Highly Ordered Mesoporous Crystalline MoSe₂ Material with Efficient Visible‐Light‐Driven Photocatalytic Activity and Enhanced Lithium Storage Performance

Abstract

Highly ordered mesoporous crystalline MoSe2 is synthesized using mesoporous silica SBA‐15 as a hard template via a nanocasting strategy. Selenium powder and phosphomolybdic acid (H3PMo12O40) are used as Se and Mo sources, respectively. The obtained products have a highly ordered hexagonal mesostructure and a rod‐like particle morphology, analogous to the mother template SBA‐15. The UV‐vis‐NIR spectrum of the material shows a strong light absorption throughout the entire visible wavelength region. The direct bandgap is estimated to be 1.37 eV. The high surface area MoSe2 mesostructure shows remarkable photocatalytic activity for the degradation of rhodamine B, a model organic dye, in aqueous solution under visible light irradiation. In addition, the synthesized mesoporous MoSe2 possess a reversible lithium storage capacity of 630 mAh g−1 for at least 35 cycles without any notable decrease. The rate performance of mesoporous MoSe2 is much better than that of analogously synthesized mesoporous MoS2, making it a promising anode for the lithium ion battery.

Metal−Organic Framework‐Derived Nitrogen‐Doped Core‐Shell‐Structured Porous Fe/Fe3C@C Nanoboxes Supported on Graphene Sheets for Efficient Oxygen Reduction Reactions

“…After the addition of methanol (inset of Figure 4 f), except for a slight oscillation, no noticeable change is observed in the ORR current on the hybrid, suggesting a great tolerance to crossover effect. [ 39 ] However, the ORR current of the commercial Pt/C catalyst significantly decreases after methanol injection due to the methanol oxidation reaction. [ 40 ] The results confi rm the hybrid not only has a higher catalytic selectivity toward ORR, but also exhibits excellent stability (Figure 4 f).…”

A general method to diverse silver/mesoporous–metal–oxide nanocomposites with plasmon-enhanced photocatalytic activity

“…The photocatalytic degradation of the organic pollutants occurs generally in the sequence of diffusion, adsorption, surface reaction, and final desorption, and each of these elementary processes affects the reaction rate. The large surface area and pore volume in the MMO materials offered more opportunity for the diffusion and adsorption of pollutant molecules and hydroxyl radicals during the photocatalytic reaction [1,2]. Moreover, both the large surface area and the good crystallinity in a continuous structure can be expected to make the electron transfer within the material easier, resulting in higher activity [6].…”

“…Mesoporous materials have attracted considerable attention for their broad applications in catalysis [1,2], energy conversion and storage [3][4][5][6], sensors [7][8][9], and so on, due to their large surface areas, tunable pore sizes and shapes, various structures, multitude of compositions, and ease of functionalization [6,10]. Mesoporous metal oxide (MMO) semiconductors are gaining popularity for photocatalytic applications due to their large specific surface area in a continuous structure instead of discrete particles [11][12][13].…”

Design and synthesis of W-containing mesoporous material with excellent catalytic activity for the oxidation of 4,6-DMDBT in fuels

“…Mesoporous catalysts have received a great deal of attention and have been used in adsorptive desulfurization and catalytic systems owing to their unique characteristics, such as large specific surface area, high stability and easy to regeneration [35][36][37][38][39]. There are many kinds of mesoporous materials, Zhao and his team had reported a lot of work about ordered mesoporous materials [40,41] and applied in catalytic field [42][43][44]. Liu et al had designed and synthesized a series of mesoporous materials based on MCM-48 and SBA-15 and applied in the ADS systems successfully.…”