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In this work, two new types of structurally stable two-dimensional (2D) carbon nitrides are predicted by first-principles calculations. They are derived by extracting two adjacent atomic layers from cubic diamond or hexagonal diamond and then substituting the unsaturated C atoms with N atoms. The formed 2D diamond-like carbon nitrides are named as 2D c-C2N2 and 2D h-C2N2. First-principles calculations...
Electron-withdrawing 4-cyanophenyl-, electronically innocent phenyl-, and electron-donating 4-dimethylaminophenyl-functionalized porphyrin/single-walled carbon nanotube (SWCNT) nanohybrids have been synthesized and characterized by ultraviolet–visible absorption, steady-state fluorescence, Fourier transform infrared, and Raman spectroscopies, X-ray photoelectron spectroscopy, scanning electron microscopy,...
Carbon fiber reinforced composites have been accepted as a newly-developing structural material widely used in the automotive and aerospace industries owing to its lightweight and good mechanical performances. The growth of carbon nanotubes (CNTs), catalyzed by metal nanoparticles, on the fiber surface is a promising way to mitigate the stress concentration around the fibers but requires strong bonds...
TiO2/reduced graphene oxide (RGO) nanocomposites Gx (RGO titania nanocomposite, x grams tetrabutyl titanate per 0.03g RGO, x=0.25, 0.50, 1.00) were prepared by a hydrothermal method: graphene oxide was reduced to RGO in a 2:1 water:ethanol mixture in the presence of varying quantities of tetrabutyl titanate, which deposited as TiO2 on the RGO sheets. The nanocomposites were characterized by a combination...
Carbon dots (CDs) as a class of heavy-metal-free fluorescent nanomaterials has drawn increasing attention in recent years due to their high optical absorptivity, chemical stability, biocompatibility, and low toxicity. Herein, we report a facile method to prepare stable CDs by hydrothermal treatment of glucose (glc) in the presence of glutathione (GSH). With this approach, the formation and the surface...
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