木质素衍生的可持续纳米平台:高效去除染料的多功能解决方案。

IF 7.5 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
ChemSusChem Pub Date : 2024-06-20 DOI:10.1002/cssc.202400841
Maryam Rahimihaghighi, Prof. Matteo Gigli, Dr. Valerio C. A. Ficca, Prof. Ernesto Placidi, Dr. Massimo Sgarzi, Prof. Claudia Crestini
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引用次数: 0

摘要

与传统的非生物基吸附剂相比,木质素是一种具有成本效益且对环境无害的水处理替代品。这项研究发现了木质素纳米颗粒(LNPs)意想不到的多功能特性。通过简单的物理过程制备的 LNPs 首次被证明是一种多功能材料,能够在紫外线照射下吸附和光降解水介质中的亚甲基蓝(MB)。此外,合成 LNPs 所采用的合成方法以及 LNPs 的表面特性对其性能有很大影响。更具体地说,与其他木质素吸附剂相比,通过溶剂-反溶剂纳米沉淀法(SLNPs)获得的 LNPs 具有最高的甲基溴吸附性能(98% 的去除率),最大吸附容量达到 43 mg g-1,而且吸附动力学速度最快。相反,水相 LNPs(HLNPs)表现出卓越的光催化活性,在紫外线照射 6 小时后,甲基溴的降解率达到 98%,而且能够轻松回收和重复使用。 目前的研究工作为利用 LNPs 作为高效的多功能材料铺平了道路,这种材料能够同时对染料污染物进行吸附和光催化降解,从而建立一个可持续的生物基水处理平台。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Lignin-Derived Sustainable Nano-Platforms: A Multifunctional Solution for an Efficient Dye Removal

Lignin-Derived Sustainable Nano-Platforms: A Multifunctional Solution for an Efficient Dye Removal

In contrast to conventional non-biobased adsorbents, lignin emerges as a cost-effective and environmentally benign alternative for water treatment. This study identifies unexpected and unpredicted multifunctional properties of lignin nanoparticles (LNPs). LNPs, which are prepared by simple physical processes, demonstrated for the first time to behave as multifunctional materials able to adsorb and photodegrade methylene blue (MB) in aqueous medium upon UV irradiation. Furthermore, the synthetic approach adopted to synthesize LNPs – and therefore their surface properties – strongly affects their performances. More specifically, LNPs obtained by solvent-antisolvent nanoprecipitation (SLNPs) show the highest MB adsorption properties (98 % removal), reaching a maximum adsorption capacity of 43.0 mg g−1, and the fastest adsorption kinetics with respect to other lignin-based adsorbents. Conversely, hydrotropic LNPs (HLNPs) exhibit exceptional photocatalytic activity, resulting in 98 % MB degradation over 6 hours of UV irradiation, combined with the ability to be easily recycled and reused. The present effort paves the way for the use of LNPs as efficient multifunctional materials able to perform concurrently adsorption and photocatalytic degradation of dye pollutants, toward the creation of a sustainable biobased water treatment platform.

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来源期刊
ChemSusChem
ChemSusChem 化学-化学综合
CiteScore
15.80
自引率
4.80%
发文量
555
审稿时长
1.8 months
期刊介绍: ChemSusChem Impact Factor (2016): 7.226 Scope: Interdisciplinary journal Focuses on research at the interface of chemistry and sustainability Features the best research on sustainability and energy Areas Covered: Chemistry Materials Science Chemical Engineering Biotechnology
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