US 12,012,538 B2
Luminescent composite material and preparation method therefor
Liang Li, Shanghai (CN); and Bo Wang, Shanghai (CN)
Assigned to SHANGHAI JIAO TONG UNIVERSITY, Shanghai (CN)
Filed by SHANGHAI JIAO TONG UNIVERSITY, Shanghai (CN)
Filed on Dec. 26, 2020, as Appl. No. 17/134,381.
Claims priority of application No. 201911377745.9 (CN), filed on Dec. 27, 2019.
Prior Publication US 2021/0198568 A1, Jul. 1, 2021
Int. Cl. C09K 11/66 (2006.01); B01J 6/00 (2006.01); B82Y 20/00 (2011.01); B82Y 40/00 (2011.01); C01D 17/00 (2006.01); C09K 11/64 (2006.01)
CPC C09K 11/665 (2013.01) [B01J 6/001 (2013.01); C01D 17/00 (2013.01); C09K 11/64 (2013.01); B82Y 20/00 (2013.01); B82Y 40/00 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for preparing a luminescent composite material, comprising:
(1) mixing at least one precursor of a quantum dot and an oxide or a precursor thereof in solid phase followed by grinding to obtain a uniform mixture; wherein a molar ratio of the at least one precursor of the quantum dot to the oxide or precursor thereof is 1:1-100;
(2) calcining the uniform mixture obtained in step (1) in a nitrogen atmosphere at 500-1000° C. for 5-60 min;
(3) cooling the calcined mixture obtained in step (2) to room temperature; and
grinding the mixture to obtain a luminescent composite material having a particle size less than 80 μm; and
(4) annealing the grinded mixture obtained in step (3) in air at 400-600° C. for 5-60 min to obtain the luminescent composite material.