Highly Selective Active Chlorine Generation Electrocatalyzed by Co3 O4 Nanoparticles: Mechanistic Investigation through in Situ Electrokinetic and Spectroscopic Analyses

The Journal of Physical Chemistry Letters
Heonjin HaKi Tae Nam

Abstract

The reaction mechanism of electrochemical chloride oxidation at neutral pH is different from that at acidic pH, in which a commercial chlor-alkali process has been developed. Different proton concentrations and accelerated hydrolysis of the generated chlorine into hypochlorous acid at high pH can change the electrokinetics and stability of reaction intermediates. We have investigated a unique reaction mechanism of Co3O4 nanoparticles for chloride oxidation at neutral pH. In contrast with water oxidation, the valency of cobalt was not changed during chloride oxidation. Interestingly, a new intermediate of Co-Cl was captured spectroscopically, distinct from the reaction intermediate at acidic pH. In addition, Co3O4 nanoparticles exhibited high selectivity for active chlorine generation at neutral pH, comparable to commercially available RuO2-based catalysts. We believe that this study provides insight into designing efficient electrocatalysts for active chlorine generation at neutral pH, which can be practically applied to electrochemical water treatment coupled to hydrogen production.

References

Jan 18, 2007·Chemical Society Reviews·Carlos A Martínez-Huitle, Sergio Ferro
May 4, 2010·Journal of the American Chemical Society·J Gregory McAlpinR David Britt
Sep 16, 2010·Journal of the American Chemical Society·Matthew W KananDaniel G Nocera
Oct 28, 2010·Journal of the American Chemical Society·Yogesh SurendranathDaniel G Nocera
Mar 19, 2011·Journal of the American Chemical Society·Boon Siang Yeo, Alexis T Bell
Feb 18, 2016·Chemical Reviews·Rasmus K B Karlsson, Ann Cornell
Feb 18, 2016·Marine Pollution Bulletin·Shuiping ChenSteve Sandoe
Dec 29, 2016·Journal of the American Chemical Society·Kyoungsuk JinKi Tae Nam
Jan 14, 2017·Chemical Society Reviews·Nian-Tzu SuenHao Ming Chen
Mar 30, 2017·Proceedings of the National Academy of Sciences of the United States of America·Casey N BrodskyDaniel G Nocera

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Citations

Jul 20, 2021·Chemical Science·Gracita M TombocKyoungsuk Jin

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