Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) were successfully used to elucidate the HER process promoted by EDA-CNTs, in which the amide groups were demonstrated to improve the proton adsorption.ĭ.C. Fullerenes, carbon nanotubes (CNTs), graphene and carbon dots (CDs) are the most popular forms and continue to be widely studied. Non covalently functionalized carbon nanotubes have been used as a substrate for the immobilization of a large variety of biomolecules to impart specific recognition properties for the development of miniaturized biosensors as well as designing of novel bioactive nanomaterials. This good HER performance of EDA-CNTs can be resulted from the high electrical conductivity and its high grafting yield to form more amide groups for enhancement of proton adsorption. Carbon-based nanomaterials (CNMs) have attracted considerable attention in the scientific community both from a scientific and an industrial point of view. DETA (0.1 mol, 10.3 g) and Man (0.1 mol, 9. In complex and extreme service environments, static-load-bearing concrete structures may be gradually affected by dynamic loads such as impacts and explosions. Thus, equimolar amounts of unsaturated monomers i.e. First unsaturated monomers with functional groups -NH and -NH 2 were synthesized by the reaction of (Man) and (DETA).
This HER activity of EDA-CNTs is superior or quite comparable to other reported metal-free HER catalysts, while the preparation of this electrocatalyst is simple, quick, and inexpensive. The production of functionalized carbon nanotubes was carried out in two steps. Ethylenediamine-functionalized multiwalled carbon nanotubes (EDA-CNTs) delivered the best HER activity holding a low-onset overpotential of 150 mV, a Tafel slope of 116 mV dec −1, and a Faradaic efficiency ( FE) of 94% with a good stability. The functionalization or immobilization of proteins onto carbon nanotubes is widely considered to be through covalent linkages. Six kinds of functionalized multiwalled carbon nanotubes (FCNTs) with different functional moieties were utilized as metal-free electrocatalysts towards the hydrogen evolution reaction for the first time.
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