中国物理B ›› 2022, Vol. 31 ›› Issue (7): 77901-077901.doi: 10.1088/1674-1056/ac4e0e

所属专题: TOPICAL REVIEW—Laser and plasma assisted synthesis of advanced nanomaterials in liquids

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Laser fragmentation in liquid synthesis of novel palladium-sulfur compound nanoparticles as efficient electrocatalysts for hydrogen evolution reaction

Guo-Shuai Fu(付国帅), Hong-Zhi Gao(高宏志), Guo-Wei Yang(杨国伟), Peng Yu(于鹏), and Pu Liu(刘璞)§   

  1. State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Materials Science&Engineering, Sun Yat-sen University, Guangzhou 510275, China
  • 收稿日期:2021-11-13 修回日期:2022-01-08 接受日期:2022-01-24 出版日期:2022-06-09 发布日期:2022-07-19
  • 通讯作者: Peng Yu, Pu Li E-mail:yupeng9@mail.sysu.edu.cn;liupu5@mail.sysu.edu.cn
  • 基金资助:
    Project supported by the Natural Science Foundation of Guangdong Province, China (Grant No. 2016A030313339), the Science and Technology Planning Project of Guangdong Province, China (Grant No. 2017B090918002), the National Key Basic Research Program of China (Grant Nos. 2014CB931700 and 2017YFA020623), the National Natural Science Foundation of China (Grant Nos. 51832011 and 91833302), and the Fund from State Key Laboratory of Optoelectronic Materials and Technologies (Grant No. OEMT-2021-PZ-02).

Laser fragmentation in liquid synthesis of novel palladium-sulfur compound nanoparticles as efficient electrocatalysts for hydrogen evolution reaction

Guo-Shuai Fu(付国帅), Hong-Zhi Gao(高宏志), Guo-Wei Yang(杨国伟), Peng Yu(于鹏), and Pu Liu(刘璞)§   

  1. State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Materials Science&Engineering, Sun Yat-sen University, Guangzhou 510275, China
  • Received:2021-11-13 Revised:2022-01-08 Accepted:2022-01-24 Online:2022-06-09 Published:2022-07-19
  • Contact: Peng Yu, Pu Li E-mail:yupeng9@mail.sysu.edu.cn;liupu5@mail.sysu.edu.cn
  • Supported by:
    Project supported by the Natural Science Foundation of Guangdong Province, China (Grant No. 2016A030313339), the Science and Technology Planning Project of Guangdong Province, China (Grant No. 2017B090918002), the National Key Basic Research Program of China (Grant Nos. 2014CB931700 and 2017YFA020623), the National Natural Science Foundation of China (Grant Nos. 51832011 and 91833302), and the Fund from State Key Laboratory of Optoelectronic Materials and Technologies (Grant No. OEMT-2021-PZ-02).

摘要: One promising way to tune the physicochemical properties of materials and optimize their performance in various potential applications is to engineer material structures at the atomic level. As is well known, the performance of Pd-based catalysts has long been constrained by surface contamination and their single structure. Here, we employed an unadulterated top-down synthesis method, known as laser fragmentation in liquid (LFL), to modify pristine PdPS crystals and obtained a kind of metastable palladium-sulfur compound nanoparticles (LFL-PdS NPs) as a highly efficient electrocatalyst for hydrogen evolution reaction (HER). Laser fragmentation of the layered PdPS crystal led to a structural reorganization at the atomic level and resulted in the formation of uniform metastable LFL-PdS NPs. Noteworthy, the LFL-PdS NPs show excellent electrocatalytic HER performance and stability in acidic media, with an overpotential of -66 mV at 10 mA· cm-2, the Tafel slope of 42 mV· dec-1. The combined catalytic performances of our LFL-PdS NPs are comparable to the Pt/C catalyst for HER. This work provides a top-down synthesis strategy as a promising approach to design highly active metastable metal composite electrocatalysts for sustainable energy applications.

关键词: Pd-based electrocatalyst, hydrogen evolution reaction, laser fragmentation in liquid, nanoparticles

Abstract: One promising way to tune the physicochemical properties of materials and optimize their performance in various potential applications is to engineer material structures at the atomic level. As is well known, the performance of Pd-based catalysts has long been constrained by surface contamination and their single structure. Here, we employed an unadulterated top-down synthesis method, known as laser fragmentation in liquid (LFL), to modify pristine PdPS crystals and obtained a kind of metastable palladium-sulfur compound nanoparticles (LFL-PdS NPs) as a highly efficient electrocatalyst for hydrogen evolution reaction (HER). Laser fragmentation of the layered PdPS crystal led to a structural reorganization at the atomic level and resulted in the formation of uniform metastable LFL-PdS NPs. Noteworthy, the LFL-PdS NPs show excellent electrocatalytic HER performance and stability in acidic media, with an overpotential of -66 mV at 10 mA· cm-2, the Tafel slope of 42 mV· dec-1. The combined catalytic performances of our LFL-PdS NPs are comparable to the Pt/C catalyst for HER. This work provides a top-down synthesis strategy as a promising approach to design highly active metastable metal composite electrocatalysts for sustainable energy applications.

Key words: Pd-based electrocatalyst, hydrogen evolution reaction, laser fragmentation in liquid, nanoparticles

中图分类号:  (Laser ablation)

  • 79.20.Eb
81.16.Hc (Catalytic methods) 82.45.Jn (Surface structure, reactivity and catalysis) 61.46.Df (Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots))