用于贵金属修复的胺基 MOF。

IF 4.3 2区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Inorganic Chemistry Pub Date : 2024-01-03 DOI:10.1021/acs.inorgchem.3c03654
Jade Nadine S. Ang, Ali Y. Chahine, Thomas J. Raeber, Stuart R. Batten and David R. Turner*, 
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引用次数: 0

摘要

由于电子工业的持续增长,高科技公司依靠开采和提取贵金属来满足公众需求。现代设备的高周转率产生了数量惊人的电子垃圾(e-waste),其中含有的贵金属多于开采的矿石,因此需要高效的回收程序。一种高度稳定的同哌嗪衍生镉-MOF--聚-[Cd(H2L)]-9H2O,具有质子化胺配体核心,以两重互穿三维框架的形式存在,并带有 N+-H 键所指向的一维通道。这些通道的几何形状似乎适合容纳方形金属酸盐配合物。在酸性条件下,对含有金、铜、镍和铂的 [MCl4]x- 阴离子进行了捕获和回收测试。Cd-MOF 对金具有显著的选择性和吸附性能,吸附容量为 25 mg g-1ads,并且在竞争性实验中对金的选择性明显优于对铜的选择性。金的吸附机制似乎主要是材料表面的物理吸附。
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Amine-Based MOF for Precious Metal Remediation

Due to the continuous growth rate of the electronic industry, hi-tech companies depend on mining and extracting precious metals to meet the public demand. The high turnover of modern devices generates an alarming amount of electronic waste (e-waste), which contains more precious metals than mined ores and therefore needs efficient recovery procedures. A highly stable homopiperazine-derived Cd-MOF, poly-[Cd(H2L)]·9H2O, with a protonated amine ligand core, exists as a twofold interpenetrated 3D framework with 1D channels into which the N+–H bond is directed. The geometry of these channels appears to be suitable to host square planar metalate complexes. Under acidic conditions, [MCl4]x anions containing Au, Cu, Ni, and Pt, representing common components of e-waste under extraction conditions, were tested for capture and recovery. Cd-MOF exhibits remarkable selectivity and uptake performance toward Au with an adsorbent capacity of 25 mg g–1ads and shows a marked selectivity for Au over Cu in competitive experiments. The adsorption mechanism of Au appears to be predominantly physical adsorption at the surface of the material.

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来源期刊
Inorganic Chemistry
Inorganic Chemistry 化学-无机化学与核化学
CiteScore
7.60
自引率
13.00%
发文量
1960
审稿时长
1.9 months
期刊介绍: Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.
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