Silver Nanoparticles Prepared by One-Step Reaction via Reducibility of a Metal–Organic Framework to Remove the Toxic Bromine Ions,Journal of Chemical & Engineering Data

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Silver Nanoparticles Prepared by One-Step Reaction via Reducibility of a Metal–Organic Framework to Remove the Toxic Bromine Ions
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-11-11 , DOI: 10.1021/acs.jced.0c00774
Ting Wang ₁ , Huifang Zhao ₁ , Xudong Zhao ₂ , Qingyuan Yang ₁ , Dahuan Liu ₁

Affiliation

In this work, an aluminum-based metal–organic framework (MOF), CAU-1-(OH)₂, was utilized as the reduction precursor for the first time to prepare an adsorbent with well-dispersed reduced silver (Ag⁰) nanoparticles. The synthesized Ag⁰/carbon nanoparticle (Ag⁰/C-NP) is composed of the carbon-based matrix and Ag nanoparticles with a uniform size of 5–10 nm. Thanks to the feature of the loaded Ag nanoparticles, the obtained material exhibits a high adsorption capacity of bromide (Br^–) (177.4 mg g^–1), fast adsorption kinetics (∼1 h for reaching adsorption saturation), and good anti-interference ability, which is superior to those of the original MOF and other reported adsorbents. The adsorption isotherms and kinetics were fitted well by using the Langmuir model, the adsorption isotherm regional analysis (Arian) model, and the pseudo-second-order kinetic model. Therefore, these results demonstrate that not only Ag⁰/C-NP is a promising material for efficient removal of Br^– but also provides a convenient and universal method for developing adsorbents with the help of reductive features of MOFs.

中文翻译：

通过金属-有机骨架的还原性一步一步反应制备的银纳米颗粒，以去除有毒的溴离子

在这项工作中，铝基金属有机骨架（MOF）CAU-1-（OH）₂首次用作还原前体，以制备具有分散良好的还原银（Ag ⁰）纳米粒子的吸附剂。合成的Ag ⁰ /碳纳米颗粒（Ag ⁰ / C-NP）由碳基基质和均匀大小为5-10 nm的Ag纳米颗粒组成。由于负载的银纳米颗粒的特性，所获得的材料对溴化物（Br ^-）（177.4 mg g ^–1）的吸附能力高。），快速的吸附动力学（约1小时达到吸附饱和）和良好的抗干扰能力，优于原始的MOF和其他报道的吸附剂。使用Langmuir模型，吸附等温线区域分析（Arian）模型和伪二级动力学模型，可以很好地拟合吸附等温线和动力学。因此，这些结果表明，不仅银⁰ / C-NP为有效地除去Br中有前途的材料^-也提供了用于与MOF的还原功能的帮助显影吸附剂方便且通用的方法。

更新日期：2021-01-14

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