CO 2 -assisted fabrication of novel heterostructures of h-MoO 3 /1T-MoS 2 for enhanced photoelectrocatalytic performance

Photoelectrochemical Hydrogen Evolution and CO2 Reduction over MoS2/Si and MoSe2/Si Nanostructures by Combined Photoelectrochemical Deposition and Rapid-Thermal Annealing Process

“…For HER of nanoflowers-like MoS 2 and MoSe 2 materials on GC electrodes in 0.5 M H 2 SO 4 , Ravikumar et al reported that the activity (11 mA/cm 2 at 0.3 V vs RHE) of MoSe 2 showed a higher than that (7 mA/cm 2 at 0.3 V vs RHE) of MoS 2 , attributed to higher electrical properties and defects [50], in good consistent with the present result. Evidently, based on the DOS near the Fermi level as discussed in Figure 3, the enhanced electronic conductivity could play an important role in HER and CO 2 reduction performances [22]. Because the Gibbs free energy is also known to be dependent on morphology (e.g., defects and edge sites) the catalyst fabrication methods is important for improving a catalyst activity.…”

“…Consequently, the HER activity was found to be substantially increased. Zhu et al fabricated h-MoO 3 /1T-MoS 2 heterostructures and tested photoelectrocatalytic HER activity to show better activity compared with those of 1T@2H-MoS 2 and α-MoO 3 /MoS 2 [22]. A two-step (MoO 3 + H 2 → MoO 2 and MoO 2 + Se vapor → MoSe 2 ) chemical vapor deposition (CVD) process was employed to fabricate vertically aligned core-shell MoO 2 /MoSe 2 nanosheet arrays which showed better HER activity than those of MoO 2 and MoSe 2 [23].…”

CO2‐Assisted Conversion of Crystal Two‐Dimensional Molybdenum Oxide to Amorphism with Plasmon Resonances

“…2018, 24,13693 -13700 www.chemeurj.org Concept locally patterned on the 1T-MoS 2 to form the novel heterostructures with its hydrophilic feature, which displays strong LSPR peak in the visible and near-IR. [29] The enhanced photoelectrochemical performanceo ft he as-prepared heterostructured materialh as been demonstrated. Under hight emperature and pressure conditions, an acidifying effect resulting from CO 2 dissolvingi nt he water can help the formation of doped hexagonal molybdenum oxide with plasmon resonance.…”

Building Close Ties Between CO2 and Functional Two‐Dimensional Nanomaterials with Green Chemistry Strategy

“…On the basis of the CO 2 ‐assisted exfoliation and phase transition of layered materials, Zhu et al have successfully prepared the h‐MoO 3 /1T‐MoS 2 heterostructures ( Figure ). In this work, the strong acid environment caused by the dissolved CO 2 molecules and the formed H 2 SO 4 plays a key role in the built of special heterostructures, which can enable the dissolution of MoO 3 nanosheets.…”

“…b,c) Filtered images and corresponding fast Fourier transfer (FFT) of 1T‐MoS 2 and h‐MoO 3 , respectively. Reprinted from reference[]. Copyright 2017, Elsevier Ltd.…”