Title:
METHOD FOR MANUFACTURING COMPOSITE PHOTOCATALYST FILTER ACTIVATED BY OXYGEN VACANCY AND AIR PURIFICATION FILTER ACCORDING THERETO
Document Type and Number:
WIPO Patent Application WO/2024/053969
Kind Code:
A1
Abstract:
The present invention provides a method for manufacturing a composite photocatalyst filter activated by oxygen vacancies, the method comprising: a first step of preparing a Black-WO3 (BW) catalyst by thermally treating tungsten oxide powder under a reducing gas atmosphere at a temperature range of 400 to 600°C; a second step of preparing a Black-TiO2 (BT) catalyst by thermally treating a mixture of titanium dioxide and a reducing agent under an inert gas atmosphere at a temperature range of 200 to 400°C; a third step of forming a composite photocatalyst by combining the prepared BT and BW catalysts; and a fourth step of embedding the composite photocatalyst in filter paper to fabricate a filter, wherein carbon monoxide is removed from the surrounding environment by adsorption onto the filter when the T:W ratio of the composite photocatalyst is between 1:1 and 19:1.
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Inventors:
PARK HYUN WOONG (KR)
PARK JIYEON (KR)
PARK JIYEON (KR)
Application Number:
PCT/KR2023/013184
Publication Date:
March 14, 2024
Filing Date:
September 04, 2023
Export Citation:
Assignee:
KYUNGPOOK NAT UNIV IND ACADEMIC COOP FOUND (KR)
International Classes:
B01D39/14; B01D39/20; B01D53/86; B01J21/06; B01J23/30; B01J35/00; B01J37/08; B01J37/16
Foreign References:
| KR101798129B1 | 2017-11-15 | |||
| KR101768705B1 | 2017-08-17 | |||
| US20070259267A1 | 2007-11-08 |
Other References:
JIANG LIAOCHUAN, GAO XINGYUAN, CHEN SHAOLING, ASHOK JANGAM, KAWI SIBUDJING: "Oxygen-Deficient WO3/TiO2/CC Nanorod Arrays for Visible-Light Photocatalytic Degradation of Methylene Blue", CATALYSTS, M D P I AG, CH, vol. 11, no. 11, 9 November 2021 (2021-11-09), CH , pages 1349, XP093147476, ISSN: 2073-4344, DOI: 10.3390/catal11111349
YUAN KAIPING, CAO QI, LU HONG-LIANG, ZHONG MIAO, ZHENG XIUZHEN, CHEN HONG-YAN, WANG TAO, DELAUNAY JEAN-JACQUES, LUO WEI, ZHANG LIW: "Oxygen-deficient WO 3−x @TiO 2−x core–shell nanosheets for efficient photoelectrochemical oxidation of neutral water solutions", JOURNAL OF MATERIALS CHEMISTRY A, ROYAL SOCIETY OF CHEMISTRY, GB, vol. 5, no. 28, 1 January 2017 (2017-01-01), GB , pages 14697 - 14706, XP093147478, ISSN: 2050-7488, DOI: 10.1039/C7TA03878J
YUAN KAIPING, CAO QI, LU HONG-LIANG, ZHONG MIAO, ZHENG XIUZHEN, CHEN HONG-YAN, WANG TAO, DELAUNAY JEAN-JACQUES, LUO WEI, ZHANG LIW: "Oxygen-deficient WO 3−x @TiO 2−x core–shell nanosheets for efficient photoelectrochemical oxidation of neutral water solutions", JOURNAL OF MATERIALS CHEMISTRY A, ROYAL SOCIETY OF CHEMISTRY, GB, vol. 5, no. 28, 1 January 2017 (2017-01-01), GB , pages 14697 - 14706, XP093147478, ISSN: 2050-7488, DOI: 10.1039/C7TA03878J
Attorney, Agent or Firm:
KIM, Sunghyun (KR)
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