Issue 39, 2020

Millimeter-sized Bi2S3@polyacrylonitrile hybrid beads for highly efficient iodine capture

Abstract

Iodine (I2) capture and storage is very important in many industrial practices. Herein, we demonstrate strong iodine (I2) adsorption using millimeter-sized spherical bismuth sulfide@polyacrylonitrile (Bi2S3@PAN) hybrid beads. Our findings showed that the iodine capture capacity of Bi2S3@PAN was 986 mg g−1, which could reach approximately 4.0-fold that of commercial silver-exchanged zeolite (AgZ). Besides maintaining the crystallinity of the embedded Bi2S3 powder in the polyacrylonitrile matrix, the hybrid beads exhibited high capacity and a fast I2 absorption rate. Through characterization, we revealed that the adsorption of iodine on Bi2S3@PAN was mainly chemical adsorption (the formation of thermodynamically stable BiI3). Overall, the merits of the cost-effective process, capability of achieving scale-up of preparation, and the good performance in iodine capture suggest that Bi2S3@PAN may be considered as a promising candidate for the removal of radioactive iodine from reprocessing plant off-gas streams.

Graphical abstract: Millimeter-sized Bi2S3@polyacrylonitrile hybrid beads for highly efficient iodine capture

Supplementary files

Article information

Article type
Paper
Submitted
27 Jun 2020
Accepted
29 Aug 2020
First published
24 Sep 2020

New J. Chem., 2020,44, 16759-16768

Millimeter-sized Bi2S3@polyacrylonitrile hybrid beads for highly efficient iodine capture

Q. Yu, X. Jiang, Z. Cheng, Y. Liao, Q. Pu and M. Duan, New J. Chem., 2020, 44, 16759 DOI: 10.1039/D0NJ03229H

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