Stable methylammonium-intercalated 1T′-MoS₂ for efficient electrocatalytic hydrogen evolution

Abstract

Methylammonium-intercalated 1T′-phase MoS2 layered structures exhibit excellent stability as well as high catalytic activity toward the hydrogen evolution reaction.

Edge‐Enriched Ultrathin MoS2 Embedded Yolk‐Shell TiO2 with Boosted Charge Transfer for Superior Photocatalytic H2 Evolution

“…87‐2416) and a morphology analysis of MoS 2 further confirms that the ultrathin MoS 2 was successfully synthesized by the liquid phase exfoliation method (HRTEM and SEM images in Figure S1 of the Supporting Information). The characteristic peaks at 2θ of 13.86°, 33.24°, 39.50°, 48.70°, and 58.68° are assigned to the diffraction from the (002), (100), (102), (106), and (110) planes, respectively . The XRD pattern of the high mass ratio (8.25 wt% MoS 2 ) was recorded in Figure S3c of the Supporting Information, suggesting the presence of MoS 2 in the bulk TiO 2 .…”

Inorganic molecule (O2, NO) adsorption on nitrogen- and phosphorus-doped MoS2 monolayer using first principle calculations

“…[13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] The length of the N-O bond of 1.17Å remains the same as that in the isolated NO molecule in the gas phase, which shows good agreement with the reported values. [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] Here, it is also important to compare the adsorption energy of an NO molecule on a pristine monolayer graphene. The adsorption energies are (À0.03 and À0.12 eV), 41 which is signicantly smaller than that on the pristine MoS 2 monolayer.…”

“…[18][19][20][21] Moreover, various defects can be induced in MoS 2 , as conrmed from previous experiments and theoretical calculations. [22][23][24] Molecular doping at sulfur vacancies can be introduced reliably by electron irradiation, which provides an efficient way to tailor the properties of MoS 2 . 25,26 Therefore, it is very interesting to explore the electronic properties of defective MoS 2 monolayer via the adsorption of gas molecules.…”

Structural‐Phase Catalytic Redox Reactions in Energy and Environmental Applications

“…EC‐HER on Heterophases : Coupling different phases is an effective route to increase the electrical conductivity and increase the effective catalytically active surface area, thereby improving the HER catalytic performance. Kwak and co‐workers have prepared 1T′‐phase‐based MoS 2 nanostructures by means of ammonium (A) and methylammonium (MA) intercalation synthetic methods and evaluated the HER catalytic efficiency of the materials. The authors observed both higher catalytic activity and excellent stability with the MA intercalated 1T′‐MoS 2 nanostructures compared with A‐intercalated 1T′‐MoS 2 .…”