dc.identifier.citation | Journal of physical chemistry. C, 126 (17) , p. 7456 -7467 | - |
dc.identifier.uri | http://hdl.handle.net/1942/37682 | - |
dc.description.abstract | Electrocatalytic reduction of CO2 to CO in aqueous media offers an important path to more sustainable carbon utilization. Optimization of this process relies on a detailed understanding of the dynamics of boundary layer chemistry, e.g., pH, adjacent to the electrode, which is difficult to quantify without perturbing the system. In this work, a versatile IrOx pH-sensing thin film is fabricated on the ring of a rotating ring disk electrode (RRDE) to enable potentiometric boundary layer pH measurement under well-defined mass flow conditions. An analytical reaction-convection-diffusion model is used to translate ring measurements to the pH at the disk surface under reaction conditions. The measurements and model effectively capture the drastic pH shear on a Au electrode during hydrogen evolution reaction in a weak acid electrolyte. The pH trends are measured during CO2 reduction reaction in a 0.5 mol L-1 bicarbonate electrolyte, where the impact of buffering action is clearly demonstrated as a function of the rotation rate and RRDE geometry. The model and measurement provide a useful platform for further exploration of electrode kinetics influenced by reaction-induced pH change. | - |
dc.description.sponsorship | B.M.T. acknowledges support from the National Institute of Standards and Technology-National Research Council Postdoctoral Fellowship. | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.rights | 2022 American Chemical Society | - |
dc.title | Potentiometric Rotating Ring Disk Electrode Study of Interfacial pH during CO2 Reduction and H-2 Generation in Neutral and Weakly Acidic Media | - |
dc.type | Journal Contribution | - |
dc.identifier.epage | 7467 | - |
dc.identifier.issue | 17 | - |
dc.identifier.spage | 7456 | - |
dc.identifier.volume | 126 | - |
local.format.pages | 12 | - |
local.bibliographicCitation.jcat | A1 | - |
dc.description.notes | Moffat, TP (corresponding author), NIST, Mat Sci & Engn Div, Gaithersburg, MD 20899 USA. | - |
dc.description.notes | thomas.moffat@nist.gov | - |
local.publisher.place | 1155 16TH ST, NW, WASHINGTON, DC 20036 USA | - |
local.type.refereed | Refereed | - |
local.type.specified | Article | - |
dc.identifier.doi | 10.1021/acs.jpcc.2c01504 | - |
dc.identifier.isi | WOS:000814854000012 | - |
local.provider.type | wosris | - |
local.description.affiliation | [Tackett, Brian M.; Raciti, David; Moffat, Thomas P.] NIST, Mat Sci & Engn Div, Gaithersburg, MD 20899 USA. | - |
local.description.affiliation | [Tackett, Brian M.] Purdue Univ, Davidson Sch Chem Engn, W Lafayette, IN 47907 USA. | - |
local.description.affiliation | [Brady, Nicholas W.] UHasselt, Inst Mat Res IMO Imomec, B-3500 Hasselt, Belgium. | - |
local.description.affiliation | [Ritzert, Nicole L.] Amer Dent Assoc Sci & Res Inst, Gaithersburg, MD 20899 USA. | - |
local.uhasselt.international | yes | - |
item.contributor | Tackett, Brian M. | - |
item.contributor | Raciti, David | - |
item.contributor | BRADY, Nick | - |
item.contributor | Ritzert, Nicole L. | - |
item.contributor | Moffat, Thomas P. | - |
item.fulltext | With Fulltext | - |
item.fullcitation | Tackett, Brian M.; Raciti, David; BRADY, Nick; Ritzert, Nicole L. & Moffat, Thomas P. (2022) Potentiometric Rotating Ring Disk Electrode Study of Interfacial pH during CO2 Reduction and H-2 Generation in Neutral and Weakly Acidic Media. In: Journal of physical chemistry. C, 126 (17) , p. 7456 -7467. | - |
item.validation | ecoom 2023 | - |
item.accessRights | Restricted Access | - |
crisitem.journal.issn | 1932-7447 | - |
crisitem.journal.eissn | 1932-7455 | - |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
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Potentiometric Rotating Ring Disk Electrode Study of Interfacial pH during CO2 Reduction and H2 Generation in Neutral and Weakly Acidic Media.pdf Restricted Access | Published version | 3.11 MB | Adobe PDF | View/Open Request a copy |
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