Mechanically and Chemically Robust Lanmodulin-Functionalized Silk Sponges for Rare Earth Element Sequestration.

IF 5.4 2区医学 Q2 MATERIALS SCIENCE, BIOMATERIALS

ACS Biomaterials Science & Engineering Pub Date : 2025-06-25 DOI:10.1021/acsbiomaterials.5c00382

Logan D Morton, Ryan A Scheel, Jugal Kishore Sahoo, Julian B Gilbert, Joseph A Cotruvo, Yongqin Jiao, Dan M Park, David L Kaplan

引用次数: 0

Abstract

The extraction of rare-earth elements (REEs) from low-grade sources like electronic waste (E-waste) could supplement current unsustainable mining practices. REEs are crucial for various industries, but supply struggles to meet growing demand. Herein, we present an environmentally friendly method for REE extraction using silk protein sponges functionalized with lanmodulin (LanM), a protein that selectively binds REEs. These sponges are relatively facile to fabricate and scale, while offering highly selective REE binding. The REEs can then be recovered via simple acid leaching, allowing sponge reuse for multiple cycles as well as specific desorption of different REEs by changing the pH of the desorption buffer. This method avoids harmful solvents used in traditional extraction and enables recycling of REEs from industrial and E-waste.

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用于稀土元素隔离的具有机械和化学稳定性的lanmodul素功能化丝绸海绵。

从电子垃圾等低品位资源中提取稀土元素（ree）可以补充目前不可持续的采矿实践。稀土元素对各个行业都至关重要，但供应难以满足不断增长的需求。在此，我们提出了一种环保的提取稀土元素的方法，使用具有选择性结合稀土元素的蛋白lanmodulin （LanM）功能化的丝蛋白海绵。这些海绵相对容易制造和缩放，同时提供高选择性的稀土结合。然后，稀土元素可以通过简单的酸浸回收，允许海绵重复使用多次循环，以及通过改变解吸缓冲液的pH值来特定解吸不同的稀土元素。该方法避免了传统提取中使用的有害溶剂，并使从工业和电子废物中回收稀土成为可能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Biomaterials Science & Engineering Materials Science-Biomaterials

CiteScore

10.30

自引率

3.40%

发文量

413

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