Fig. 3: Phase transition from 1T to 2H. | Nature Communications

Fig. 3: Phase transition from 1T to 2H.

From: One-step synthesis of single-site vanadium substitution in 1T-WS2 monolayers for enhanced hydrogen evolution catalysis

Fig. 3

a Raman spectra of V2O3 film (black), V SACs@1T-WS2/V2O3 (orange), and 2H-WS2 (blue). b PL spectra of V2O3 film (black), V SACs@1T-WS2/V2O3 (orange), and 2H-WS2 (blue). c High-resolution XPS spectra of W 4f (left) and S 2p (right) core level peak regions for 2H and 1T phase, respectively. The fitting blue and pink curves represent the contributions of 1T and 2H phases, respectively. d Schematic representation of the 1T to 2H structural phase transition occurring upon thermal annealing. e Raman spectra of 2H-WS2, V SACs@1T-WS2, and V SACs@1T-WS2 with different annealing temperatures in H2/Ar for 2 h.

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