Steering the activity and selectivity of liquid fuels electro-oxidation via molecule in-situ modification of Pt

IF 5.5 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta Pub Date : 2025-04-02 DOI:10.1016/j.electacta.2025.146185

Xiaomei Ning, Yifan Wei, Zhiqiang Tang, Silin He, Xiaoting Chen, Kaitong Yan, Liang Zhan

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Abstract

The catalytic efficiency of the formic acid electro-oxidation reaction (FAOR) and glycerol electro-oxidation reaction (GOR) using a Pt catalyst was substantially enhanced by adding 7,7,8,8-tetracyanoquinodimethane (TCNQ) dissolved in acetonitrile solution (ACN) into the reaction solution. The dynamic structure of TCNQ(ACN) and blank ACN modified Pt catalysts, along with their impacts on the performances in FAOR and GOR were analyzed. A strong relationship was established between the performance of FAOR and GOR and the modifier concentration in the reaction solution. ACN exerted a geometric blocking effect on Pt, thereby considerably improving the direct dehydrogenation process of FAOR. Based on ACN, the performance of the dehydrogenation process of FAOR and GOR was further boosted for the surface electron-rich Pt catalyst due to modification with additional TCNQ modifier. Additionally, the resistance to CO poisoning of modified Pt catalyst was notably improved, and the onset potential decreased from 0.656 V of the unmodified Pt to 0.583 V for a specific amount of TCNQ(ACN) modified Pt catalyst. This study offers a novel perspective to optimize the catalytic performance of the catalyst.

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来源期刊

Electrochimica Acta 工程技术-电化学

CiteScore

11.30

自引率

6.10%

发文量

1634

审稿时长

41 days

期刊介绍： Electrochimica Acta is an international journal. It is intended for the publication of both original work and reviews in the field of electrochemistry. Electrochemistry should be interpreted to mean any of the research fields covered by the Divisions of the International Society of Electrochemistry listed below, as well as emerging scientific domains covered by ISE New Topics Committee.