A novel method for the synthesis of MoSSe using an (EtN)[MoSSeBr] complex as the sole precursor

• Published in: Dalton transactions : an international journal of inorganic chemistry 2024-09, Vol.53 (37), p.15638-15647
• Main Authors: Tran, Dang B, Le, Ly T, Nguyen, Duc N, Nguyen, Quyen T, Nga, Ta Thi Thuy, Chou, Wu-Ching, Luc, Hoang H, Dong, Chung-Li, Tran, Phong D
• Format: Article
• ISSN: 1477-9226; 1477-9234
• DOI: 10.1039/d4dt02016b

MoSSe is a semiconducting material with a layered structure similar to MoS 2 and MoSe 2 , which shows potential applications in optoelectronics, solar cells, sensing, and catalysis. Synthesis of this material with a controllable structure and chemical composition represents a great challenge. Herein, we report a new method for the synthesis of MoSSe by employing an [Et 4 N] 2 [Mo 3 S 4 Se 3 Br 6 ] complex as the sole precursor. Thermal annealing of this complex under an Ar atmosphere at moderate temperatures ranging from 350 °C to 650 °C resulted in the formation of pure MoSSe. The morphology and structure of MoSSe were characterized using SEM, HRTEM, XRD, Raman spectroscopy, X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS). The effects of annealing temperature on the structure of MoSSe were also examined. Thermal decomposition of an (Et 4 N) 2 [Mo 3 S 4 Se 3 Br 6 ] precursor under an inert atmosphere produces an alloy MoSSe material with a precise chemical composition.