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Designing highly efficient and stable electrocatalysts for hydrogen evolution reaction (HER) is critical to the large-scale application of clean hydrogen energy. Herein, NiFe@N-doped graphene microtube (NiFe-NGMT) composites have been synthesized by a facile metal organic framework (MOF) precursor route, and employed as an effective electrocatalyst for HER. The NiFe-NGMT composites, which consist...
The hybrids of FeCo nanocrystals encapsulated in N-doped carbon nanospheres (FeCo–NCNS) supported on thermal reduced graphene oxide (FeCo–NCNS/TRGO) are synthesized by in situ growth of Co2Fe(CN)6 onto graphene oxide (GO), followed with a subsequent pyrolysis process. The as-synthesized products are characterized by transmission electron microscopy, powder X-ray diffraction, Raman spectroscopy, elements...
Reduced graphene oxide (RGO) with different amounts of wrinkling were synthesized in a water–ethylene glycol (EG) system with different volume ratios. The obtained RGO were characterized by X-ray powder diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, scanning and transmission electron microscopy, thermogravimetric analyze, and Brunauer–Emmett–Teller N 2 adsorption–desorption...
A one-pot solvothermal synthesis method was developed to prepare reduced graphene oxide (RGO) supported ferrite (MFe 2 O 4 , M=Mn, Zn, Co and Ni) hybrids using graphite oxide and metal ions (Fe 3+ and M 2+ ) as starting materials. The hybrids were characterized by X-ray powder diffraction, Raman spectra, field emission scanning electron microscopy, energy dispersive...
A phase transfer protocol for graphene oxide (GO) was demonstrated with a long chain alkylamine–dodecylamine (DDA) as phase transfer agent. By this method, GO sheets can be easily transferred from water to various low polar organic solvents such as cyclohexane, petroleum ether, kerosene, toluene, carbon tetrachloride, etc. through forming noncovalent DDA–GO hybrids. The reversible phase transfer of...
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