# US 2026/0097967 A1 · Activated carbon doped for bismuth oxy-iodide-based nanocomposites

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2026/0097967 A1
- Document ID: US20260097967A1
- Status: Published application
- Kind: A1
- Application number: 18/909,490
- Filed: 2024-10-08
- Published: 2026-04-09
- Earliest claimed: 2024-10-08
- Assignees: Imam Mohammad Ibn Saud Islamic University
- Applicants: Imam Mohammad Ibn Saud Islamic University
- Inventors: Babiker yagoub Elhadi ABDULKHAIR; Mohamed Khairy OMRAN; Faisal K. ALGETHAMI
- Web page: https://patentgrep.com/patent/US20260097967A1

## CPC

- C01B 32/318: characterised by the starting materials
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- B82Y 40/00: Manufacture or treatment of nanostructures
- C01G 29/00: Compounds of bismuth
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- C01G: COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts or peroxyacids C01B15/00; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium, or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds containing nitrogen, other non-metals and metal C01B21/082}; metal amides C01B21/092; nitrites C01B21/50; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; compounds having molecular sieve properties but not having base-exchange properties C01B37/00; compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, C01B39/00; cyanides C01C3/08; salts of cyanamide C01C3/16; thiocyanates C01C3/20)

## Abstract

Aspects of the present disclosure are directed towards a method for producing an activated carbon/bismuth oxy-iodide nanocomposite. The method includes heating a glycol solution including Bi(NO3)3·5H2O and activated carbon to 100° C. The method includes heating a glycol solution includes potassium iodide to 100° C. The method includes adding the glycol solution including Bi(NO3)3·5H2O and activated carbon and the glycol solution including potassium iodide to a reaction vessel including a solvent to form a reaction mixture. The method includes chilling the reaction mixture to ambient temperature. The method includes filtering the reaction mixture to obtain the activated carbon/bismuth oxy-iodide nanocomposite.

## Claims

### Claim 1 (depends on 11)

A method for producing the nanocomposite of claim 11, the method comprising:
heating a glycol solution comprising Bi(NO3)3·5H2O and activated carbon to 100° C.;
heating a glycol solution comprising potassium iodide to 100° C.;
adding the glycol solution comprising Bi(NO3)3·5H2O and activated carbon and the glycol solution comprising potassium iodide to a reaction vessel comprising a solvent to form a reaction mixture;
chilling the reaction mixture to ambient temperature; and
filtering the reaction mixture to obtain the activated carbon/bismuth oxy-iodide nanocomposite.

### Claim 2 (depends on 1)

The method of claim 1, wherein the glycol solution comprises ethylene glycol.

### Claim 3 (depends on 1)

The method of claim 1, wherein the concentration of Bi(NO3)3·5H2O in the reaction mixture is in a range from 0.05 to 0.25 M.

### Claim 4 (depends on 1)

The method of claim 1, wherein the concentration of potassium iodide in the reaction mixture is in a range from 0.05 to 0.25 M.

### Claim 5 (depends on 1)

The method of claim 1, wherein the amount of activated carbon in the glycol solution comprising Bi(NO3)3·5H2O and activated carbon is greater than or equal to 10% of the amount of Bi(NO3)3·5H2O present.

### Claim at position 6

6-10. (canceled)

### Claim 11

A nanocomposite, comprising, relative to total nanocomposite weight:
bismuth oxy-iodide in at least 90 wt. %; and
activated carbon in a range of from 1 to 10 wt. %,
wherein the bismuth oxy-iodide comprises the iodine in a range of from 27 to 35 wt. %, the bismuth in a range of from 60 to 62 wt. %, and the oxygen in I to 5 wt. %
wherein the activated carbon is in a form of particles and/or particulate aggregates having micropores and mesopores,
wherein the particles of the activated carbon are substantially spherical such that a distance from an activated carbon particle center of mass to anywhere on the activated carbon particle outer surface varies by less than 30%,
wherein the bismuth oxy-iodide in the nanocomposite has tetragonal hollow nanosphere structures,
wherein the activated carbon has a surface area in a range of from 500 to 5000 m2/g,
wherein the nanocomposite has a crystal size in a range of from 11.7 to 47.9 nm,
wherein the nanocomposite has a crystal lattice size in a range of from 0.022 to 0.023 Å,
wherein the nanocomposite has a lattice strain in a range of from 0.604 to 0.607 Å, and
wherein the nanocomposite comprises no graphene, carbon nanofibers, or nanotubes.

### Claim 12 (depends on 11)

The nanocomposite of claim 11, wherein the activated carbon/bismuth oxy-iodide nanocomposite comprises carbon in a range of from 1.2 to 10 wt. %.

### Claim 13 (depends on 11)

The nanocomposite of claim 11, wherein the activated carbon/bismuth oxy-iodide nanocomposite comprises carbon in a range of from 1.2 to 1.5 wt. %.

### Claim at position 10

14-20. (canceled)

### Claim 21 (depends on 11)

The nanocomposite of claim 11, comprising the activated carbon in a range of from 1.0 to 1.69 wt. %.

### Claim 22 (depends on 11)

The nanocomposite of claim 11, comprising the activated carbon in a range of from 1.0 to 1.21 wt. %.

### Claim 23 (depends on 11)

The nanocomposite of claim 11, comprising the activated carbon in a range of from 1.21 to 1.69 wt. %.

### Claim 24 (depends on 11)

The nanocomposite of claim 11, having 1.0 wt. % of activated carbon and a particle size of from 32.2 to 36.7 nm.

### Claim 25 (depends on 11)

The nanocomposite of claim 11, having 1.21 wt. % of activated carbon and a particle size of from 11.7 to 29.4 nm.

### Claim 26 (depends on 11)

The nanocomposite of claim 11, having 1.69 wt. % of activated carbon and a particle size of from 26.9 to 47.9 nm.

### Claim 27 (depends on 11)

The nanocomposite of claim 11, wherein the distance from the activated carbon particle center of mass to anywhere on the activated carbon particle outer surface varies by less than 20%.

### Claim 28 (depends on 11)

The nanocomposite of claim 11, wherein the distance from the activated carbon particle center of mass to anywhere on the activated carbon particle outer surface varies by less than 10%.

### Claim 29 (depends on 11)

The nanocomposite of claim 11, having a dielectric constant, at ambient temperature, in a range of greater than 8 to 34.55.

### Claim 30 (depends on 11)

The nanocomposite of claim 11, comprising at least 98.5 wt. % of the bismuth oxy-iodide.

### Claim 31 (depends on 11)

The nanocomposite of claim 11, consisting of the bismuth oxy-iodide and the activated carbon.

### Claim 32 (depends on 11)

The nanocomposite of claim 11, wherein the crystal size of the nanocomposite is in a range of from 15.08 to 34.8 nm.