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Mo2C@NC@MoSx porous nanospheres with sandwich shell have been synthesized for efficient hydrogen evolution in both acidic and alkaline media. Firstly, porous MoO2-Mo2C@NC nanospheres have been obtained with ultrafine Mo2C nanocrystallines as core and ultrathin N-doped carbon (NC) as shell through the carbonization of MoO42--/aniline-pyrrole (MoO42--Polymer) as precursor. Secondly, Mo2C@NC@MoSx porous...
We theoretically predict and numerically simulate the discrete plasmonic Talbot effect in dielectric graphene plasmonic waveguide (DGPW) arrays at THz wavelengths. The super-modes in DGPW arrays are analyzed by using super-mode theory and the field intensity distributions in the designed DGPW arrays are explained by the superposition of different super-modes and simulated by using commercial software...
Designing the low cost, long durability and high efficient substitutes for platinum (Pt) electrocatalyst to facilitate ORR is significant for the large-scale commercial application of fuel cells. In this work, single Pd atoms supported on graphitic carbon nitride (i.e., Pd/g-C3N4) with different Pd coverages acting as electrocatalyst for ORR is investigated by using the density functional theory calculations...
As one of the potential candidates of electrocatalysts, non-precious transition metal and nitrogen embedded graphene has attracted extensive attention in recent years. Deep understanding of the oxygen reduction reaction (ORR) mechanism including the specific active sites and reaction pathways will contribute to the further enhancement of their catalytic activity. In this work, density functional study...
We theoretically predict self-imaging induced by multi-mode interference in multi-walled carbon nanotube arrays at visible wavelengths. To obtain propagation constants of guided modes and positions of self-imaging, the dispersion relation based on a dielectric function of frequency of the designed multi-walled carbon nanotube arrays is analyzed. The field distribution of self-imaging is performed...
The reaction mechanisms for oxygen reduction reaction (ORR) on phosphorus doped divacancy graphene (P-GDV) are investigated by using the density functional theory method. Our results showed that all of the possible ORR elementary reactions could take place within a small region around the P atom and its adjacent four carbon atoms. The hydrogenation of O2 molecule which forms OOH and hydrogenation...
A hybrid material consisting of an activated carbon powder (50–80 mesh) trapped in 8μm Ni-microfibers was prepared using standard wet layer paper-making/sintering and impregnation procedures. This was used together with a granular Cu–Zn–Mo–Ag–triethylenediamine impregnated carbon to purify air contaminated with hydrogen cyanide (HCN). This combination of materials improves HCN removal efficiency from...
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