US 12,421,131 B2
Preparation method for spherical Zn—Mn metal compound
Wenming Liao, Ji 'an (CN); Haihui Chen, Ji 'an (CN); Junyue Lin, Ji 'an (CN); Xiaobing Liu, Ji 'an (CN); Renyun Kuang, Ji 'an (CN); and Tingting Ma, Ji 'an (CN)
Assigned to Jinggangshan University, Ji 'an (CN)
Filed by Jinggangshan University, Ji 'an (CN)
Filed on Jan. 18, 2023, as Appl. No. 18/098,546.
Claims priority of application No. 202210389708.5 (CN), filed on Apr. 14, 2022.
Prior Publication US 2023/0331580 A1, Oct. 19, 2023
Int. Cl. C01G 45/22 (2025.01)
CPC C01G 45/22 (2025.01) [C01P 2004/32 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A preparation method for a spherical Zn—Mn metal compound, comprising the following steps:
dissolving a zinc ion compound and a manganese ion compound into water to form a metal ion solution, and adding the metal ion solution to a carbon dot solution for stirring for 1-120 h; and then, adding a sodium carbonate solution to the above solution at an oil bath at 30-100° C. while stirring, conducting heat preservation for 1-120 h to form suspended solids, and centrifuging precipitates to obtain a spherical Zn—Mn metal carbonate compound, wherein
the carbon dot solution is prepared in the following process: adding acid to adjust a pH value of a water-soluble carbon dot solution or an ethanol carbon dot solution to 7 or a weak acid state, and adding polyvinylpyrrolidone to form a transparent solution.