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- Title
Green and rapid synthesis of manganese–aluminum layered double hydroxide for highly selective extraction of Ag<sup>+</sup> over Cu<sup>2+</sup>.
- Authors
Zheng, Meiqi; Liu, Tingting; Yang, Yuyang; Li, Zhenhua; Kong, Xianggui; Shao, Mingfei; Duan, Xue
- Abstract
Highly effective and efficient recover of silver ions from aqueous media remains a serious task for public health and ecosystem protection. Herein, we report that this task can be addressed by in situ reduction of Ag+ to metallic silver (Ag0) with manganese–aluminum layered double hydroxide (MnAl–NO3–LDH) as framework, which can be synthesized with a facile, green, and scalable approach. As a result, the MnAl–NO3–LDH presents excellent rapid uptake of Ag+ with high uptake capacity (less than 2 min, 832.9 mg/g), outperforming most state-of-the-art adsorbents. Furthermore, the MnAl–NO3–LDH achieved excellent separation selectivity for Ag+ from Cu2+ at a high mass ratio of Cu2+/Ag+ (500:1). These superior properties coupled with low cost and environmentally benign nature make MnAl–NO3–LDH a promising candidate for recovery of Ag+ as well as other potential applications.
- Subjects
LAYERED double hydroxides; MANGANESE; SILVER ions; ECOSYSTEM health; ALUMINUM-zinc alloys
- Publication
Journal of Materials Science, 2023, Vol 58, Issue 10, p4428
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-023-08318-5