Volume 21, Issue 24 2502856
Research Article

Reusable Te-Doped Sn-P-I Catalysts With Anti-Healing P Vacancies and Stable I Sites for Efficient Black Phosphorus Growth

Junping Zhao

Junping Zhao

Faculty of Chemical Engineering, Kunming University of Science and Technology, Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials, Yunnan Technological Innovation Center of Phosphorus Resources, Kunming, 650600 China

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Pengwei Zhao

Pengwei Zhao

School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering; Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin, 300072 China

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Yan Zhang

Yan Zhang

Faculty of Chemical Engineering, Kunming University of Science and Technology, Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials, Yunnan Technological Innovation Center of Phosphorus Resources, Kunming, 650600 China

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Wenyue Dong

Wenyue Dong

Faculty of Chemical Engineering, Kunming University of Science and Technology, Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials, Yunnan Technological Innovation Center of Phosphorus Resources, Kunming, 650600 China

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Xiaobin Fan

Xiaobin Fan

School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering; Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin, 300072 China

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Delong Xie

Delong Xie

Faculty of Chemical Engineering, Kunming University of Science and Technology, Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials, Yunnan Technological Innovation Center of Phosphorus Resources, Kunming, 650600 China

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Yuanzhi Zhu

Corresponding Author

Yuanzhi Zhu

Faculty of Chemical Engineering, Kunming University of Science and Technology, Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials, Yunnan Technological Innovation Center of Phosphorus Resources, Kunming, 650600 China

E-mail: [email protected]; [email protected]

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Yi Mei

Corresponding Author

Yi Mei

Faculty of Chemical Engineering, Kunming University of Science and Technology, Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials, Yunnan Technological Innovation Center of Phosphorus Resources, Kunming, 650600 China

E-mail: [email protected]; [email protected]

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First published: 02 May 2025

Abstract

Black phosphorus (BP) holds significant potential for various applications, but its widespread use requires the development of efficient and cost-effective preparation methods. Sn-P-I clathrates are identified as potential catalysts for BP growth; however, the intact Sn-P-I structure leads to prolonged preparation times, rapid deactivation, and an unclear catalytic mechanism. In this study, a Te-doping strategy is proposed to simultaneously improve the activity and stability of Sn-P-I catalysts. Te doping induces the formation of Sn─Te bonds, creates intrinsic anti-healing phosphorus vacancies, while also mitigates iodine loss due to the lower electronegativity of Te compared to P. This doping changes the deactivation mechanism of the Sn-I-P from phosphorus saturation to iodine loss in the Te-doped Sn-I-P. To further improve catalyst reusability, an iodination treatment is introduced to reactivate the Te-Sn-P-I catalysts. The optimized Te-Sn-P-I catalyst reduced the reaction time for BP synthesis from 15 h to just 45 min, achieving a BP yield of 96.7%. The reactivation process restores 100% of the catalytic performance.

Conflict of Interest

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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