Pozzi Maria, Jonak Dutta Sarodi, Kuntze Mia, Bading Jeannette, Rüßbült Johanna S, Fabig Cornelius, Langfeldt Malte, Schulz Florian, Horcajada Patricia, Parak Wolfgang J
Fachbereich Physik, Universität Hamburg, 22607 Hamburg, Germany.
Ratsgymnasium Rotenburg, 27356 Rotenburg, Germany.
J Chem Educ. 2024 Jul 3;101(8):3146-3155. doi: 10.1021/acs.jchemed.4c00089. eCollection 2024 Aug 13.
When bulk materials are reduced in size to the nanometer scale, in particular, their surface-to-volume ratio increases drastically. We introduce some simple experiments on how to visualize this concept to students in the framework of a laboratory class. In the same context, experiments to demonstrate the consequences of this on the properties of the materials are introduced. This will involve solubility and chemical surface reactivity of the materials and properties originated from the surface. In the framework of their chemical reactivity, potential benefits and threads of nanomaterials due to their high surface-to-volume ratio will be discussed, such as applications as catalysts and their impact on nanotoxicology.
当块状材料的尺寸减小到纳米尺度时，其表面积与体积之比会急剧增加。我们介绍一些简单的实验，以便在实验课的框架内向学生直观展示这一概念。在相同背景下，还介绍了一些实验来证明这对材料性能的影响。这将涉及材料的溶解性、化学表面反应性以及源自表面的性质。在其化学反应性的框架内，将讨论由于纳米材料高表面积与体积之比而带来的潜在益处和风险，例如作为催化剂的应用及其对纳米毒理学的影响。
