The present invention relates to a synthetic method of graphitic carbon nitride material. The method involves a homogenous mixing of carbon nitride precursor and ammonium salt, and calcining the mixture to obtain a porous graphitic carbon nitride material. Wherein, the ammonium salt is any one or a combination of at least two which could release gaseous NH.sub.3 during thermolysis. The present invention uses thermolabile ammonium salt as a pore former; the thermolysis of ammonium salt could release soft gas bubbles during the calcination; the later burst of bubbles leads to the formation of nanoporous structure. The proposed method is template-free and environmentally-friendly, and the resultant material exhibits high photocatalytic activity in the field of gas and water decontamination.

A highly crystalline mesoporous sulphur functionalized carbon nitride and a process for producing the same. The process including the steps of: providing a carbon nitride precursor material; mixing the carbon nitride precursor material with a metal salt to form a first mixture; and, thermally treating the first mixture to produce the crystalline carbon nitride.

A method for forming a film of graphitic carbon nitride (g-CN) by way of thermal vapor condensation comprising the steps of: a) providing a solid-phase thiourea precursor and a solid-phase melamine precursor in a container; b) covering the container with a first substrate; and c) thermally generating a vapor-phase thiourea source and a vapor-phase melamine source from the solid-phase thiourea precursor and the solid-phase melamine precursor in an air environment thereby forming a layer of g-CN on the first substrate. A film of g-CN formed by the method is also addressed.

A method of hydrogen generation from sodium borohydride (NaBH.sub.4) using zirconium dioxide/calcium silicate/graphitic carbon nitride (ZrO.sub.2/CaSiO.sub.3/g-C.sub.3N.sub.4) based nanocomposite includes hydrolyzing NaBH.sub.4 in the presence of a ZrO.sub.2/CaSiO.sub.3/g-C.sub.3N.sub.4 nanocomposite material, where the NaBH.sub.4 reacts with water to form hydrogen (H.sub.2) gas in the presence of the ZrO.sub.2/CaSiO.sub.3/g-C.sub.3N.sub.4 nanocomposite material as a catalyst. Further, the ZrO.sub.2/CaSiO.sub.3/g-C.sub.3N.sub.4 nanocomposite material includes spherical metal oxide nanoparticles including a ZrO.sub.2 phase and a CaSiO.sub.3 phase dispersed on a matrix of g-C.sub.3N.sub.4 nanosheets, where the spherical metal oxide nanoparticles have an average particle diameter in a range from 3 to 18 nm. Still further, the hydrolyzing proceeds with a hydrogen generation rate of greater than or equal to 200 mL.Math.min.sup.1.Math.g.sup.1.

A method of manufacturing a nanocomposite may include combining a magnesium salt, an aluminum salt, and a ferric salt in stoichiometric proportions within 5 mol. % in an aqueous solvent including menthol or dextrose, to obtain a first mixture, heating the first mixture to remove at least 99.5 wt. % of the aqueous solvent to obtain a first solid, grinding the first solid into a first powder, calcining the first powder at a temperature of about 600 C. to 800 C. for a time of about 2 to 4 hours to obtain a second solid, grinding the second solid and urea, in an amount sufficient to form the nanocomposite, into a second powder, heating the second powder at a temperature of about 550 C. to 650 C. for a time of about 15 minutes to 1.5 hours to obtain the nanocomposite.

A method of generating hydrogen includes reacting sodium borohydride with water in the presence of a Cu.sub.2(OH).sub.3NO.sub.3/CaSiO.sub.3/g-C.sub.3N.sub.4 nanocomposite to hydrolyze sodium borohydride and generate hydrogen. The nanocomposite used is fabricated by mixing CaSiO.sub.3, g-C.sub.3N.sub.4, and a copper salt in a glycol solvent to form a mixture and further microwaving the mixture to obtain the Cu.sub.2(OH).sub.3NO.sub.3/CaSiO.sub.3/g-C.sub.3N.sub.4 nanocomposite.

A method of manufacturing a nanocomposite may include combining a magnesium salt, an aluminum salt, and a manganese salt in stoichiometric proportions within 5 mol. % in an aqueous solvent including menthol or dextrose, to obtain a first mixture. The method further may include heating the first mixture to remove at least 99.5 percent by weight (wt. %) of the aqueous solvent to obtain a first solid, grinding the first solid into a first powder, calcining the first powder at a temperature of about 600 to 800 C. for a time of about 2 to 4 hours to obtain a second solid, grinding the second solid and urea, into a second powder, heating the second powder at a temperature of about 550 to 650 C. for a time of about 15 minutes to 1.5 hours to obtain the nanocomposite.

The present invention provides a photocatalyst composite, a method of preparing the same, and a method of producing hydrogen. The method of preparing the photocatalyst composite includes a step of preparing g-C.sub.3N.sub.4, a step of preparing CuFeO.sub.2 and a step of synthesizing g-C.sub.3N.sub.4/CuFeO.sub.2. Preparing g-C.sub.3N.sub.4 includes heating a predetermined weight of melamine at a predetermined heating rate for a predetermined time to obtain g-C.sub.3N.sub.4 powder. Preparing CuFeO.sub.2 includes hydrothermal synthesis followed by drying to obtain CuFeO.sub.2 powder. Synthesizing g-C.sub.3N.sub.4/CuFeO.sub.2 includes mixing the g-C.sub.3N.sub.4 powder and the CuFeO.sub.2 powder obtained in the previous steps with a predetermined ratio to obtain a photocatalyst composite of g-C.sub.3N.sub.4/CuFeO.sub.2 in which the photocatalyst composite has a heterogeneous structure. The method of producing hydrogen includes adding plastic to an alkaline solution to form a pretreatment solution and performing hydrogen production through a photoreforming reaction in the plastic pretreatment solution using the aforementioned photocatalyst composite.

Disclosed are an anode for a lithium secondary battery, a lithium secondary battery including the anode, and a manufacturing method thereof. In particular, the anode includes a lithium metal layer and an interfacial layer made of phosphorous-doped graphitic carbon nitride and a single ion conducting polymer.

The present invention is concerned with a method of direct synthesis of co-products of at a first co-product and a second co-product. The first co-product is superhydrophilic carbon nitride thin film and the second co-product is superhydrophilic carbon nitride powder. The method has a step of using a guanidine carbonate salt as a precursor material. The present invention is also concerned with carbon nitride co-products. The carbon nitride co-products has a first co-product of superhydrophilic carbon nitride thin film and a second co-product of superhydrophilic carbon nitride powder. The superhydrophilic carbon nitride thin film has chemical formula of CN.sub.x, wherein x is 0.86-1.04, and the superhydrophilic carbon nitride powder has a chemical formula of g-C.sub.3N.sub.4.