Volume 137, Issue 8 e202420286
Forschungsartikel

Subtle Modifications in Interface Configurations of Iron/Cobalt Phthalocyanine-Based Electrocatalysts Determine Molecular CO2 Reduction Activities

Yinger Xin

Yinger Xin

Department of Chemistry, State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue 83, Kowloon, Hong Kong SAR, 999077 P. R. China

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Charles B. Musgrave III

Charles B. Musgrave III

Materials and Process Simulation Center, California Institute of Technology, Pasadena, CA, 91125 United States

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Jianjun Su

Corresponding Author

Jianjun Su

Department of Chemistry, State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue 83, Kowloon, Hong Kong SAR, 999077 P. R. China

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Jiangtong Li

Jiangtong Li

Department of Applied Physics, Hong Kong Polytechnic University, 11 Yuk Choi Rd, Hung Hom, Hong Kong, SAR, 999077 P. R. China

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Pei Xiong

Pei Xiong

Department of Applied Physics, Hong Kong Polytechnic University, 11 Yuk Choi Rd, Hung Hom, Hong Kong, SAR, 999077 P. R. China

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Molly Meng-Jung Li

Corresponding Author

Molly Meng-Jung Li

Department of Applied Physics, Hong Kong Polytechnic University, 11 Yuk Choi Rd, Hung Hom, Hong Kong, SAR, 999077 P. R. China

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Yun Song

Yun Song

Department of Chemistry, State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue 83, Kowloon, Hong Kong SAR, 999077 P. R. China

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Qianfeng Gu

Qianfeng Gu

Department of Materials Science and Engineering, City University of Hong Kong, Tat Chee Avenue 83, Kowloon, Hong Kong SAR, 999077 P. R. China

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Qiang Zhang

Qiang Zhang

Department of Chemistry, State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue 83, Kowloon, Hong Kong SAR, 999077 P. R. China

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Yong Liu

Yong Liu

Department of Chemistry, State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue 83, Kowloon, Hong Kong SAR, 999077 P. R. China

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Weihua Guo

Weihua Guo

Department of Chemistry, State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue 83, Kowloon, Hong Kong SAR, 999077 P. R. China

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Le Cheng

Le Cheng

Department of Chemistry, State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue 83, Kowloon, Hong Kong SAR, 999077 P. R. China

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Xuefeng Tan

Xuefeng Tan

Department of Chemistry, State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue 83, Kowloon, Hong Kong SAR, 999077 P. R. China

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Qiu Jiang

Qiu Jiang

School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731 P. R. China

Contribution: Formal analysis (supporting)

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Chuan Xia

Chuan Xia

School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731 P. R. China

Contribution: Formal analysis (supporting)

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Prof. Ben Zhong Tang

Corresponding Author

Prof. Ben Zhong Tang

Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology Clear Water Bay, Hong Kong, SAR, 999077 P. R. China

School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen, Shenzhen, Guangdong, 518172 P. R. China

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William A. Goddard III

Corresponding Author

William A. Goddard III

Materials and Process Simulation Center, California Institute of Technology, Pasadena, CA, 91125 United States

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Prof. Ruquan Ye

Corresponding Author

Prof. Ruquan Ye

Department of Chemistry, State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue 83, Kowloon, Hong Kong SAR, 999077 P. R. China

City University of Hong Kong Shenzhen Research Institute, Shenzhen, Guangdong, 518057 P. R. China

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First published: 25 November 2024
Citations: 2

Abstract

Strain engineering has emerged as a powerful approach in steering material properties. However, the mechanism and potential limitations remain poorly understood. Here we report that subtle changes in molecular configurations can profoundly affect, conducively or adversely, the catalytic selectivity and product turnover frequencies (TOFs) of CO2 reduction reaction. Specifically, introducing molecular curvature in cobalt tetraaminophthalocyanine improves the multielectron reduction activity by favorable *CO hydrogenation, attaining methanol Faradaic efficiency up to 52 %. In stark contrast, strained iron phthalocyanine exacerbates *CO poisoning, leading to decreased TOFCO by >50 % at −0.5 VRHE and a rapid current decay. The uniform dispersion is crucial for optimizing electron transfer, while activity is distinctly sensitive to the local atomic environment around the active sites. Specifically, local strain either enhances binding to intermediates or poisons the catalytic sites. Our comprehensive analysis elucidates the intricate relationship between molecular structure and activities, offering insights into designing efficient heterogeneous molecular interfaces.

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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