Title:
TWO-DIMENSIONAL NANOSHEET AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/026785
Kind Code:
A1
Abstract:
A preparation method for a two-dimensional nanosheet. The method comprises: performing a calendering treatment on non-Van der Waals layered crystal particles, and then performing mechanical exfoliation, so as to obtain a two-dimensional nanosheet. Mechanical exfoliation is commonly referred to as a scotch tape method, and mechanical exfoliation may only be performed by using an adhesive tape (sometimes, the assistance of an interposer is required) when the interlayer interaction of a bulk material is dominated by a weak van der Waals force; however, there is significant electron density overlapping between layers of many functional materials with layered stacked crystal structures, and the electron density overlapping forms a non-Van der Waals structure, which cannot be directly exfoliated by using the adhesive tape. In the present method, few-layer or even single-layer structures of various non-Van der Waals layered crystal materials are successfully obtained for the first time by means of a calendering pretreatment combined with mechanical exfoliation; in addition, a new physical phenomenon can be observed in an exfoliated two-dimensional crystal.
Inventors:
GENG FENGXIA (CN)
JI JINPENG (CN)
JIANG KUN (CN)
JI JINPENG (CN)
JIANG KUN (CN)
Application Number:
PCT/CN2022/110357
Publication Date:
February 08, 2024
Filing Date:
August 04, 2022
Export Citation:
Assignee:
UNIV SOOCHOW (CN)
International Classes:
B22F1/054; C01G19/02; B22F9/04; C01B19/00; C01G31/02; B82Y40/00
Domestic Patent References:
| WO2017158334A1 | 2017-09-21 |
Foreign References:
| CN104609413A | 2015-05-13 | |||
| CN107324320A | 2017-11-07 | |||
| CN107381643A | 2017-11-24 | |||
| CN113200523A | 2021-08-03 | |||
| CN101857195A | 2010-10-13 |
Attorney, Agent or Firm:
SUZHOU CREATOR PATENT AND TRADEMARK AGENCY, LTD (CN)
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