Hybrid phase 1T/2H-MoS2 with controllable 1T concentration and its promoted hydrogen evolution reaction. Issue 22 (29th May 2020)

• Record Type: Journal Article
• Authors: Zhang, Yuxiao; Kuwahara, Yasutaka; Mori, Kohsuke; Louis, Catherine; Yamashita, Hiromi
• Is Part Of: Nanoscale. Volume 12:Issue 22(2020)
• Page Start: 11908
• Page End: 11915
• Publication Date: 2020-05-29
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/d0nr02525a
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : 1T concentration controllable 1T/2H-MoS2 with enhanced electrochemical hydrogen evolution reaction performance has been synthesized. Abstract : MoS2 has been investigated as a low-cost alternative to Pt in the electrochemical hydrogen evolution reaction. One of the promising methods to further activate MoS2 is phase engineering. MoS2 generally exhibits two kinds of crystalline phases: hexagonal 2H phase and octahedral 1T phase. 1T-MoS2 exhibits much better chemical/physical properties than natural semiconductor 2H-MoS2 . However, 1T-MoS2 is metastable and its synthesis is still a challenge. Hybrid 1T/2H-MoS2 has been synthesized under relatively mild conditions, but controlling the 1T/2H ratio is still an issue which has not been discussed in detail. In this study, the synthesis methods of hybrid phase 1T/2H-MoS2 with controllable 1T concentration are investigated. The electrochemical hydrogen evolution reaction is then evaluated for 1T/2H-MoS2 with different 1T concentrations by performing both experiments and theoretical calculations.