Hydrogen Peroxide Electrosynthesis in a Strong Acidic Environment Using Cationic Surfactants

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dc.citation.firstpage129en_US
dc.citation.issueNumber4en_US
dc.citation.journalTitlePrecision Chemistryen_US
dc.citation.lastpage137en_US
dc.citation.volumeNumber2en_US
dc.contributor.authorAdler, Zacharyen_US
dc.contributor.authorZhang, Xiaoen_US
dc.contributor.authorFeng, Guangxiaen_US
dc.contributor.authorShi, Yapingen_US
dc.contributor.authorZhu, Pengen_US
dc.contributor.authorXia, Yangen_US
dc.contributor.authorShan, Xiaonanen_US
dc.contributor.authorWang, Haotianen_US
dc.date.accessioned2024-07-25T20:55:16Zen_US
dc.date.available2024-07-25T20:55:16Zen_US
dc.date.issued2024en_US
dc.description.abstractThe two-electron oxygen reduction reaction (2e–-ORR) can be exploited for green production of hydrogen peroxide (H2O2), but it still suffers from low selectivity in an acidic electrolyte when using non-noble metal catalysts. Here, inspired by biology, we demonstrate a strategy that exploits the micellization of surfactant molecules to promote the H2O2 selectivity of a low-cost carbon black catalyst in strong acid electrolytes. The surfactants near the electrode surface increase the oxygen solubility and transportation, and they provide a shielding effect that displaces protons from the electric double layer (EDL). Compared with the case of a pure acidic electrolyte, we find that, when a small number of surfactant molecules were added to the acid, the H2O2 Faradaic efficiency (FE) was improved from 12% to 95% H2O2 under 200 mA cm–2, suggesting an 8-fold improvement. Our in situ surface enhanced Raman spectroscopy (SERS) and optical microscopy (OM) studies suggest that, while the added surfactant reduces the electrode’s hydrophobicity, its micelle formation could promote the O2 gas transport and its hydrophobic tail could displace local protons under applied negative potentials during catalysis, which are responsible for the improved H2O2 selectivity in strong acids.en_US
dc.identifier.citationAdler, Z., Zhang, X., Feng, G., Shi, Y., Zhu, P., Xia, Y., Shan, X., & Wang, H. (2024). Hydrogen Peroxide Electrosynthesis in a Strong Acidic Environment Using Cationic Surfactants. Precision Chemistry, 2(4), 129–137. https://doi.org/10.1021/prechem.3c00096en_US
dc.identifier.digitaladler-et-al-2024en_US
dc.identifier.doihttps://doi.org/10.1021/prechem.3c00096en_US
dc.identifier.urihttps://hdl.handle.net/1911/117507en_US
dc.language.isoengen_US
dc.publisherAmerican Chemical Societyen_US
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution (CC BY) license.  Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleHydrogen Peroxide Electrosynthesis in a Strong Acidic Environment Using Cationic Surfactantsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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