Title:
NEW FLUORESCENT POWDER CAPABLE OF PROMOTING PLANT GROWTH UNDER SUNLIGHT, AND PREPARATION AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/218420
Kind Code:
A1
Abstract:
Disclosed in the present invention are a new fluorescent powder capable of promoting plant growth under sunlight, and the preparation and use thereof. The fluorescent powder has the chemical formula of Sr4Al14O25: xMn4+, yMg2+, zLn3+, wherein 0.005 ≤ x ≤ 0.04, 0 < y ≤ 0.2, and 0 < z ≤ 0.7. A strontium compound, an aluminum compound, a manganese compound and a magnesium compound are weighed according to the stoichiometric ratio of each chemical component in the chemical formula; one of a gallium compound, a scandium compound, a chromium compound and a lutetium compound is then weighed; same are ground and mixed, and a fluxing agent is added thereto and then mixed until uniform; and the mixture is placed in a tube furnace in an atmosphere with air introduced therein and is calcinated, naturally cooled to room temperature, and then ground to prepare a new fluorescent powder capable of promoting plant growth under sunlight. The fluorescent powder is low cost and has high brightness, can emit red light that facilitates plant growth, improves the utilization rate of sunlight, promotes plant growth, and is low cost, has high efficiency and is green and pollution-free.
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Inventors:
SETO TAKATOSHI (CN)
LIU BIN (CN)
WANG YUHUA (CN)
WANG SHICHUAN (CN)
LIU BIN (CN)
WANG YUHUA (CN)
WANG SHICHUAN (CN)
Application Number:
PCT/CN2022/087168
Publication Date:
October 20, 2022
Filing Date:
April 15, 2022
Export Citation:
Assignee:
UNIV LANZHOU (CN)
International Classes:
C09K11/64; A01G7/00
Foreign References:
| CN113088283A | 2021-07-09 | |||
| CN113248926A | 2021-08-13 | |||
| CN113444521A | 2021-09-28 | |||
| JP2014189592A | 2014-10-06 | |||
| CN111876145A | 2020-11-03 | |||
| CN112538257A | 2021-03-23 |
Other References:
LUO, LIN ET AL.: "Enhanced luminescence performances of Mn4+-activated Sr4Al14O25 red phosphors by doping with Sc3+ ions", JOURNAL OF RARE EARTHS, vol. 39, no. 4, 18 July 2020 (2020-07-18), XP086521055, ISSN: 1002-0721, DOI: 10.1016/j.jre.2020.06.008
PENG MINGYING, YIN XUEWEN, TANNER PETER A., BRIK M. G., LI PENGFEI: "Site Occupancy Preference, Enhancement Mechanism, and Thermal Resistance of Mn 4+ Red Luminescence in Sr 4 Al 14 O 25 : Mn 4+ for Warm WLEDs", CHEMISTRY OF MATERIALS, AMERICAN CHEMICAL SOCIETY, US, vol. 27, no. 8, 28 April 2015 (2015-04-28), US , pages 2938 - 2945, XP055977103, ISSN: 0897-4756, DOI: 10.1021/acs.chemmater.5b00226
PENG MINGYING, YIN XUEWEN, TANNER PETER A., BRIK M. G., LI PENGFEI: "Site Occupancy Preference, Enhancement Mechanism, and Thermal Resistance of Mn 4+ Red Luminescence in Sr 4 Al 14 O 25 : Mn 4+ for Warm WLEDs", CHEMISTRY OF MATERIALS, AMERICAN CHEMICAL SOCIETY, US, vol. 27, no. 8, 28 April 2015 (2015-04-28), US , pages 2938 - 2945, XP055977103, ISSN: 0897-4756, DOI: 10.1021/acs.chemmater.5b00226
Attorney, Agent or Firm:
LANZHOU ZHIHE PATENT LAW FIRM (GENERAL PARTNERSHIP) (CN)
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