Monitoring the Dissolution and Hydrolysis of Pyrosulfate by Electrochemistry at a Liquid-Liquid Microinterface Array
Dissolution and hydrolysis processes are important in a variety of settings, including industrial and environmental applications. In this work, the hydrolysis of pyrosulfate (disulfate) was investigated by ion-transfer electrochemistry at an array of microinterfaces between two immiscible electrolyt...
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| Format: | Journal Article |
| Language: | English |
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WILEY-V C H VERLAG GMBH
2022
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| Online Access: | http://purl.org/au-research/grants/arc/LP160100359 http://hdl.handle.net/20.500.11937/89999 |
| _version_ | 1848765306304987136 |
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| author | Henares, Terence G. Gale, Julian Herzog, G. Arrigan, Damien |
| author_facet | Henares, Terence G. Gale, Julian Herzog, G. Arrigan, Damien |
| author_sort | Henares, Terence G. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Dissolution and hydrolysis processes are important in a variety of settings, including industrial and environmental applications. In this work, the hydrolysis of pyrosulfate (disulfate) was investigated by ion-transfer electrochemistry at an array of microinterfaces between two immiscible electrolyte solutions (μITIES). Current associated with pyrosulfate transfer was observed, but it decreased with time. This is due to the hydrolysis of pyrosulfate to hydrogen sulfate and sulfate. Corroborating data for the hydrolysis was obtained from pH measurements (acidification of the aqueous solution) and Raman spectroscopy (formation of sulfate and hydrogen sulfate). Measurement of the ion-transfer potential from the voltammograms enabled estimation of pyrosulfate's Gibbs energy of transfer between the phases. Quantum mechanical calculations were employed to estimate the thermodynamics for the reactions of pyrosulfate, hydrogen sulfate and sulfate, which supported the experimentally observed trends. Altogether, these results illustrate the use of electrochemistry at the μITIES to characterise dissolution and hydrolysis processes. |
| first_indexed | 2025-11-14T11:33:09Z |
| format | Journal Article |
| id | curtin-20.500.11937-89999 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:33:09Z |
| publishDate | 2022 |
| publisher | WILEY-V C H VERLAG GMBH |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-899992023-02-07T01:04:25Z Monitoring the Dissolution and Hydrolysis of Pyrosulfate by Electrochemistry at a Liquid-Liquid Microinterface Array Henares, Terence G. Gale, Julian Herzog, G. Arrigan, Damien Science & Technology Physical Sciences Electrochemistry electrochemistry hydrolysis interfaces ITIES pyrosulfate ION TRANSFER POTENTIAL WINDOW INTERFACE SULFATE ABSORPTION OXIDATION ENERGIES Dissolution and hydrolysis processes are important in a variety of settings, including industrial and environmental applications. In this work, the hydrolysis of pyrosulfate (disulfate) was investigated by ion-transfer electrochemistry at an array of microinterfaces between two immiscible electrolyte solutions (μITIES). Current associated with pyrosulfate transfer was observed, but it decreased with time. This is due to the hydrolysis of pyrosulfate to hydrogen sulfate and sulfate. Corroborating data for the hydrolysis was obtained from pH measurements (acidification of the aqueous solution) and Raman spectroscopy (formation of sulfate and hydrogen sulfate). Measurement of the ion-transfer potential from the voltammograms enabled estimation of pyrosulfate's Gibbs energy of transfer between the phases. Quantum mechanical calculations were employed to estimate the thermodynamics for the reactions of pyrosulfate, hydrogen sulfate and sulfate, which supported the experimentally observed trends. Altogether, these results illustrate the use of electrochemistry at the μITIES to characterise dissolution and hydrolysis processes. 2022 Journal Article http://hdl.handle.net/20.500.11937/89999 10.1002/celc.202200681 English http://purl.org/au-research/grants/arc/LP160100359 http://purl.org/au-research/grants/arc/FL180100087 http://creativecommons.org/licenses/by-nc-nd/4.0/ WILEY-V C H VERLAG GMBH fulltext |
| spellingShingle | Science & Technology Physical Sciences Electrochemistry electrochemistry hydrolysis interfaces ITIES pyrosulfate ION TRANSFER POTENTIAL WINDOW INTERFACE SULFATE ABSORPTION OXIDATION ENERGIES Henares, Terence G. Gale, Julian Herzog, G. Arrigan, Damien Monitoring the Dissolution and Hydrolysis of Pyrosulfate by Electrochemistry at a Liquid-Liquid Microinterface Array |
| title | Monitoring the Dissolution and Hydrolysis of Pyrosulfate by Electrochemistry at a Liquid-Liquid Microinterface Array |
| title_full | Monitoring the Dissolution and Hydrolysis of Pyrosulfate by Electrochemistry at a Liquid-Liquid Microinterface Array |
| title_fullStr | Monitoring the Dissolution and Hydrolysis of Pyrosulfate by Electrochemistry at a Liquid-Liquid Microinterface Array |
| title_full_unstemmed | Monitoring the Dissolution and Hydrolysis of Pyrosulfate by Electrochemistry at a Liquid-Liquid Microinterface Array |
| title_short | Monitoring the Dissolution and Hydrolysis of Pyrosulfate by Electrochemistry at a Liquid-Liquid Microinterface Array |
| title_sort | monitoring the dissolution and hydrolysis of pyrosulfate by electrochemistry at a liquid-liquid microinterface array |
| topic | Science & Technology Physical Sciences Electrochemistry electrochemistry hydrolysis interfaces ITIES pyrosulfate ION TRANSFER POTENTIAL WINDOW INTERFACE SULFATE ABSORPTION OXIDATION ENERGIES |
| url | http://purl.org/au-research/grants/arc/LP160100359 http://purl.org/au-research/grants/arc/LP160100359 http://hdl.handle.net/20.500.11937/89999 |