Dataset for Sulfidation of air-stable iron nanoparticles: A novel strategy how to boost their reactivity demonstrated on Cr(VI) reduction

This repository contains data from the manuscript: Víchová, V., Oborná, J. K., Petr, M., Soukupová, J., Pechancová, R., Pluháček, T., & Filip, J. (2024). Sulfidation of air-stable iron nanoparticles: A novel strategy how to boost their reactivity demonstrated on Cr (VI) reduction. Journal of Water Process Engineering, 67, 106246. https://doi.org/10.1016/j.jwpe.2024.106246 Abstract of the manuscript: Sulfidated zero-valent iron nanoparticles (S-nZVI) have been extensively studied as environmentally promisingalternative material, which enables reduction of variety of extremely dangerous pollutants directly in theenvironment. However, synthesis and manipulation with these extremely reactive/pyrophoric nZVI particlesrepresents a challenge and requires special precautions. In this study, we report a synthesis of S-nZVI from airstablecore-shell nZVI, which reactivity with contaminants and properties are comparable with the commonlyprepared S-nZVI particles (where the precursor was bare/pyrophoric nZVI particles). The undeniable noveltydwells in the simplicity of the synthetic process, which ensures consequential safe and easy handling, manipulation,and application of S-nZVI particles. This material, especially highly effective against halogenated organiccompounds and heavy metals, was characterized in detail and its advanced characteristics were evaluated in theprocess of hexavalent chromium (Cr(VI)) reduction from model aqueous solutions and polluted groundwater.The results offer valuable insights into the preparation of a novel nanomaterial with high application potential inthe effective degradation of heavy metals in polluted water. Overall, the novel way prepared S-nZVI particles,designed for the potential large-scale production, eliminates the drawbacks of S-nZVI synthesized from bare nZVIparticles and offers the effective material suitable for any on-site application.本仓库收录了来自下述学术论文的数据集： Víchová, V., Oborná, J. K., Petr, M., Soukupová, J., Pechancová, R., Pluháček, T., & Filip, J. (2024). 空气稳定铁纳米颗粒的硫化：以六价铬还原为例提升反应活性的新策略. 《水过程工程学报》, 67, 106246. https://doi.org/10.1016/j.jwpe.2024.106246 论文摘要： 硫化零价铁纳米颗粒（sulfidated zero-valent iron nanoparticles, S-nZVI）作为具有环境应用前景的备选材料已被广泛研究，其可直接在环境中还原多种极具危害性的污染物。然而，这类具有极高反应活性/自燃性的零价铁纳米颗粒（zero-valent iron nanoparticles, nZVI）的合成与操作仍存在挑战，需采取特殊防护措施。本研究报道了一种以空气稳定核壳型nZVI为前驱体制备S-nZVI的方法，该方法所得产物的污染物反应活性与性能，可与以裸露/自燃型nZVI为前驱体制备的常规S-nZVI颗粒相媲美。本研究的核心创新点在于合成工艺的简便性，这可确保S-nZVI颗粒的安全、便捷操作与应用。该材料对卤代有机化合物与重金属具有优异的去除效果，本研究对其进行了详细表征，并通过模型水溶液与污染地下水中的六价铬（Cr(VI)）还原实验评估了其性能优势。研究结果为制备一种在污染水体重金属高效降解领域具有高应用潜力的新型纳米材料提供了宝贵参考。总体而言，本研究开发的新型制备工艺所得到的S-nZVI颗粒适用于规模化生产，可克服以裸露nZVI为前驱体合成的S-nZVI的缺陷，提供一种适用于各类现场应用的高效材料。