Title:
HYDROXYAPATITE AND PREPARATION METHOD THEREFOR, AND APPLICATION THEREOF IN PIEZOELECTRIC CATALYTIC DEGRADATION OF ORGANIC POLLUTANT IN WATER
Document Type and Number:
WIPO Patent Application WO/2023/197385
Kind Code:
A1
Abstract:
A preparation method for a calcined hydroxyapatite material and an application thereof in piezoelectric catalytic removal of an organic pollutant in water, relating to the technical fields of inorganic nanomaterials and piezoelectric catalysis. Anhydrous calcium chloride and monobasic sodium phosphate are used as raw materials to prepare a precursor solution, ethylenediamine is used for adjusting the pH of the precursor solution, pure hydroxyapatite is prepared by means of a simple hydrothermal reaction, and then calcined hydroxyapatite is obtained by means of high-temperature calcination in inert gas. A hydroxyapatite product effectively inhibits the recombination of carriers, improves the mobility of carriers, and also enhances the adsorption capacity of the surface of the material to oxygen, so that the capability of generating active free radicals of the material is improved. Compared with uncalcined hydroxyapatite, the calcined hydroxyapatite can significantly improve the piezoelectric catalytic activity. Experiments prove that rapid degradation of bisphenol A in a water body can be realized under ultrasonic waves, and the performance is obviously superior to that of uncalcined hydroxyapatite.
Inventors:
LU JIANMEI (CN)
LI NAJUN (CN)
LI NAJUN (CN)
Application Number:
PCT/CN2022/091237
Publication Date:
October 19, 2023
Filing Date:
May 06, 2022
Export Citation:
Assignee:
UNIV SOOCHOW (CN)
International Classes:
B01J37/08; B01J27/18; C02F1/36; C02F101/34
Foreign References:
| CN111229263A | 2020-06-05 | |||
| CN109928374A | 2019-06-25 | |||
| CN102703977A | 2012-10-03 | |||
| CN114073972A | 2022-02-22 | |||
| CN101407316A | 2009-04-15 | |||
| CN109133022A | 2019-01-04 | |||
| CN101491690A | 2009-07-29 | |||
| CN106976850A | 2017-07-25 | |||
| JPH072505A | 1995-01-06 |
Attorney, Agent or Firm:
SUZHOU CREATOR PATENT AND TRADEMARK AGENCY, LTD (CN)
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