Volume 62, Issue 45 e202312734
Research Article

Photocatalytic Free Radical-Controlled Synthesis of High-Performance Single-Atom Catalysts

Xiang Chen

Xiang Chen

MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234 China

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Dr. Shuhui Guan

Dr. Shuhui Guan

MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234 China

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Jianjiang Zhou

Jianjiang Zhou

MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234 China

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Hengjun Shang

Hengjun Shang

MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234 China

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Jingyuan Zhang

Jingyuan Zhang

MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234 China

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Fujian Lv

Fujian Lv

College of Chemistry and Environmental Science, Qujing Normal University, Qujing, 655400 China

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Prof. Han Yu

Corresponding Author

Prof. Han Yu

MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234 China

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Prof. Dr. Hexing Li

Prof. Dr. Hexing Li

MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234 China

Shanghai University of Electric Power, 2588 Changyang Rd., Shanghai, 200090 China

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Prof. Zhenfeng Bian

Corresponding Author

Prof. Zhenfeng Bian

MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234 China

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First published: 21 September 2023
Citations: 13

Graphical Abstract

The photogenerated radicals effectively inhibit metal atom aggregation and facilitate their cooperative anchoring with nitrogen species and lattice oxygen on the support, thereby enabling precise synthesis of Single-atom catalysts.

Abstract

Single-atom catalysts (SACs) have emerged as crucial players in catalysis research, prompting extensive investigation and application. The precise control of metal atom nucleation and growth has garnered significant attention. In this study, we present a straightforward approach for preparing SACs utilizing a photocatalytic radical control strategy. Notably, we demonstrate for the first time that radicals generated during the photochemical process effectively hinder the aggregation of individual atoms. By leveraging the cooperative anchoring of nitrogen atoms and crystal lattice oxygen on the support, we successfully stabilize the single atom. Our Pd1/TiO2 catalysts exhibit remarkable catalytic activity and stability in the Suzuki–Miyaura cross-coupling reaction, which was 43 times higher than Pd/C. Furthermore, we successfully depose Pd atoms onto various substrates, including TiO2, CeO2, and WO3. The photocatalytic radical control strategy can be extended to other single-atom catalysts, such as Ir, Pt, Rh, and Ru, underscoring its broad applicability.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

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