Platinum (Pt) nanoparticles with <4 nm diameter loaded on graphitic carbon nitride (g-C3N4) by reduction at 673 K behave as efficient co-catalysts for photocatalytic hydrogen evolution under visible light (λ >420 nm). This is achieved by strong Pt-support interaction due to the high temperature treatment, which facilitates efficient transfer of photoformed conduction band electrons on g-C3N4 to...

A plasmonic photocatalyst of AgBr/BiPO4/g-C3N4 was prepared. X-ray powder diffraction, Scanning electron microscope, Transmission microscopy, Fourier infrared spectroscopy, Ultraviolet Visible diffuse reflectance spectroscopy and photoluminescence emission spectra have been employed to determine the structure, morphology optical property as-prepared composite analysis reasons for improving phot...

We report a new and effective method to prepare high activity graphitic carbon nitride (g-C3N4) by a simple ammonia etching treatment. The obtained g-C3N4 displays a high BET surface area and enhanced electron/hole separation efficiency. The hydrogen evolution rates improved from 52 μmol h(-1) to 316.7 μmol h(-1) under visible light.

Graphitic carbon nitride (g-C3N4) quantum dots (CNQDs) were prepared from bulk g-C3N4 directly by a thermal-chemical etching process. The CNQDs show strong blue emission as well as upconversion behavior, which can be used as universal energy-transfer components in visible-light-driven metal-free photocatalytic systems.

Volatile organoamines are important industrial raw materials and chemicals. Long-term exposure to amines could be harmful human health even cause serious pollution. In this study, SnO2 decorated g-C3N4 material was fabricated used as a sensor for the detection of ethanolamine (EA). The structures, morphology, surface chemical states, band structure were characterized, gas sensing studied. resul...

The organic-inorganic composite g-C3N4eSrTiO3:Rh was prepared for the first time as a photocatalyst for hydrogen production and the resulting hydrogen evolution rate under visible light irradiation from aqueous methanol solution was measured. A high hydrogen evolution rate of 223.3 mmol h 1 was achieved by using 0.1 g of as-prepared photocatalyst powder comprised of 20 wt.% g-C3N4 80 wt.% SrTiO...

In this work g-C3N4/CuS composite film was prepared by successive ion layer adsorption and reaction (SILAR) method used as the counter electrode in quantum dot sensitized solar cell (QDSSCs). To configure cell, CdSe CdS dots acted sensitizers on photoanode side, polysulphide electrolyte copper sulphide deposited into g-C3N4 structure side. Scanning electron microscope X-ray diffraction were to ...

An investigative work was conducted to examine the tensile, flexural and impact strength of carbon fiber reinforced vinyl ester composites filled with different proportions (0, 0.5, 1, 1.5 2) graphitic nitride (g-C3N4) silicon (Si3N4) filler. Composites were fabricated by hand layup method. Results showed an increase in tensile g-C3N4 Si3N4 particles content 1% beyond which decreased. With addi...

g-C3N4 is a promising material for hydrogen production from water via photo-catalysis, if we can tune its band gap to desirable levels. Using a combined experimental and ab initio approach, we uncover an almost perfectly linear relationship between the band gap and structural aspects of g-C3N4, which we show to originate in a changing overlap of wave functions associated with the lattice consta...

Understanding the photoexcitation processes in semiconductors is critical for the design of advanced photocatalytic materials. Nevertheless, traditional viewpoints focus on photogenerated free charge carriers, which are somehow invalid once the many-body effects are taken into account, especially for polymeric photocatalysts. Here we systematically investigate the photoexcitation processes invo...