中国物理B ›› 2022, Vol. 31 ›› Issue (6): 67402-067402.doi: 10.1088/1674-1056/ac5604

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Photothermal-chemical synthesis of P-S-H ternary hydride at high pressures

Tingting Ye(叶婷婷)1,2, Hong Zeng(曾鸿)1,2, Peng Cheng(程鹏)1,2, Deyuan Yao(姚德元)1,2, Xiaomei Pan(潘孝美)1,2, Xiao Zhang(张晓)1,3,†, and Junfeng Ding(丁俊峰)1,2,‡   

  1. 1 Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China;
    2 University of Science and Technology of China, Hefei 230026, China;
    3 Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  • 收稿日期:2021-12-02 修回日期:2022-01-27 接受日期:2022-02-17 出版日期:2022-05-17 发布日期:2022-05-19
  • 通讯作者: Xiao Zhang, Junfeng Ding E-mail:xiaozhang@issp.ac.cn;junfengding@issp.ac.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 52002372, 51672279, 51727806, 11874361, and 11774354), Science Challenge Project (Grant No. TZ2016001), and Chinese Academy of Sciences Innovation Grant (Grant No. CXJJ-19-B08).

Photothermal-chemical synthesis of P-S-H ternary hydride at high pressures

Tingting Ye(叶婷婷)1,2, Hong Zeng(曾鸿)1,2, Peng Cheng(程鹏)1,2, Deyuan Yao(姚德元)1,2, Xiaomei Pan(潘孝美)1,2, Xiao Zhang(张晓)1,3,†, and Junfeng Ding(丁俊峰)1,2,‡   

  1. 1 Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China;
    2 University of Science and Technology of China, Hefei 230026, China;
    3 Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2021-12-02 Revised:2022-01-27 Accepted:2022-02-17 Online:2022-05-17 Published:2022-05-19
  • Contact: Xiao Zhang, Junfeng Ding E-mail:xiaozhang@issp.ac.cn;junfengding@issp.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 52002372, 51672279, 51727806, 11874361, and 11774354), Science Challenge Project (Grant No. TZ2016001), and Chinese Academy of Sciences Innovation Grant (Grant No. CXJJ-19-B08).

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摘要： The recent discovery of room temperature superconductivity (283 K) in carbonaceous sulfur hydride (C-S-H) has attracted much interest in ternary hydrogen rich materials. In this report, ternary hydride P-S-H was synthesized through a photothermal-chemical reaction from elemental sulfur (S), phosphorus (P) and molecular hydrogen (H2) at high pressures and room temperature. Raman spectroscopy under pressure shows that H2S and PH3 compounds are synthesized after laser heating at 0.9 GPa, and a ternary van der Waals compound P-S-H is synthesized with further compression to 4.6 GPa. The P-S-H compound is probably a mixed alloy of PH3 and (H2S)2H2 with a guest-host structure similar to the C-S-H system. The ternary hydride can persist up to 35.6 GPa at least and shows two phase transitions at approximately 23.6 GPa and 32.8 GPa, respectively.

关键词: hydride, superconductor, high pressure, Raman spectroscopy

Abstract: The recent discovery of room temperature superconductivity (283 K) in carbonaceous sulfur hydride (C-S-H) has attracted much interest in ternary hydrogen rich materials. In this report, ternary hydride P-S-H was synthesized through a photothermal-chemical reaction from elemental sulfur (S), phosphorus (P) and molecular hydrogen (H2) at high pressures and room temperature. Raman spectroscopy under pressure shows that H2S and PH3 compounds are synthesized after laser heating at 0.9 GPa, and a ternary van der Waals compound P-S-H is synthesized with further compression to 4.6 GPa. The P-S-H compound is probably a mixed alloy of PH3 and (H2S)2H2 with a guest-host structure similar to the C-S-H system. The ternary hydride can persist up to 35.6 GPa at least and shows two phase transitions at approximately 23.6 GPa and 32.8 GPa, respectively.

Key words: hydride, superconductor, high pressure, Raman spectroscopy

中图分类号:  (Superconducting materials other than cuprates)

  • 74.70.-b
78.30.-j (Infrared and Raman spectra) 82.40.Fp (Shock wave initiated reactions, high-pressure chemistry)