Molecular level distribution of black phosphorus quantum dots on nitrogen-doped graphene nanosheets for superior lithium storage

Stable Confinement of Black Phosphorus Quantum Dots on Black Tin Oxide Nanotubes: A Robust, Double‐Active Electrocatalyst toward Efficient Nitrogen Fixation

“…[25] Moreover,adark-field scanning transmission electron microscopy (STEM) image of aB P@SnO 2Àx nanotube is provided in the Supporting Information, Figure S12, and the corresponding elemental maps reveal the homogeneous distribution of phosphorus element on the surface the SnO 2Àx nanotube. [17] This result further confirms the hybridization of the BP QDs on the SnO 2Àx nanotubes. Figure 2d shows awide-scan XPS spectrum of the BP@SnO 2Àx nanotubes,which recognizes the existence of tin, oxygen, and phosphorus elements.A ccording to this survey, the content of phosphorus in the BP@SnO 2Àx nanotubes is calculated to be 36.26 wt %( Supporting Information, Table S1).…”

“…TheB PQ Ds were synthesized by sonication-assisted liquid-phase exfoliation followed by high-speed centrifugation, as reported by us previously. [17] Ar epresentative TEM image is given in the Supporting Information, Figure S11, which reveals al ot of dot-like entities with ad iameter of 5nm. To confine the BP QDs on the SnO 2Àx nanotubes, they were mixed in tetrahydrofuran (THF) under sonication.…”

“…Figure 2e shows the Sn 3d spectrum, in which the Sn 3d 3/2 and Sn 3d 5/2 orbitals are situated at 495.5 and 487.1 eV,u p-shifting by 1.1 eV compared to those of SnO 2Àx .Asfor the P2pspectrum (Figure 2f), the P2p 1/2 and P2p 3/2 orbitals down-shift from 130.6 and 130.0 eV to 130.4 and 129.5 eV. [17] It is known that such shifts in the binding energy mean altered electron density and electron screening effect, which originate from robust interactions between the two components at the interface. [26] Besides,t he peak at 134.0 eV comes from oxidized phosphorus which was generated during the synthesis of the BP QDs.…”

Construction of Ag/WS2 Zero/Two‐Dimensional Hybrid Architectures by Self‐Assembly for High‐Rate Lithium Storage

“…As far as we know, there are very limited studies on the assembling of the WS 2 nanosheets with NPs through solvothermal synthesis arising from their chemical inertness due to the lack of oxygen moieties. Very recently, we have developed a novel approach for the selfassembly of NPs on different 2D substrates, such as pristine graphene, [16] metal carbides, [17] metal oxides, [14a,18] metal chalcogenides, [2a,19] and h-BN, [20] on the basis of van der Waals interactions. In this work, the WS 2 nanosheets were exfoliated in water by ultrasound, followed by transferring to a poor solvent, tetrahydrofuran (THF).…”

“…In this work, the WS 2 nanosheets were exfoliated in water by ultrasound, followed by transferring to a poor solvent, tetrahydrofuran (THF). According to Hansen's solubility parameter theory, [16] these nanosheets have a huge surface energy in THF. Therefore, the organic modified Ag NPs can spontaneously organized on the exposed WS 2 nanosheets to form the lowsurface-energy Ag/WS 2 micelle-structure through van der Waals interactions, as soon as the former are introduced.…”