Zwitterion Functionalized Graphene Oxide/Polyacrylamide/Polyacrylic Acid Hydrogels with Photothermal Conversion and Antibacterial Properties for Highly Efficient Uranium Extraction from Seawater

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(32)

Published: May 5, 2023

Abstract In this study, graphene oxide (GO) and polyacrylamide/polyacrylic acid (PAM/PAA) are used to prepare hydrogels with photothermal conversion properties for highly efficient uranium extraction from seawater. Zwitterionic 2‐methacryloyloxy ethyl phosphorylcholine (MPC) is introduced in the PAM/PAA/GO hydrogel obtain PAM/PAA/GO/MPC (PAGM), exhibiting good antibacterial properties. PAGM demonstrates specific adsorption of (VI) (U(VI)). Under light conditions, capacity reaches 196.12 mg g −1 (pH = 8, t 600 min, C 0 99.8 L , m/v 0.5 ). The only 160.29 under dark conditions 22.5% higher than that dark. process fitted using Langmuir pseudo‐second‐order models. Furthermore, exhibits repeatability stability after five adsorption–desorption cycles. a U(VI) 6.1 storage one month natural X‐ray photoelectron spectroscopy (XPS) results demonstrate coordination amino, carboxyl, hydroxyl groups primary mechanism adsorption. confirmed through detailed density functional theory calculations. durability, high efficiency, properties, Thus, it promising candidate

Language: Английский

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The construction of magnetic hydroxyapatite-functionalized pig manure-derived biochar for the efficient uranium separation

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 457, P. 141367 - 141367

Published: Jan. 6, 2023

Language: Английский

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Modified side-chain COFs construct built-in electric fields with low exciton binding energy for photo-reduced uranium

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 483, P. 149339 - 149339

Published: Feb. 5, 2024

Language: Английский

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Construction of hierarchical porous and polydopamine/salicylaldoxime functional zeolite imidazolate framework-8 via controlled etching for uranium adsorption

Materials Horizons, Journal Year: 2024, Volume and Issue: 11(14), P. 3364 - 3374

Published: Jan. 1, 2024

Efficient uranium extraction from seawater is critical for the development of nuclear industry. Herein, a polydopamine/salicylaldoxime decorated hierarchical zeolitic imidazolate framework-8 (H-PDA/SA-ZIF-8) constructed by using controlled etching process. Benefiting combination PDA/SA and (ZIF-8), as well process, H-PDA/SA-ZIF-8 possesses multiaffinity sites, excellent specific surface area (1234.92 m2 g-1), pore structure. The exhibits adsorption capacity (Qm = 869.6 mg selectivity, reusability in adsorption. process fits very with Langmuir isotherm model pseudo-second-order models, equilibrates within 20 min (C0 L-1). Furthermore, shows remarkable antibacterial ability. Impressively, to natural reaches 6.9 g-1 after circulation 15 days. Therefore, promising fascinating material seawater.

Language: Английский

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Combining Electrosorption and Electrochemical Reduction Mechanisms for Uranium Removal Using 1,2,3,4-Butane Tetracarboxylic Acid-Modified MIL-101: An In-Depth Exploration of Uranyl–Adsorbent Interactions

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 23, 2025

Extracting uranium from nuclear wastewater is vital for environmental and human health protection. However, despite progress in extraction, there remains a demand an optimized adsorbent with improved capability, efficiency, selectivity. To bridge this gap, 1,2,3,4-butane tetracarboxylic acid (BTCA)-modified MIL-101 was synthesized through simple hydrothermal reaction between amino-modified (MIL-101-NH2) BTCA. Density Functional Theory calculations validated the formation of stable coordination bonds hydrogen bond network, bolstering adsorption capacity. further enhance capacity, influence electric field on performance investigated. Studies revealed that uranyl ion removal under involves both electrosorption electroreduction pathways. This dual mechanism not only significantly increases capacity 221.1 mg g-1 to 331.4 but also improves efficiency. These insights our understanding effective foster development sustainable, ecofriendly technologies energy field.

Language: Английский

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Ultralight carbon aerogel composites derived from MOFs and cross-linked chitosan: Synthesis, characterization, and U(VI) adsorption

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 455, P. 140749 - 140749

Published: Dec. 5, 2022

Language: Английский

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Ion-imprinted nanocellulose aerogel with comprehensive optimized performance for uranium extraction from seawater

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 475, P. 146048 - 146048

Published: Sept. 13, 2023

Language: Английский

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Remediation of uranium(VI)-containing wastewater based on a novel graphene oxide/hydroxyapatite membrane

Journal of Membrane Science, Journal Year: 2023, Volume and Issue: 675, P. 121543 - 121543

Published: March 5, 2023

Language: Английский

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Construction of dopamine supported Mg(Ca)Al layered double hydroxides with enhanced adsorption properties for uranium

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 881, P. 163525 - 163525

Published: April 15, 2023

Language: Английский

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Synthesis of novel phosphate-based hypercrosslinked polymers for efficient uranium extraction from radioactive wastewater

Journal of Water Process Engineering, Journal Year: 2023, Volume and Issue: 53, P. 103582 - 103582

Published: March 7, 2023

Language: Английский

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