Title:
K, RB CO-DOPED C3N4 PHOTOCATALYST AND APPLICATION THEREOF IN PREPARATION OF ACETALDEHYDE BY SYNERGISTIC PHOTOCATALYTIC CO2 REDUCTION AND ETHANOL OXIDATION
Document Type and Number:
WIPO Patent Application WO/2023/193472
Kind Code:
A1
Abstract:
Provided are a K, Rb co-doped C3N4 photocatalyst and an application thereof in the preparation of acetaldehyde by synergistic photocatalytic CO2 reduction and ethanol oxidation. The preparation method for the photocatalyst comprises the following steps: (1) carrying out high-temperature polymerization on dicyanodiamide in an inert atmosphere, cooling to room temperature, and grinding an obtained product to obtain carbon nitride C3N4; (2) mixing the C3N4 with potassium salt and rubidium salt in deionized water and ultrasonically obtaining a mixed solution, uniformly stirring at room temperature, then drying to obtain mixture solids; and (3) introducing an inert gas to the mixture solids and performing pyrolysis, cooling to room temperature, washing, and drying to obtain the photocatalyst. The provided K and RB co-doped C3N4 photocatalyst innovatively realizes synergistic photocatalytic CO2 reduction and ethanol oxidation, the produced acetaldehyde product has the advantages of high yield and high selectivity, raw materials are easy to obtain, and the reaction process is simple.
Inventors:
WANG FUXIAN (CN)
LIU QIONG (CN)
LIU QIONG (CN)
Application Number:
PCT/CN2022/139950
Publication Date:
October 12, 2023
Filing Date:
December 19, 2022
Export Citation:
Assignee:
INSTITUTE OF ANALYSIS GUANGDONG ACADEMY OF SCIENCES CHINA NAT ANALYTICAL CENTER GUANGZHOU (CN)
International Classes:
B01J27/24; B01D53/00; B01D53/62; B01D53/86; C07C45/29; C07C47/06
Foreign References:
| CN113083341A | 2021-07-09 | |||
| CN113426470A | 2021-09-24 | |||
| CN114289049A | 2022-04-08 | |||
| JP2017144421A | 2017-08-24 |
Other References:
LIANG HONGYU, ZOU HE; HU SHAOZHENG; LI JIANZHONG; TIAN YANWEN: "Preparation of Alkali Metals Co-doped Graphitic Carbon Nitride by Molten Salt Method and Photocatalytic Performance", CAI LIAO DAO BAO = MATERIALS REVIEW, GUO JIA KE WEI GONG YE KE JI SI, ZHONG GUO KE XUE JI SHU XIN XI YAN JIU SUO CHONG QING FEN SUO ZHU BAN, CN, vol. 32, no. 12, 31 December 2018 (2018-12-31), CN , pages 4217 - 4223, XP093097794, ISSN: 1005-023X, DOI: 10.11896/j.issn.1005-023X.2018.24.002
KUMAR ASHISH, KASHYAP SANIYA, SHARMA MANISHA, KRISHNAN VENKATA: "Tuning the surface and optical properties of graphitic carbon nitride by incorporation of alkali metals (Na, K, Cs and Rb): Effect on photocatalytic removal of organic pollutants", CHEMOSPHERE, PERGAMON PRESS, OXFORD., GB, vol. 287, 1 January 2022 (2022-01-01), GB , pages 131988, XP093097797, ISSN: 0045-6535, DOI: 10.1016/j.chemosphere.2021.131988
KUMAR ASHISH, KASHYAP SANIYA, SHARMA MANISHA, KRISHNAN VENKATA: "Tuning the surface and optical properties of graphitic carbon nitride by incorporation of alkali metals (Na, K, Cs and Rb): Effect on photocatalytic removal of organic pollutants", CHEMOSPHERE, PERGAMON PRESS, OXFORD., GB, vol. 287, 1 January 2022 (2022-01-01), GB , pages 131988, XP093097797, ISSN: 0045-6535, DOI: 10.1016/j.chemosphere.2021.131988
Attorney, Agent or Firm:
GUANGZHOU KEYUE I.P. LAW OFFICE (CN)
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