Effective electrochemical ozone production coupled with hydrogen evolution reaction by synergistic effect of PtCo alloy and borides

IF 4.1 2区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Science Pub Date : 2025-02-25 DOI:10.1016/j.ces.2025.121444

Fengying Gao, Xinyu Li, Lihao Liu, Mengmeng Lu, Huaijie Shi, Xuan Yu, Lei Ding, Shibin Wang, Sheng Dai, Xing Zhong, Jianguo Wang

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引用次数: 0

Abstract

Platinum-based electrocatalysts exhibited good performance in electrocatalytic ozone production (EOP) and hydrogen evolution reaction (HER). Nonetheless, the widespread application of platinum is restricted due to its limited availability and high cost. In this study, we propose an alloying strategy for the synthesis of PtCo/Co₂B, which achieved a Faraday efficiency (FE) of 9.09 % for EOP and overpotential of 51.5 mV for HER at 10 mA⋅cm⁻² in acidic conditions. Theoretical calculations demonstrate that the synergy between the PtCo and Co₂B in PtCo/Co₂B modulates the adsorption properties of the O₃* intermediate, thereby facilitating the reaction towards the EOP. Furthermore, the chemisorption energy of hydrogen is approximately zero, indicating optimal electrocatalytic activity for HER. Such unique structure enhances the performance of electrocatalyst and significantly extends its durability in practical applications. In addition to its electrochemical performance, the PtCo/Co₂B electrocatalyst effectively degrades organic pollutants and demonstrates strong sterilization capabilities.

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来源期刊

Chemical Engineering Science 工程技术-工程：化工

CiteScore

7.50

自引率

8.50%

发文量

1025

审稿时长

50 days

期刊介绍： Chemical engineering enables the transformation of natural resources and energy into useful products for society. It draws on and applies natural sciences, mathematics and economics, and has developed fundamental engineering science that underpins the discipline. Chemical Engineering Science (CES) has been publishing papers on the fundamentals of chemical engineering since 1951. CES is the platform where the most significant advances in the discipline have ever since been published. Chemical Engineering Science has accompanied and sustained chemical engineering through its development into the vibrant and broad scientific discipline it is today.