Issue 7, 2021

Multilevel/hierarchical nanocomposite-imprinted regenerated cellulose membranes for high-efficiency separation: a selective recognition method with Au/PDA-loaded surface

Abstract

Although many researchers have done several studies on improving the selective separation performance of membrane materials, the conceptions and applications of membrane-based molecular imprinting separation and recognition with both high permselectivity and rebinding capacity have still faced challenges. Herein, for the first time, the bioinspired polydopamine (PDA)-modified porous regenerated cellulose membrane (pRCMs) with Au-based imprinting structure was constructed for the synthesis of molecularly imprinted nanocomposite membranes (MINMs); propranolol was used as template molecule. Importantly, based on the as-constructed PDA-modified layers, abundant Au-modified particles have been uniformly distributed onto the surfaces of membranes, and Au/PDA-based structures can be used as the imprinted-initiated factors for the preparation of sandwich-like-imprinted sites by developing a two-step temperature propranolol-imprinting method. Moreover, superior rebinding capacity (76.87 mg g−1) and selectivity (4.27–4.56) of MINMs has been successfully achieved; the as-prepared MINMs also showed excellent regeneration and permselectivity of propranolol (16.01–18.34) by constructing large amounts of propranolol-imprinted sites on the Au/PDA-based surface. Therefore, under optimized conditions, MINMs would finally obtain reproducible, accessible, and stable membrane-based separation system of the propranolol molecule.

Graphical abstract: Multilevel/hierarchical nanocomposite-imprinted regenerated cellulose membranes for high-efficiency separation: a selective recognition method with Au/PDA-loaded surface

Supplementary files

Article information

Article type
Paper
Submitted
15 Mar 2021
Accepted
14 May 2021
First published
18 May 2021

Environ. Sci.: Nano, 2021,8, 1978-1991

Multilevel/hierarchical nanocomposite-imprinted regenerated cellulose membranes for high-efficiency separation: a selective recognition method with Au/PDA-loaded surface

M. Yan, Y. Wu, R. Lin, F. Ma and Z. Jiang, Environ. Sci.: Nano, 2021, 8, 1978 DOI: 10.1039/D1EN00238D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements