Chemically Robust Cationic Porous Organic Polymer (POP) for Selective Detection and Removal of ReO4- as a Surrogate of Radioactive 99TcO4.

Autor: Biswas K; IISER P: Indian Institute of Science Education Research Pune, Chemistry, INDIA., Dam GK; IISER P: Indian Institute of Science Education Research Pune, Chemistry, 411008, Pune, INDIA., Mahanta S; IISER P: Indian Institute of Science Education Research Pune, Chemistry, INDIA., Roy A; IISER P: Indian Institute of Science Education Research Pune, Chemistry, INDIA., Parmar SV; Ashoka University, Chemistry, INDIA., Avasare V; Ashoka University, Chemistry, INDIA., Ghosh SK; IISER Pune, Chemistry, IISER PUNE , HOMIBHABA ROAD, NCL COLONY, 411008, PUNE, INDIA.
Jazyk: angličtina
Zdroj: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2024 Dec 23, pp. e202403931. Date of Electronic Publication: 2024 Dec 23.
DOI: 10.1002/chem.202403931
Abstrakt: The efficient removal of 99TcO4- from alkaline nuclear waste is vital for optimizing nuclear waste management and safeguarding the environment. However, current state-of-the-art sorbent materials are constrained by their inability to simultaneously achieve high alkali resistance, rapid adsorption kinetics, large adsorption capacity, and selectivity. In this study, we synthesized a urea-rich cationic porous organic polymer, IPM-403, which demonstrates exceptional chemical stability, ultrafast kinetics (~92% removal within 30 seconds), high adsorption capacity (664 mg/g), excellent selectivity, along with multiple-cycle recyclability (up to 7 cycles), making it highly promising for the removal of ReO4- (surrogate of 99TcO4-) from nuclear wastewater. Notably, after exposure to 1 M NaOH solution for 24 hours, IPM-403 maintained a high adsorption capacity of 421.3 mg/g for ReO4-. Furthermore, IPM-403 acts as an efficient sensor for ReO4-, exhibiting a turn-on response and a detection limit as low as 78.8 ppb.
(© 2024 Wiley‐VCH GmbH.)
Databáze: MEDLINE
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