中国物理B ›› 2020, Vol. 29 ›› Issue (5): 58104-058104.doi: 10.1088/1674-1056/ab8203

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Prediction of structured void-containing 1T-PtTe2 monolayer with potential catalytic activity for hydrogen evolution reaction

Bao Lei(雷宝), Yu-Yang Zhang(张余洋), Shi-Xuan Du(杜世萱)   

  1. 1 Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China;
    2 CAS Center for Excellence in Topological Quantum Computation, Chinese Academy of Sciences, Beijing 100190, China;
    3 Songshan Lake Materials Laboratory, Dongguan 523808, China
  • 收稿日期:2020-01-05 修回日期:2020-02-25 出版日期:2020-05-05 发布日期:2020-05-05
  • 通讯作者: Shi-Xuan Du E-mail:sxdu@iphy.ac.cn
  • 基金资助:
    Project supported by the National Key R&D Program of China (Grant Nos. 2016YFA0202300, 2018YFA0305800, and 2019YFA0308500), the National Natural Science Foundation of China (Grant Nos. 61888102, 51872284, and 51922011), and the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB30000000).

Prediction of structured void-containing 1T-PtTe2 monolayer with potential catalytic activity for hydrogen evolution reaction

Bao Lei(雷宝)1, Yu-Yang Zhang(张余洋)1,2, Shi-Xuan Du(杜世萱)1,2,3   

  1. 1 Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China;
    2 CAS Center for Excellence in Topological Quantum Computation, Chinese Academy of Sciences, Beijing 100190, China;
    3 Songshan Lake Materials Laboratory, Dongguan 523808, China
  • Received:2020-01-05 Revised:2020-02-25 Online:2020-05-05 Published:2020-05-05
  • Contact: Shi-Xuan Du E-mail:sxdu@iphy.ac.cn
  • Supported by:
    Project supported by the National Key R&D Program of China (Grant Nos. 2016YFA0202300, 2018YFA0305800, and 2019YFA0308500), the National Natural Science Foundation of China (Grant Nos. 61888102, 51872284, and 51922011), and the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB30000000).

摘要: Two-dimensional (2D) transition metal dichalcogenides (TMDs) have attracted considerable attention because of their unique properties and great potential in nano-technology applications. Great efforts have been devoted to fabrication of novel structured TMD monolayers by modifying their pristine structures at the atomic level. Here we propose an intriguing structured 1T-PtTe2 monolayer as hydrogen evolution reaction (HER) catalyst, namely, Pt4Te7, using first-principles calculations. It is found that Pt4Te7 is a stable monolayer material verified by the calculation of formation energy, phonon dispersion, and ab initio molecular dynamics simulations. Remarkably, the novel structured void-containing monolayer exhibits superior catalytic activity toward HER compared with the pristine one, with a Gibbs free energy very close to zero (less than 0.07 eV). These features indicate that Pt4Te7 monolayer is a high-performance HER catalyst with a high platinum utilization. These findings open new perspectives for the functionalization of 2D TMD materials at an atomic level and its application in HER catalysis.

关键词: first-principles calculations, structured PtTe2 monolayer, void-containing materials, HER catalyst

Abstract: Two-dimensional (2D) transition metal dichalcogenides (TMDs) have attracted considerable attention because of their unique properties and great potential in nano-technology applications. Great efforts have been devoted to fabrication of novel structured TMD monolayers by modifying their pristine structures at the atomic level. Here we propose an intriguing structured 1T-PtTe2 monolayer as hydrogen evolution reaction (HER) catalyst, namely, Pt4Te7, using first-principles calculations. It is found that Pt4Te7 is a stable monolayer material verified by the calculation of formation energy, phonon dispersion, and ab initio molecular dynamics simulations. Remarkably, the novel structured void-containing monolayer exhibits superior catalytic activity toward HER compared with the pristine one, with a Gibbs free energy very close to zero (less than 0.07 eV). These features indicate that Pt4Te7 monolayer is a high-performance HER catalyst with a high platinum utilization. These findings open new perspectives for the functionalization of 2D TMD materials at an atomic level and its application in HER catalysis.

Key words: first-principles calculations, structured PtTe2 monolayer, void-containing materials, HER catalyst

中图分类号:  (Catalytic methods)

  • 81.16.Hc
31.15.A- (Ab initio calculations) 68.65.-k (Low-dimensional, mesoscopic, nanoscale and other related systems: structure and nonelectronic properties) 14.60.Cd (Electrons (including positrons))