Study on Influence Factors of HO Generation Efficiency on Both Cathode and Anode in a Diaphragm-Free Bath

Overview

Journal Materials (Basel)

Publisher MDPI

Date 2024 Apr 27

PMID 38673105

Authors

Tian Tian

Zhaohui Wang

Kun Li

Honglei Jin

Yang Tang

Yanzhi Sun

Pingyu Wan

Yongmei Chen

Affiliations

Soon will be listed here.

Abstract

Electrosynthesis of HO via both pathways of anodic two-electron water oxidation reaction (2e-WOR) and cathodic two-electron oxygen reduction reaction (2e-ORR) in a diaphragm-free bath can not only improve the generation rate and Faraday efficiency (FE), but also simplify the structure of the electrolysis bath and reduce the energy consumption. The factors that may affect the efficiency of HO generation in coupled electrolytic systems have been systematically investigated. A piece of fluorine-doped tin oxide (FTO) electrode was used as the anode, and in this study, its catalytic performance for 2e-WOR in NaCO/NaHCO and NaOH solutions was compared. Based on kinetic views, the generation rate of HO via 2e-WOR, the self-decomposition, and the oxidative decomposition rate of the generated HO during electrolysis in carbonate electrolytes were investigated. Furthermore, by choosing polyethylene oxide-modified carbon nanotubes (PEO-CNTs) as the catalyst for 2e-ORR and using its loaded electrode as the cathode, the coupled electrolytic systems for HO generation were set up in a diaphragm bath and in a diaphragm-free bath. It was found that the generated HO in the electrolyte diffuses and causes oxidative decomposition on the anode, which is the main influent factor on the accumulated concentration in HO in a diaphragm-free bath.

References

Zhao X, Liu Y . Origin of Selective Production of Hydrogen Peroxide by Electrochemical Oxygen Reduction. J Am Chem Soc. 2021; . DOI: 10.1021/jacs.1c02186. View

Zeng J, Zhang M, Qin X, He Y, Liu X, Zhu Y . Quenching residual HO from UV/HO with granular activated carbon: A significant impact of bicarbonate. Chemosphere. 2024; 354:141670. DOI: 10.1016/j.chemosphere.2024.141670. View

Zhao X, Levell Z, Yu S, Liu Y . Atomistic Understanding of Two-dimensional Electrocatalysts from First Principles. Chem Rev. 2022; 122(12):10675-10709. DOI: 10.1021/acs.chemrev.1c00981. View

Bakhmutova-Albert E, Yao H, Denevan D, Richardson D . Kinetics and mechanism of peroxymonocarbonate formation. Inorg Chem. 2010; 49(24):11287-96. DOI: 10.1021/ic1007389. View

Chang Q, Zhang P, Mostaghimi A, Zhao X, Denny S, Lee J . Promoting HO production via 2-electron oxygen reduction by coordinating partially oxidized Pd with defect carbon. Nat Commun. 2020; 11(1):2178. PMC: 7195490. DOI: 10.1038/s41467-020-15843-3. View

Chen S, Luo T, Chen K, Lin Y, Fu J, Liu K . Chemical Identification of Catalytically Active Sites on Oxygen-doped Carbon Nanosheet to Decipher the High Activity for Electro-synthesis Hydrogen Peroxide. Angew Chem Int Ed Engl. 2021; 60(30):16607-16614. DOI: 10.1002/anie.202104480. View

Wang Z, Xu W, Tan G, Duan X, Yuan B, Sendeku M . Single atomic Ru in TiO boost efficient electrocatalytic water oxidation to hydrogen peroxide. Sci Bull (Beijing). 2023; 68(6):613-621. DOI: 10.1016/j.scib.2023.03.003. View

Zhao S, Xi H, Zuo Y, Wang Q, Wang Z, Yan Z . Bicarbonate-activated hydrogen peroxide and efficient decontamination of toxic sulfur mustard and nerve gas simulants. J Hazard Mater. 2017; 344:136-145. DOI: 10.1016/j.jhazmat.2017.09.055. View

Shi X, Siahrostami S, Li G, Zhang Y, Chakthranont P, Studt F . Understanding activity trends in electrochemical water oxidation to form hydrogen peroxide. Nat Commun. 2017; 8(1):701. PMC: 5615073. DOI: 10.1038/s41467-017-00585-6. View

10.

Xue Y, Wang Y, Pan Z, Sayama K . Electrochemical and Photoelectrochemical Water Oxidation for Hydrogen Peroxide Production. Angew Chem Int Ed Engl. 2020; 60(19):10469-10480. DOI: 10.1002/anie.202011215. View

11.

Xu J, Zheng X, Feng Z, Lu Z, Zhang Z, Huang W . Organic wastewater treatment by a single-atom catalyst and electrolytically produced HO. Nat Sustain. 2021; 4:233-241. PMC: 8330436. DOI: 10.1038/s41893-020-00635-w. View

12.

Zhang C, Lu R, Liu C, Lu J, Zou Y, Yuan L . Trimetallic Sulfide Hollow Superstructures with Engineered d-Band Center for Oxygen Reduction to Hydrogen Peroxide in Alkaline Solution. Adv Sci (Weinh). 2022; 9(12):e2104768. PMC: 9036009. DOI: 10.1002/advs.202104768. View

13.

Campos-Martin J, Blanco-Brieva G, Fierro J . Hydrogen peroxide synthesis: an outlook beyond the anthraquinone process. Angew Chem Int Ed Engl. 2006; 45(42):6962-84. DOI: 10.1002/anie.200503779. View

14.

Fan L, Bai X, Xia C, Zhang X, Zhao X, Xia Y . CO/carbonate-mediated electrochemical water oxidation to hydrogen peroxide. Nat Commun. 2022; 13(1):2668. PMC: 9106728. DOI: 10.1038/s41467-022-30251-5. View

15.

Kim C, Park S, Kwak S, Xia Z, Kim G, Dai L . Concurrent oxygen reduction and water oxidation at high ionic strength for scalable electrosynthesis of hydrogen peroxide. Nat Commun. 2023; 14(1):5822. PMC: 10509222. DOI: 10.1038/s41467-023-41397-1. View