Porous one-dimensional polymeric graphitic carbon nitride-based nanosystems for catalytic conversion of carbon monoxide and carbon dioxide under ambient conditions

A graphitic-like carbon nitride nanostructure, wherein the nanostructure is doped atomically with one or more metal elements;

• wherein the nanostructure comprises at least one of nanotubes, nanorods, or nanofibers;
• and
• wherein the one or more metal elements comprise a metal element selected from the group consisting of gold (Au), palladium (Pd), copper (Cu), and platinum (Pt);
• wherein the nanostructure is a catalyst for oxidizing CO in a CO gas mixture and/or reducing CO2 in a CO2 gas mixture at a temperature ranging from room temperature to 300° C., wherein the CO gas mixture contains 1%-100% of CO, and wherein the CO2 gas mixture contains 1%-100% of CO2;
• wherein the CO and CO2 conversion is enhanced using at least one other metal support selected from the group consisting of metal oxides, molecular sieves, carbon supports, ceramic-based materials, clay-based materials, and promoters,
• wherein the metal oxides is at least one of TiO2, CeO2,Fe2O3, SiO2, or Fe3O4,
• wherein the molecular sieves is a zeolite,
• wherein the carbon supports is at least one of diamond, graphene, cellulose, lignin, and carbon nanotube,
• wherein the ceramic-based materials comprises bioglass and hydroxyapatite,
• wherein the clay-based materials comprises bentonite and halloysite, and
• wherein the promotors comprises KOH, HCl, HNO3, and CH3COOH.