PL434479A1 - Method for photocatalytic reduction of CO2 - Google Patents
Method for photocatalytic reduction of CO2Info
- Publication number
- PL434479A1 PL434479A1 PL434479A PL43447920A PL434479A1 PL 434479 A1 PL434479 A1 PL 434479A1 PL 434479 A PL434479 A PL 434479A PL 43447920 A PL43447920 A PL 43447920A PL 434479 A1 PL434479 A1 PL 434479A1
- Authority
- PL
- Poland
- Prior art keywords
- titanium dioxide
- catalyst
- photocatalyst
- photocatalytic reduction
- rgo
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 3
- 230000001699 photocatalysis Effects 0.000 title abstract 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical class O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 11
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 abstract 6
- 239000004408 titanium dioxide Substances 0.000 abstract 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 239000003054 catalyst Substances 0.000 abstract 3
- 239000011941 photocatalyst Substances 0.000 abstract 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- 239000012670 alkaline solution Substances 0.000 abstract 2
- 229910021389 graphene Inorganic materials 0.000 abstract 2
- 239000011261 inert gas Substances 0.000 abstract 2
- 238000002360 preparation method Methods 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 229910052786 argon Inorganic materials 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 239000001307 helium Substances 0.000 abstract 1
- 229910052734 helium Inorganic materials 0.000 abstract 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 abstract 1
- 238000010335 hydrothermal treatment Methods 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
Landscapes
- Catalysts (AREA)
Abstract
Przedmiotem zgłoszenia jest sposób fotokatalitycznej redukcji CO2, z wykorzystaniem fotokatalizatora na bazie modyfikowanego ditlenku tytanu w roztworze alkalicznym, który charakteryzuje się tym, że stosuje się fotokatalizator na bazie ditlenku tytanu modyfikowanego zredukowanym tlenkiem grafenu, przy czym ilość fotokatalizatora w alkalicznym roztworze wodnym nasyconym gazowym CO2 wynosi 1 g/dm3. W procesie stosuje się alkaiczny roztwór w postaci NaOH o stężeniu 0,2 M. Proces fotokatalitycznej redukcji CO2 prowadzi się stosując katalizator otrzymany w ten sposób, że ditlenek tytanu w postaci proszku uciera się ze zredukowaną formą tlenku grafenu i poddaje obróbce hydrotermalnej w temperaturze 180°C, w autoklawie, w obecności 2-propanolu przez 4 godziny w warunkach ciśnienia autogenicznego, następnie przez 1 godzinę w tej samej temperaturze pod ciśnieniem atmosferycznym. Stosunek masowy ditlenku tytanu do rGO wynosi 1: 0,1, a ditlenku tytanu do 2-propanolu wynosi 1: 0,8. Uzyskany kompozyt poddaje się wygrzewaniu w atmosferze gazu obojętnego w temperaturze 300 – 1000°C przez 4 godziny. Korzystnie do otrzymania katalizatora stosuje się przemysłowy ditlenek tytanu o strukturze anatazu i powierzchni właściwej powyżej 300 m2/g oraz wielkości cząstek do 400 nm lub komercyjny rGO w postaci płatków. Jako gaz obojętny w sposobie otrzymywania katalizatora stosuje się argon, hel, azot.The subject of the application is a method of photocatalytic reduction of CO2, using a photocatalyst based on modified titanium dioxide in an alkaline solution, which is characterized by the use of a photocatalyst based on titanium dioxide modified with reduced graphene oxide, and the amount of the photocatalyst in the alkaline aqueous solution saturated with gaseous CO2 is 1 g / dm3. The process uses an alkaline solution in the form of NaOH with a concentration of 0.2 M. The photocatalytic reduction of CO2 is carried out using a catalyst obtained in such a way that titanium dioxide in the form of a powder is rubbed with the reduced form of graphene oxide and subjected to a hydrothermal treatment at a temperature of 180 ° C, in an autoclave, in the presence of 2-propanol for 4 hours under autogenous pressure, then for 1 hour at the same temperature under atmospheric pressure. The mass ratio of titanium dioxide to rGO is 1: 0.1 and titanium dioxide to 2-propanol is 1: 0.8. The obtained composite is annealed under an inert gas atmosphere at the temperature of 300-1000 ° C for 4 hours. Preferably, industrial titanium dioxide with an anatase structure and a specific surface area above 300 m2 / g and a particle size of up to 400 nm or commercial rGO in the form of flakes is used for the preparation of the catalyst. Argon, helium and nitrogen are used as inert gases in the catalyst preparation process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL434479A PL245217B1 (en) | 2020-06-26 | 2020-06-26 | Photocatalytic CO2 reduction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL434479A PL245217B1 (en) | 2020-06-26 | 2020-06-26 | Photocatalytic CO2 reduction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL434479A1 true PL434479A1 (en) | 2021-12-27 |
| PL245217B1 PL245217B1 (en) | 2024-06-03 |
Family
ID=80001213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL434479A PL245217B1 (en) | 2020-06-26 | 2020-06-26 | Photocatalytic CO2 reduction method |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL245217B1 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL233637B1 (en) * | 2017-05-22 | 2019-11-29 | Zachodniopomorski Univ Technologiczny W Szczecinie | Method for obtaining photocatalysts based on titanium dioxide modified by reduced form of graphene oxide |
-
2020
- 2020-06-26 PL PL434479A patent/PL245217B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL245217B1 (en) | 2024-06-03 |
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