In Situ Growth of Metallic 1T-MoS₂ on TiO₂ Nanotubes with Improved Photocatalytic Performance

Abstract

1T-MoS2 is in situ grown on TiO2 nanotubes (TNTs) using a hydrothermal method, forming a 1T-MoS2@TNTs composite, which is confirmed by its physical characterization. The prepared composites show enhanced photocatalytic performance for the degradation of tetracycline hydrochloride under visible light, and the improved photocatalytic activity is closely related to the loaded amount of 1T-MoS2. Therein, 0.5 wt % 1T-MoS2@TNTs can degrade 57% in 1 h, which is the highest photocatalytic efficiency observed in experiments so far. It is speculated that the introduction of 1T-MoS2 may optimize light absorption and charge separation/transport. The active species are identified and the reaction mechanism is proposed here.

Rose-inspired 3D 1T-MoS x /Ti3C2T x /TiO2 photocatalyst for water purification

“…In addition, the morphology of 1T-MoS x was detected separately. The HRTEM result of 1T-MoS x in figure 3(e) agrees with the prominent lattice detected by XRD, that is, the main exposed lattice surface of 1T-MoS x is the (002) plane with a lattice spacing of 6.4 Å (theoretically, 0.62 nm experimentally) [44,45]. Through the enlarged HRTEM (figure 3(f)), the lattice arrangement follows the octahedral structure of the 1T metal phase, that is, the connecting lines between the six S atoms and Mo atom are perpendicular to each other, just as shown in the schematic diagram in the lower right corner of figure 3(f).…”

Direct Z-scheme photocatalytic systems based on vdW heterostructures for water splitting and CO2 reduction: fundamentals and recent advances

“…To date, numerous modification strategies have been reported to improve the photocatalytic performance, such as solid solution construction [9] , nanomaterials development [10,11] , morphology control [12,13] , heteroatoms doping [14] , defect engineering [15] , loading cocatalysts [16,17] , constructing heterostructures [18,19] , etc. Among these strategies, mimicking natural photosynthesis by coupling two dissimilar semiconductors to construct a Z-scheme heterostructure is of greater prominence.…”