IP Library › Granted Patent US 12,227,412
Granted Patent B2
US 12,227,412 · App. 17/075,582 · Granted Feb 18, 2025

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

Inventors: Kamel Abdelmoniem Mohamed Eid (Sharkia, EG); Aboubakr Moustafa Abdullah (Giza, EG)
Assignee: Qatar University
C01B21/0605B01D53/04B01J27/24B01D2257/504C01P2002/01C01P2002/10C01P2002/52C01P2002/85C01P2004/03C01P2004/04C01P2004/16C01P2006/12C01P2006/16
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Quick Facts
Patent No.
US 12,227,412
App. No.
17/075,582
Granted
Feb 18, 2025
Kind
B2
Abstract

In some aspects and embodiments, the present application provides a wide range of porous 1-D polymeric graphitic carbon-nitride materials that are atomically doped with binary metals in different morphologies. In some embodiments, the graphitic carbon-nitride materials can be prepared with high mass production from inexpensive and natural abundant precursors. In some embodiments, the materials were used successfully for the oxidation of CO to CO 2 under ambient reaction temperature in addition to the reduction of CO 2 into hydrocarbons. In some embodiments, the materials can be used for practical and large-scale gas conversion for household or industrial applications.

Claims (13)

1. A method of reducing CO 2 , comprising

providing a CO 2 gas mixture comprising at least 1% CO;

providing a catalyst to contact the CO 2 gas mixture, wherein the catalyst comprises a graphitic-like carbon nitride nanostructure; and

performing a CO 2 reduction reaction;

wherein the nanostructure is doped atomically with one or more metal elements, wherein the one or more metal elements comprise a metal element selected from the group consisting of gold (Au), palladium (Pd), and platinum (Pt);

wherein the nanostructure comprises at least one of nanotubes, nanorods, or nanofibers;

wherein the nanostructure is additionally characterized by at least one of the following features:

(i) wherein the nanostructure is doped with 1-1.2 wt. % Au/Pd or 1-1.2 wt. % Pt/Pd; or

(ii) wherein the nanostructure is selected from the group consisting of a carbon nitride nanotube doped with Au and Pd (Au/Pd/gC 3 N 4 NT), a carbon nitride nanofiber doped with Au and Pd (Au/Pd/gC 3 N 4 NF), and a carbon nitride nanorod doped with Pt and Pd (Pt/Pd/CN nanorod).

2. The method of claim 1 , wherein CO 2 is reduced to HCO 2 H and CO is oxidized to CO 2 .

3. The method of claim 1 , wherein the CO oxidation or the CO 2 reduction is performed under a condition wherein a UV-light is on the catalyst.

4. The method of claim 1 , comprising converting CO or CO 2 to a hydrocarbon.

5. The method of claim 1 , wherein the nanostructure is porous, having surface area ranging from 300 m 2 g −1 to 350 m 2 g −1 , an average pore size/diameter ranging from 45 nm to 65 nm, and a pore volume ranging from 0.45 cc/g to 0.65 cc/g.

Continuity (3)
Division 16846020 · Apr 10, 2020
Provisional Application 62960946 · Jan 14, 2020
Related Publication 20210047183A1 · Feb 18, 2021
References Cited (31)
US 10170770B2 · Kurungot et al. · 2019 [cited by applicant]
US 20070149392A1 · Ku · 2007 [cited by examiner]
US 20180148565A1 · Asif et al. · 2018 [cited by applicant]
CN 101116817A · 2008 [cited by applicant]
CN 106861737A · 2017 [cited by applicant]
CN 108686690A · 2018 [cited by applicant]
CN 108823596A · 2018 [cited by applicant]
CN 111715262A · 2020 [cited by applicant]
Wang et al.; Catalysis Communications; 74, 2016. [cited by examiner]
Eid et al.; Precise fabrication of porous one-dimensional gC3N4 nanotubes doped with Pd and Cu atoms for efficient CO oxidation and CO2 reduction; Inorganic Chemistry Communications 107; 2019. [cited by examiner]
Chakrabarty et al., “Electron doped C [cited by applicant]
Eid et al., “Data on catalytic CO oxidation and CO [cited by applicant]
Eid et al., “Precise fabrication of porous one-dimensional gC [cited by applicant]
Eid et al., “Rational Synthesis of One-dimensional Carbon Nitride-based Nanofibers Atomically Doped with Au/Pd for Efficient Carbon Monoxide Oxidation”, Langmuir, 2019, vol. 35, pp. 3421-3431. DOI: 10.1021/acs.langmuir.… [cited by applicant]
Eid et al., “Unraveling template-free fabrication of carbon nitride nanorods codoped with Pt and Pd for efficient electrochemical and photoelectrochemical carbon monoxide oxidation at room temperature”, Nanoscate, 2019,… [cited by applicant]
Eid et al., “Rational synthesis of one-dimensional carbon nitride-based nanofibers atomically doped with Au/Pd for efficient carbon monoxide oxidation”, International Journal of Hydrogen Energy, 2019, vol. 44, pp. 17943… [cited by applicant]
Eid et al., “Versatile synthesis of Pd and Cu Co-doped Porous carbon nitride Nanowires for catalytic CO oxidation recation”, Catalyst; Sep. 22, 2018, vol. 8(411). [cited by applicant]
Jiang, et al., “Bimetallic Ag—Cu supported on graphitic carbon nitride nanotubes for improved visible-light photocatalytic hydrogen production”, ACS Appl. Material Interfaces 2018; vol. 10, pp. 9468-9477. [cited by applicant]
Li et al., “Potential of transition metal atoms embedded in buckled monolayer g-C [cited by applicant]
Nematollahi et al., “A comparative DFT study on CO oxidation reaction over Si-doped BC [cited by applicant]
Nematollahi et al., “The role of healed N-vacancy defective BC [cited by applicant]
Shi et al., “Novel CuCo2O4/graphitic carbon nitride nanohybrids: Highly effective catalysts for reducing CO generation and fire hazards of thermoplastic polyurethane nanocomposites”, Journal of Hazardous Materials, 2015… [cited by applicant]
Singh et al., “Gold Nanoparticles Supported on Carbon Nitride: Influence of Surface Hydroxyls on Low Temperature Carbon Monoxide Oxidation”, ACS Catalysis, 2012, vol. 2(6), pp. 1138-1146. dx.doi.org/10.1021/cs3001094. [cited by applicant]
Wang et al., “Cobalt Oxide Decorated Flower-Like g-C [cited by applicant]
Wang et al., “Confined Catalysis in the g-C [cited by applicant]
Wang et al., “Recent advances of Graphitic Carbon Nitride-Based Structures and Applications in Catalyst, Sensing, Imaging, and LED's”, Nano-Micro Lett. 2017, vol. 9(47); https://doi.org/10.1007/s40820-017-0148-2. [cited by applicant]
Wu et al., “Adsorption of H [cited by applicant]
Yang et al., “A heterostructured TiO [cited by applicant]
Yang et al., “Effect of mesoporous g-C3 N4 substrate on catalytic oxidation of CO over CO [cited by applicant]
Yang et al., “Effect of the structure of CN/Silica composite support on the catalytic performances of CO [cited by applicant]
Zhu et al., “Oxygen activation sites in gold and iron catalysts supported on carbon nitride and activated carbon”, Journal of Catalysis, 2010, vol. 274, pp. 207-214. [cited by applicant]