US 12479723 B1Patent grantUnited States

g-C3N4–MnO2 Nanocomposite Manufacturing

Official patent title

Manufacturing a nanocomposite

Arabic title: تصنيع مركب نانوي

Invention

Problem

Ternary nanocomposites require controlled stoichiometry, phase formation, porosity, and morphology. Inconsistent precursor mixing or thermal processing can create unwanted phases and variable functional performance.

Why it matters

A reproducible preparation route can supply structurally defined material for later screening in catalysis, energy, environmental, or other applications.

Approach

The method forms a g-C3N4@MnO2/MgAl2O4 composite by solution mixing of magnesium, aluminum, and manganese salts, solvent removal, grinding, calcination, addition of urea, and a second heating step.

Who may benefit

Potential beneficiaries include nanomaterial manufacturers, catalyst researchers, advanced-ceramics laboratories, energy-material developers, and university materials centers.

Potential value

The disclosure specifies precursor stoichiometry, two thermal stages, a 5–15:2–7:75–95 component relationship, porosity ranges, and crystallographic signatures for the resulting ternary composite.

Background

Graphitic carbon nitride, manganese dioxide, and magnesium aluminate can contribute different surface, redox, and structural properties. Obtaining a controlled composite requires the intended metal ratios, adequate precursor mixing, removal of solvent, and thermal conditions that form crystalline oxide and carbon-nitride phases without excessive impurities. The patent addresses manufacturing and characterization rather than one end-use performance metric. Its value therefore depends on whether independent batches reproduce the phase composition, porosity, morphology, and properties needed for a selected application.

Technology overview

Magnesium, aluminum, and manganese salts are combined within 5 mol.% of target stoichiometry in aqueous menthol or dextrose. At least 99.5 wt.% solvent is removed, the solid is ground and calcined at 600–800 °C for 2–4 hours, then ground with urea and heated at 550–650 °C for 15 minutes to 1.5 hours. The product contains g-C3N4, MnO2, and MgAl2O4 in the stated range, with 16.2–20.2 m²/g BET area and 5–15 nm pores.

Potential applications

Ternary nanocomposite production.
Catalyst-material screening.
Energy and environmental material research.
Advanced ceramic-powder development.

Evidence-supported advantages

Defines two thermal processing stages.
Uses specified precursor stoichiometry tolerances.
Provides composition and porosity ranges.
Includes XRD and diffraction signatures.
Avoids sonication in the claimed route.

Development stage

Laboratory preparation and structural, porosity, and microscopy characterization are described; manufacturing yield, batch reproducibility, scale-up, and application-specific functional performance were not established. The development stage was not independently verified.

Commercial opportunity

The process may support licensing as a platform-material preparation method. Commercial assessment needs batch reproducibility, yield, impurity and phase control, energy and precursor cost, emissions and solvent handling, scaled mixing and calcination, powder safety, application-specific performance benchmarks, and quality specifications linked to a defined customer use.

Patent classifications

WIPO IPC

C01B21/06Non-metallic elements; compounds thereof
C01F7/162Compounds of beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium or rare-earth metals

CPC

C01B21/0605Non-metallic elements; compounds thereof
C01G45/024Compounds containing metals not covered by subclasses C01D or C01F
C01F7/162Compounds of beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium or rare-earth metals
C01P2006/17Indexing scheme for structural and physical aspects of solid inorganic compounds
C01P2006/12Indexing scheme for structural and physical aspects of solid inorganic compounds
C01P2006/14Indexing scheme for structural and physical aspects of solid inorganic compounds
C01P2002/01Indexing scheme for structural and physical aspects of solid inorganic compounds
C01P2006/16Indexing scheme for structural and physical aspects of solid inorganic compounds
C01P2002/72Indexing scheme for structural and physical aspects of solid inorganic compounds
C01P2004/04Indexing scheme for structural and physical aspects of solid inorganic compounds

Inventors

First inventorMohamed Khairy Abdel Fattah Omran
InventorBabiker Yagoub Elhadi Abdulkhair

Keywords

nanocomposite manufacturing
graphitic carbon nitride
manganese dioxide
magnesium aluminate
calcination
urea
porous material

Patent document and drawings

The patent publication is mapped to this record. Patent drawings remain within that publication; no separately cleared public media package has been supplied.