Graphitic carbon nitride (g-C3N4) used in this work was obtained by heating dicyandiamide and melamine, respectively, at different temperatures. The differences of g-C3N4 derived from different precursors in phase composition, functional group, surface morphology, microstructure, surface property, band gap and specific surface area were investigated by X-ray diffraction, Fourier transform infra...

A noble-metal-free photocatalytic H2 production system consisting of a Ni-based catalyst, visible-light-responsive organic dye, and graphitic carbon nitride (g-C3N4) as a support has been developed. Characterization by means of XAFS revealed that the deposition of a trinuclear Ni precursor complex, Ni(NiL2)2Cl2 (L = β-mercaptoethylamine), on the g-C3N4 affords a monomeric Ni(ii) species involvi...

A high rate of 2.23 mmol h(-1) g(-1) (quantum efficiency of 6.67% at 400 nm) for visible light driven photocatalytic H2 evolution can be achieved with g-C3N4 by alkalization of the solution to a pH of 13.3, due to accelerated transfer of photoholes to the sacrificial donor.

Polyvinylidene fluoride (PVDF)/g-C3N4/Chitosan thin film membranes were prepared by immersing of PVDF/g-C3N4 membrane in solution containing various concentrations chitosan for removal Direct Blue 14 dye (an anionic dye) from aqueous solutions. The resulting characterized XRD, FESEM, TEM and AFM. Also, pure water flux, salt rejection, content antifouling properties investigated. demonstrate tha...

An efficient membrane for helium separation from natural gas is quite crucial for cryogenic industries. However, most experimentally available membranes fail in separating helium from small molecules in natural gas, such as H2, as well as in 3He/4He isotopes separation. Using first-principles calculations, we theoretically demonstrated that the already-synthesized graphitic carbon nitride (g-C3...

The volume of dye production in the chemical industry is growing rapidly every year. Given global importance clean water resources, new wastewater treatment solutions are required. Utilizing photocatalysis by harvesting solar energy represents a facile and promising solution for removing dangerous pollutants. This study reports possibility increasing photocatalytic activity g-C3N4 creating nano...

Constructing a hierarchical structure with tunable pore size is practical method to improve the capacity of photocatalytic hydrogen production catalysts. In this work, titanium dioxide/graphitic carbon nitride (TiO2/g-C3N4) nanofibers meso/macro-porous are fabricated by combining one-step electrospinning and calcination process, in which developed introducing polyvinylpyrrolidone liquid paraffi...

Photocatalytic water splitting with simultaneous degradation of organic pollutants is an effective strategy to alleviate the increasingly serious energy and environmental crisis. However, photocatalytic activity restricted by high charge recombination rate limited sunlight utilization. Herein, black phosphorus (BP) a broad response range was utilized as photosensitizer enhance performance Au/ca...

Photocatalysis has been vastly applied for the removal of contaminants emerging concern (CECs) and other micropollutants, with aim future water reclamation. As a process based upon photon irradiation, materials that may be activated through natural light sources are highly pursued, to facilitate their application reduce costs. TiO2 is reference material, it greatly optimized. However, in its ty...

In this study, the morphological properties of g-C3N4 in g-C3N4-Pt photocatalysts were modified by a simple hydrothermal treatment for photocatalytic hydrogen evolution. addition, modification effect on evolution performance was investigated. The long-time clearly changed morphology building extended melem units with more oxygen functional groups at defect edges units, which evidenced X-ray dif...