Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentská 1402/2, Liberec 461 17, Czech Republic.
Chem Commun (Camb). 2021 Aug 14;57(63):7814-7817. doi: 10.1039/d1cc01946e. Epub 2021 Jul 16.
The effect of the zeta potential of nano zero-valent iron (nZVI) and carbocatalyst on the activation of persulfate was investigated. The oxidation experiments were performed on three different compounds, with variously modified nZVI and three distinct carbocatalysts. From the obtained results, an evident linear correlation between nanoparticles' zeta potential and reaction rate constants of these three compounds oxidation may be observed. This phenomenon is not mechanism-specific and occurs for the radical and non-radical processes. The present work indicates the critical influence of the surface charge of nZVI and carbocatalysts on the persulfate catalytic activation.
研究了纳米零价铁 (nZVI) 和碳催化剂的 ζ 电位对过硫酸盐活化的影响。在三种不同的化合物上进行了氧化实验，这些化合物使用了不同修饰的 nZVI 和三种不同的碳催化剂。从获得的结果中，可以观察到纳米粒子 ζ 电位与这三种化合物氧化反应速率常数之间存在明显的线性相关性。这种现象不是特定于机制的，而是发生在自由基和非自由基过程中。本工作表明 nZVI 和碳催化剂的表面电荷对过硫酸盐催化活化有重要影响。
