Volume 63, Issue 40 e202409001
Research Article

Highly Dispersed Pd-CeOx Nanoparticles in Zeolite Nanosheets for Efficient CO2-Mediated Hydrogen Storage and Release

Chengxu Li

Chengxu Li

Innovation Center for Chemical Science, College of Chemistry, Chemical Engineering and Materials Science, Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, 215123 P. R. China

These authors contributed equally.

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Guangyuan He

Guangyuan He

School of Materials Science and Engineering and School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387 P. R. China

These authors contributed equally.

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Ziqiang Qu

Ziqiang Qu

Innovation Center for Chemical Science, College of Chemistry, Chemical Engineering and Materials Science, Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, 215123 P. R. China

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Kai Zhang

Kai Zhang

Innovation Center for Chemical Science, College of Chemistry, Chemical Engineering and Materials Science, Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, 215123 P. R. China

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Liwen Guo

Liwen Guo

Innovation Center for Chemical Science, College of Chemistry, Chemical Engineering and Materials Science, Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, 215123 P. R. China

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Prof. Tianjun Zhang

Prof. Tianjun Zhang

State Key Laboratory of New Pharmaceutical Preparations and Excipients, College of Chemistry and Materials Science, Hebei University, Baoding, 071002 P. R. China

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Prof. Jichao Zhang

Prof. Jichao Zhang

Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, P. R. China

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Prof. Qiming Sun

Corresponding Author

Prof. Qiming Sun

Innovation Center for Chemical Science, College of Chemistry, Chemical Engineering and Materials Science, Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, 215123 P. R. China

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Prof. Donghai Mei

Corresponding Author

Prof. Donghai Mei

School of Materials Science and Engineering and School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387 P. R. China

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Prof. Jihong Yu

Prof. Jihong Yu

State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, International Center of Future Science, College of Chemistry, Jilin University, Changchun, 130012 P. R. China

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First published: 11 July 2024
Citations: 14

Graphical Abstract

This study introduces the synthesis of bimetallic Pd-based nanocatalysts on zeolite nanosheets, demonstrating exceptional catalytic performance in formic acid dehydrogenation and CO2 hydrogenation to formate. The outstanding catalytic performance is attributed to significantly enhanced thermal stability, metal utilization, and transport efficiency. These findings offer crucial insights for advancing safe, efficient, and sustainable hydrogen technology development.

Abstract

Formic acid (FA) dehydrogenation and CO2 hydrogenation to FA/formate represent promising methodologies for the efficient and clean storage and release of hydrogen, forming a CO2-neutral energy cycle. Here, we report the synthesis of highly dispersed and stable bimetallic Pd-based nanoparticles, immobilized on self-pillared silicalite-1 (SP-S-1) zeolite nanosheets using an incipient wetness co-impregnation technique. Owing to the highly accessible active sites, effective mass transfer, exceptional hydrophilicity, and the synergistic effect of the bimetallic species, the optimized PdCe0.2/SP-S-1 catalyst demonstrated unparalleled catalytic performance in both FA dehydrogenation and CO2 hydrogenation to formate. Remarkably, it achieved a hydrogen generation rate of 5974 molH2 molPd−1 h−1 and a formate production rate of 536 molformate molPd−1 h−1 at 50 °C, surpassing most previously reported heterogeneous catalysts under similar conditions. Density functional theory calculations reveal that the interfacial effect between Pd and cerium oxide clusters substantially reduces the activation barriers for both reactions, thereby increasing the catalytic performance. Our research not only showcases a compelling application of zeolite nanosheet-supported bimetallic nanocatalysts in CO2-mediated hydrogen storage and release but also contributes valuable insights towards the development of safe, efficient, and sustainable hydrogen technologies.

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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