公开(公告)号：US20240278209A1

公开(公告)日：2024-08-22

申请号：US18569419

申请日：2022-06-15

Applicant: University of Maine System Board of Trustees

Inventor： Islam Hafez ,  Mehdi Tajvidi ,  Md Musfiqur Rahman ,  Aria Amirbahman

IPC: B01J20/24 ,  B01J20/28 ,  B01J20/32 ,  C02F1/28 ,  C02F101/10

CPC classification number: B01J20/24 ,  B01J20/28007 ,  B01J20/28028 ,  B01J20/28047 ,  B01J20/3236 ,  B01J20/3282 ,  C02F1/288 ,  C02F2101/103 ,  C02F2305/08 ,  C02F2307/14

Abstract: The present disclosure provides compositions for removing one or more toxic species, such as arsenic, one or more metalloids, or one or more other toxic elements and/or molecules, by, for example adsorption, methods of forming such compositions, and methods of using such compositions. In particular, in certain embodiments, a composition for removing one or more toxic species from a fluid (e.g., water) includes a cellulose-based matrix and a plurality of metal oxide particles dispersed throughout the matrix. The cellulose-based matrix may be a network and/or may be a cellulose fibril matrix, such as a cellulose nanofibril (CNF) matrix. The cellulose-based matrix may be an aerogel, for example a CNF aerogel. The metal oxide particles may be iron oxide particles, such as iron oxide nanoparticles. In some embodiments, a composition comprises metal oxide (e.g., iron oxide) particles (e.g., nanoparticles) dispersed in a cellulose fibril (e.g., CNF) aerogel matrix.