Lützenkirchen Johannes, Monjezi Bahram Hosseini, Kosmulski Marek
Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344 Germany
Lublin University of Technology Nadbystrzycka 38 Lublin 20618 Poland.
RSC Adv. 2025 May 23;15(22):17248-17254. doi: 10.1039/d5ra01865j. eCollection 2025 May 21.
The work mentioned in the title of this comment appears to establish a relationship between the point of zero charge of oxide minerals (anatase, goethite, and others) and particle size. While the methods to establish the point of zero charge used in the experimental work of the paper are non-standard and need to be critically assessed, the apparent increase of the point of zero charge with particle size is clearly not a general feature and some literature data observed by standard methods for measuring points of zero charge actually suggest the absence of a universal trend. Since part II of article series (, 2024, 14, 30317) also builds on this apparent relationship, we believe readers should be cautioned about it. The comment discusses the issues in more detail.
本评论标题中提及的研究似乎确立了氧化物矿物（锐钛矿、针铁矿等）的零电荷点与粒径之间的关系。虽然该论文实验工作中用于确定零电荷点的方法不标准，需要严格评估，但零电荷点随粒径的明显增加显然并非普遍特征，一些通过测量零电荷点的标准方法观察到的文献数据实际上表明不存在普遍趋势。由于该系列文章的第二部分（，2024，14，30317）也基于这种明显的关系，我们认为应该提醒读者注意这一点。本评论将更详细地讨论这些问题。
