Exfoliated MoO3 nanosheets for high-capacity lithium storage

Self‐Assembly Approach for Synthesis of Nanotubular Molybdenum Trioxide/Titania Composite Anode for Lithium‐Ion Batteries

“…The band observed at 820 cm −1 is assigned to the symmetrical stretching vibration of the Mo 2 −O bond (A g /B 1g ), which relates to the corner‐sharing oxygen atom in the two MoO 6 octahedrons . The band at 993 cm −1 is ascribed to the asymmetric stretching vibration of the terminal Mo=O bond (A g /B 1g ) . For the control samples of MoO 3 flakes and MoO 3 powders, typical Raman spectroscopic features that correspond to orthorhombic molybdenum trioxide were observed (Figure S2 b in the Supporting Information); these agree well with the results in Figure b, which indicate the formation of the α‐MoO 3 phase in the nanotubular MoO 3 /TiO 2 composites fabricated by the LbL self‐assembly approach.…”

Intercalation assembly of Li3VO4 nanoribbons/graphene sandwich-structured composites with enhanced oxygen reduction catalytic performance

“…For example, other 2D "graphene-like" nanosheets or nanoribbons with a thickness of less than 5 nm and lateral dimension of submicron to micrometers such as layered transition metal chalcogenides (MoS 2 , WS 2 , TiSe 2 , Bi 2 Se 3 ) [29][30][31], metal carbides (Ti 3 C 2 ,Ti 2 C, Ta 4 C 3 ) [32], nitride (BN) [33], oxides (MoO 3 , V 2 O 5 , MnO 2 ) [34][35][36] and double hydroxides systems (Ni-Fe, Co-Mn, Co-Al LDHs) [37][38][39], have been widely adopted in the important fields of sensing, catalysis, and energy storage applications [40][41][42]. Generally, although the bulk counterparts of the aforementioned nanoribbons or nanosheets have the typical layer structures, the exfoliation procedure always brought about an extremely low product yield due to the limitations of the fabrication method.…”

Tuning the interlayer of transition metal oxides for electrochemical energy storage

“…In this regard, the methods of modifying the interlayer described above have all been utilized as a means to expand the interlayer spacing of layered oxides, which decreases the force needed to pull apart the layers into nanosheets. The applied force can be mechanical, 100 acoustic, 101 thermal, 102 or a combination of these.…”

“…As noted previously, MoO 3 forms both hydrous and anhydrous layered polymorphs and it is a good precursor material for the synthesis of nanosheets. Bulk crystalline MoO 3 can be exfoliated by sonicating a dispersion of the oxide in a solution of water and isopropanol 101 ; the mechanism of exfoliation is the intercalation of isopropanol between MoO 3 layers and subsequent application of acoustic energy in the form of sonication. Hanlon et al 105 synthesized MoO 3 nanosheets via liquid-phase exfoliation that consisted of sonicating MoO 3 in isopropanol.…”