Volume 46, Issue 12 pp. 17015-17028
RESEARCH ARTICLE

Facile synthesis and composition-tuning of bimetallic PbCd nanoparticles as superior CO2-to-HCOOH electrocatalysts

Xueliang Sun

Xueliang Sun

Institute for Sustainable Energy, College of Sciences, Shanghai University, Shanghai, China

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Qilong Wang

Qilong Wang

Institute for Sustainable Energy, College of Sciences, Shanghai University, Shanghai, China

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Yuyu Liu

Corresponding Author

Yuyu Liu

Institute for Sustainable Energy, College of Sciences, Shanghai University, Shanghai, China

Correspondence

Yuyu Liu, Institute for Sustainable Energy, College of Sciences, Shanghai University, Shanghai 200444, China.

Email: [email protected]

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Jin Yi

Jin Yi

Institute for Sustainable Energy, College of Sciences, Shanghai University, Shanghai, China

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Jiujun Zhang

Jiujun Zhang

Institute for Sustainable Energy, College of Sciences, Shanghai University, Shanghai, China

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First published: 11 July 2022
Citations: 3

Funding information: National Natural Science Foundation of China, Grant/Award Number: 22072087

Summary

CO2 reduction to produce value-added chemicals/fuels is generally considered as an effective way to solve the energy crisis and global warming. However, the greatest challenge to the technology is the lack of high-performance catalysts as this process is quite sluggish under mild conditions. Herein, we have carefully prepared a series of bimetallic PbxCdy nanoparticles (NPs) as well as their monometallic counterparts via a facile chemical reduction. Electrocatalytic performances of obtained catalysts were evaluated with respect to chemical composition, electrolytic potential, and so on. All of them exhibit high performance and achieve high faradaic efficiency for HCOOH production (FEHCOOH) over a voltage window of −1.16 to −1.26 V vs the reversible hydrogen electrode (VRHE). Among them, Pb3Cd1 achieved a maximum FEHCOOH of 96% at −1.16 VRHE and a desirable stability over 12 hours of continuous electrolysis. The excellent performance of Pb3Cd1 can be attributed to the huge specific area of NPs and the synergistic effect of the components. This study shows that efficient bimetallic PbxCdy electrocatalysts have a large application potential for highly selective HCOOH production from CO2.

Highlights

  1. Bimetallic PbCd nanoparticles were synthesized by facile chemical reduction for electrocatalytic CO2 reduction.
  2. PbCd nanocatalysts performed well in highly active, selective, and stable HCOOH electrosynthesis from aqueous CO2.
  3. Pb3Cd1 achieved maximum HCOOH faradaic efficiency of 96% at −1.16 VRHE, a record as far as we know.
  4. A stable current density (>7 mA cm−2) can be kept after a 12-hours continuous electrolysis.

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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