Title:
METHOD FOR USING TANNIC ACID COATING TO ASSIST IN IN-SITU REDUCTION OF SURFACE OF PHENOLIC RESIN MICROSPHERE TO FORM ULTRA-SMALL-SIZE AND HIGH-DENSITY NANO-SILVER PARTICLE
Document Type and Number:
WIPO Patent Application WO/2023/039948
Kind Code:
A1
Abstract:
A method for using a tannic acid coating to assist in the in-situ reduction of a surface of a phenolic resin microsphere to form an ultra-small-size and high-density nano-silver particle, relating to biomass-based nano material preparation technologies. Preparation steps of the method are: (1) preparing a phenolic resin microsphere by a hydrothermal solvent method; (2) under normal temperature and alkaline conditions, stirring a phenolic resin microsphere and tannic acid mixed phase to form a tannic acid-coated phenolic resin microsphere (hereinafter referred to as TA-CFR); and (3) using a silver ammonia solution for loading silver on the surface of the TA-CFR to form TA-CFR@Ag. The TA-CFR@Ag formed by the method has ultra-small-size and ultra-high-density silver nanoparticle distribution.
Inventors:
JIANG WEIKUN (CN)
ZHANG SHUO (CN)
LIU YU (CN)
LIU GUOLONG (CN)
CHEN HONGLEI (CN)
ZHANG SHUO (CN)
LIU YU (CN)
LIU GUOLONG (CN)
CHEN HONGLEI (CN)
Application Number:
PCT/CN2021/121373
Publication Date:
March 23, 2023
Filing Date:
September 28, 2021
Export Citation:
Assignee:
UNIV QILU TECHNOLOGY (CN)
International Classes:
B82Y30/00; A01P1/00; B01J31/06; C08G8/20
Domestic Patent References:
| WO2013191760A1 | 2013-12-27 |
Foreign References:
| CN109647513A | 2019-04-19 | |||
| CN113106749A | 2021-07-13 | |||
| US20210230777A1 | 2021-07-29 | |||
| CN111875816A | 2020-11-03 |
Other References:
ZHOU DAI; LEI QIAN; CHEN XIAOHONG; SONG HUAIHE: "Preparation of nano-sized phenolic resin microspheres by a hydrothermal method", JOURNAL OF BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY (NATURAL SCIENCE EDITION), BEIJING HUAGONG DAXUE, CN, vol. 43, no. 4, 20 July 2016 (2016-07-20), CN , pages 53 - 58, XP009544574, ISSN: 1671-4628, DOI: 10.13543/j.bhxbzr.2016.04.009
Attorney, Agent or Firm:
JINAN SHENGDA INTELLECTUAL PROPERTY AGENCY CO.,LTD. (CN)
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