High Crystal Quality 2D Manganese Phosphorus Trichalcogenide Nanosheets and their Photocatalytic Activity

Abstract

Transition metal phosphorus trichalcogenides (MPX 3 , X = S, Se) are layered materials possessing high chemical diversity and wide range of applications in a broad wave length spectrum. Theoretical studies reveal that auspicious activity of photocatalytic water splitting can be realized from them. However, experimental efforts have so far been challenged with the synthesis bottleneck. Described herein is the general chemical vapor deposition (CVD) growth method and photocatalytic activity of these materials. A novel route to systematically grow MnPX 3 nanosheets on flexible carbon fiber substrate is reported. The temperature profile of the CVD process is carefully optimized that confer a facile and successful conversion of oxide precursor to phosphotrichalcogenide with high crystallinity. Moreover, the obtained manganesebased phosphorus trichalcogenide nanosheets demonstrate promising activity in sacrificial agent-free photocatalytic water splitting under simulated solar light (AM 1.5G). This study provides a significant stepping stone in exploring the fascinating world of functional 2D materials and pursuing performance enhancement.

Alloy Engineering in Few‐Layer Manganese Phosphorus Trichalcogenides for Surface‐Enhanced Raman Scattering

“…Meanwhile, two A 1g (169 and 216 cm −1 ) and one E g (144 cm −1 ) are also observed in MnPSe 3 . Besides, it can be seen that there exists a E u mode in MnPSe 3 . Based on the results, we can distinguish these few‐layer MnPS 3– x Se x (0 ≤ x ≤ 3) using their different Raman spectra.…”

“…Figure presents the bandgaps of MnPS 3– x Se x . Wherein, the VB of MnPS 3 and MnPSe 3 are at −5.59 and −5.27 eV, respectively . And the CB of them are at −3.21 and −3.46 eV, respectively.…”

“…Besides, it can be seen that there exists a E u mode in MnPSe 3 . [19,24] Based on the results, we Adv. Funct.…”

“…Ternary chalcogenides, as a family of 2D materials, have been investigated in their preparation, [17,18] catalysis, [19,20] magnetic, [21] and spectral studies. [22][23][24] Compared to single or binary element materials, the added new element in ternary materials can tune their physical properties for more applications by changing the compositions.…”

Metall‐Phosphor‐Trichalkogenide (MPCh3): von der Synthese zu aktuellen Energieanwendungen

“…[36,63,64] Als Te ndenz zeigten Studien an MPCh n -Volumenkristallen, dass fürM PSe 3 das Onset-Potential bei À10 mA cm À2 generell geringer war als fürM PS 3 . [36,63,64] Als Te ndenz zeigten Studien an MPCh n -Volumenkristallen, dass fürM PSe 3 das Onset-Potential bei À10 mA cm À2 generell geringer war als fürM PS 3 .…”