Quasi-Single-Layer MoS₂ on MoS₂/TiO₂ Nanoparticles for Anthracene Hydrogenation

Abstract

Developing highly dispersed few stacking layer MoS2 nanocatalysts with high exposure of active sites is still a challenge in improving their catalytic activities. Herein, we report a facile strategy for fabricating quasi-single-layer (<3 layers) MoS2/TiO2 nanocatalysts by a novel one-step hydrothermal method using ammonium tetrathiomolybdate (ATM) and P25 (TiO2) as Mo precursor and highly dispersed supporter, respectively. MoS2 nanosheets on MoS2/TiO2 nanocatalysts with the quasi-single layer and slab of less than 10 nm expose maximum active sites of the catalytic anthracene hydrogenation. The results of the catalytic anthracene hydrogenation in slurry-bed reactor show that the quasi-single-layer MoS2/TiO2 nanocatalyst exhibits optimized catalytic hydrogenation performance with the selectivity to deep hydrogenation product (AH8) of 51% and hydrogenation percentage of 41.4%, which were respectively about 5.7 times and twice those of unsupported MoS2 catalyst. The outstanding catalytic activity of anathracene hydrogenation over the resultant quasi-single-layer MoS2/TiO2 can be ascribed to the superior structures of MoS2/TiO2 nanocatalysts. The uniform loading of quasi-single-layer MoS2 nanosheets onto the TiO2 can remarkably enhance the exposure of active sites and effectively avoid the self-aggregation of MoS2 nanosheets.

Construction of 2D/2D MoS2/g-C3N4 Heterostructures for Photoreduction of Cr (VI)

“…As a typical transition metal sulfide, MoS 2 easily forms a two-dimensional layered structure with each layer of molybdenum atoms sandwiched between two layers of sulfur atoms . MoS 2 possesses high chemical and thermal stability, a large specific surface area, and abundant active sites .…”

“…Using MoS 2 for Cr­(VI) adsorption is a very effective way. However, pure MoS 2 as an adsorbent is limited because easy agglomeration decreased active sites . Therefore, developing a matrix to load MoS 2 would be important to prove the adsorption.…”

Osteogenic differentiation of BMSCs on MoS2 composite nanofibers with different cell seeding densities

“…The elemental mapping results in Fig. 3 show that Mo, S, C and O can be detected in MoS 2 /PAN in which Mo and S are loaded over the nanofibres homogeneously (Wang et al 2019(Wang et al , 2015.…”

Two-Step Facile Preparation of 2D MoS2/ZnO Nanocomposite p - n Junctions with Enhanced Photoelectric Performance

“…In order to meet such application, development of hybrid or heteronanostructures of 2D materials has made it possible to create and enhance multifunctional properties. Several cross-coupled properties, which are weak in single-phase materials, can be realized in the design of novel engineered materials based on hybrid nanostructures including graphene-MoS 2 [17,18], WS 2 -MoS 2 [19,20], MoS 2 -Si [21,22], and MoS 2 -TiO 2 [23,24].…”