نتایج جستجو برای: graphitic carbon nitride
تعداد نتایج: 294191 فیلتر نتایج به سال:
Recently, Exfoliated graphitic carbon nitride (E-gCN) has drawn significant interest in the field of energy generation and storage. In this study, exfoliated nanoflakes are synthesized by condensation followed ultrasonic exfoliation. The supercapative behavior is analyzed. Structural analyses confirm formation thiazine heptazine heterocycles. Scanning electron microscopy image shows flake-like ...
Photocatalytic overall water splitting (OWS) without using any sacrificial reagent to realize H2 and O2 production in the stoichiometric ratio of 2:1 is viewed as “holy grail” field solar fuel production. Developing stable, low cost, nontoxic photocatalysts that have satisfactory solar-to-hydrogen conversion efficiency significance but challenging for realizing large-scale use this sustainable ...
The conformational stability of “melon”, the most commonly observed graphitic carbon nitride (g-CN), is revisited by DFT computations, evidencing close competition among several polymorphs with distinct photophysical properties.
A biomolecule-assisted pyrolysis method has been developed to synthesize sulfur-doped graphitic carbon nitride (CNS) nanosheets. During the synthesis, sulfur could be introduced as a dopant into the lattice of carbon nitride (CN). Sulfur doping changed the texture as well as relative band positions of CN. By growing CN on preformed sulfur-doped CN nanosheets, composite CN/CNS heterojunction nan...
The heptazine-based polymer melon (also known as graphitic carbon nitride, g-C3N4) is a promising photocatalyst for hydrogen evolution. Nonetheless, attempts to improve its inherently low activity are rarely based on rational approaches because of a lack of fundamental understanding of its mechanistic operation. Here we employ molecular heptazine-based model catalysts to identify the cyanamide ...
Photoelectrochemical (PEC) conversion of solar light into chemical fuels is one of the most promising solutions to the challenge of sustainable energy. Graphitic carbon (IV) nitride polymer (g-CN) is an interesting sustainable photocathode material due to low-cost, visible-light sensitivity, and chemical stability up to 500 °C in air. However, grain boundary effects and limited active sites gre...
Novel superhard materials, especially those with superior thermal and chemical stability, are needed to replace diamond. Carbon nitrides (C-N), which are likely to possess these characteristics and have even been expected to be harder than diamond, are excellent candidates. Here we report three new superhard and thermodynamically stable carbon nitride phases. Based on a systematic evolutionary ...
In the pursuit towards the use of sunlight as a sustainable source for energy generation and environmental remediation, photocatalytic water splitting and photocatalytic pollutant degradation have recently gained significant importance. Research in this field is aimed at solving the global energy crisis and environmental issues in an ecologically-friendly way by using two of the most abundant n...
Previous studies have shown that the exfoliation of graphitic carbon nitride (g-C3N4) is essential to obtain materials with good photocatalytic properties. However, in most works influence exfoliation...
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