MoSe2-WS2 Nanostructure for an Efficient Hydrogen Generation under White Light LED Irradiation

Abstract

In this work, MoSe2-WS2 nanocomposites consisting of WS2 nanoparticles covered with few MoSe2 nanosheets were successfully developed via an easy hydrothermal synthesis method. Their nanostructure and photocatalytic hydrogen evolution (PHE) performance are investigated by a series of characterization techniques. The PHE rate of MoSe2-WS2 is evaluated under the white light LED irradiation. Under LED illumination, the highest PHE of MoSe2-WS2 nanocomposite is 1600.2 µmol g−1 h−1. When compared with pristine WS2, the MoSe2-WS2 nanostructures demonstrated improved PHE rate, which is 10-fold higher than that of the pristine one. This work suggests that MoSe2-WS2 could be a promising photocatalyst candidate and might stimulate the further studies of other layered materials for energy conversion and storage.

Electrochemical Detection of Melphalan in Biological Fluids Using a g-C3N4@ND-COOH@MoSe2 Modified Electrode Complemented by Molecular Docking Studies with Cellular Tumor Antigen P53

“…MoSe 2 shows a hexagonal structure and characteristic peaks at 31.42, 37.88, and 55.92° (JCPDS No. 29-0914). ,, In addition, no significant peak is observed due to the weak crystal structure of MoSe 2 in the composites. XRD patterns seem to be in good agreement with the literature data.…”

“…29-0914). 33,46,47 In addition, no significant peak is observed due to the weak crystal structure of MoSe 2 in the composites. XRD patterns seem to be in good agreement with the literature data.…”

Enhanced Photocatalytic Activity in 2D‐1D WS2/TiO2 and 2D‐2D MoS2/WS2 Heterosystems

“…The band at 572 cm −1 attributed to W−S bonds while the band at 965 cm −1 corresponds to S−S bonds in WS 2 nanosheets. The circled band at 717.45 cm −1 ,1080.5 cm −1 ,1154 cm −1 ,1459 cm −1 and 1542.09 cm −1 corresponds to MoS 2 [31,32] . The band at 717 cm − 1 and 1154 cm −1 are characteristic bands of Mo−S and S−S bonds [33] .…”

“…The circled band at 717.45 cm À 1 ,1080.5 cm À 1 ,1154 cm À 1 ,1459 cm À 1 and 1542.09 cm À 1 corresponds to MoS 2 . [31,32] The band at 717 cm À 1 and 1154 cm À 1 are characteristic bands of MoÀ S and SÀ S bonds. [33] The shift towards a higher wavenumber is due to a decrease in the mass during the formation of the interface.…”

MgAl2O4@MoSe2 Nanocomposite For Micro Solid-Phase Extraction Of Traces Bismuth From Food, Water, And Cosmetic Samples Prior To Quantitation By FAAS

“…The signals at 3450 and 2903 cm −1 can be linked to the stretching vibrations of Mo-Se and hydroxyl groups within the MgAl2O4@MoSe2 nanocomposite. 47,48 Figure 2b displays the XRD diagrams of MgAl2O4 and MgAl2O4@MoSe2. The distinctive diffraction peaks attributed to the Bragg reflections from planes like (111), ( 220), (311), ( 222), (400), ( 422), ( 511), ( 440), ( 533), (444), and (551) aligned with the well-known standard spinel arrangement of MgAl2O4 (as per JCPDS Card No.…”