公开(公告)号：US20240140818A1

公开(公告)日：2024-05-02

申请号：US18547403

申请日：2021-06-25

Applicant: INSTITUTE OF PROCESS ENGINEERING, CHINESE ACADEMY OF SCIENCES

Inventor： Dan Wang ,  Xuanbo Chen ,  Nailiang Yang

IPC: C01G35/00 ,  B01D1/00 ,  C02F1/04 ,  C02F1/14

CPC classification number: C01G35/00 ,  B01D1/0035 ,  C02F1/048 ,  C02F1/14 ,  C01P2002/02 ,  C01P2002/72 ,  C01P2004/04 ,  C01P2006/42 ,  C01P2006/60

Abstract: The present invention relates to the technical field of functional materials, and in particular to an amorphous metal oxide hollow multi-shell material and a preparation method therefor and an application thereof. The method includes the following steps: 1) performing a heating reaction on a carbon source aqueous solution, filtering, washing, and drying to obtain a carbon sphere template; 2) dispersing the carbon sphere template obtained in step 1) in a first metal salt solution, heating, adsorbing, and drying to obtain a first solid precursor; 3) dispersing the solid precursor obtained in step 2) in a second metal salt solution again, adsorbing, and drying to obtain a second solid precursor; and 4) calcinating the second solid precursor obtained in step 3) to obtain the amorphous metal oxide hollow multi-shell material. According to the present invention, a defect-controllable doping energy level is introduced into a metal oxide hollow sphere by means of a two-step enhanced adsorption method, so that efficient absorption of wave bands in a solar spectrum is achieved.

公开(公告)号：US12195349B2

公开(公告)日：2025-01-14

申请号：US18547403

申请日：2021-06-25

Applicant: INSTITUTE OF PROCESS ENGINEERING, CHINESE ACADEMY OF SCIENCES

Inventor： Dan Wang ,  Xuanbo Chen ,  Nailiang Yang

IPC: C01G35/00 ,  B01D1/00 ,  C02F1/04 ,  C02F1/14

Abstract: The present invention relates to the technical field of functional materials, and in particular to an amorphous metal oxide hollow multi-shell material and a preparation method therefor and an application thereof. The method includes the following steps: 1) performing a heating reaction on a carbon source aqueous solution, filtering, washing, and drying to obtain a carbon sphere template; 2) dispersing the carbon sphere template obtained in step 1) in a first metal salt solution, heating, adsorbing, and drying to obtain a first solid precursor; 3) dispersing the solid precursor obtained in step 2) in a second metal salt solution again, adsorbing, and drying to obtain a second solid precursor; and 4) calcinating the second solid precursor obtained in step 3) to obtain the amorphous metal oxide hollow multi-shell material. According to the present invention, a defect-controllable doping energy level is introduced into a metal oxide hollow sphere by means of a two-step enhanced adsorption method, so that efficient absorption of wave bands in a solar spectrum is achieved.