Sousa Samuel M, Morais Helane L O, Santos Joyce C C, Barboza Ana Paula M, Neves Bernardo R A, Pinto Elisângela S, Prado Mariana C
Campus Santa Luzia, Instituto Federal de Minas Gerais, R. Érico Veríssimo, 317, Santa Luzia - MG, 33115-390, Brazil.
Centro de Desenvolvimento da Tecnologia Nuclear CDTN/CNEN, Avenida Antônio Carlos, 6627, Belo Horizonte, Minas Gerais 31270-901, Brazil.
Beilstein J Nanotechnol. 2023 Jan 9;14:68-78. doi: 10.3762/bjnano.14.8. eCollection 2023.
Industrial applications of nanomaterials require large-scale production methods, such as liquid phase exfoliation (LPE). Regarding this, it is imperative to characterize the obtained materials to tailor parameters such as exfoliation medium, duration, and mechanical energy source to the desired applications. This work presents results of statistical analyses of talc flakes obtained by LPE in four different media. Talc is a phyllosilicate that can be exfoliated into nanoflakes with great mechanical properties. Sodium cholate at two different concentrations (below and at the critical micelar concentration), butanone, and Triton-X100 were employed as exfoliation medium for talc. Using recent published statistical analysis methods based on atomic force microscopy images of thousands of flakes, the shape and size distribution of nanotalc obtained using the four different media are compared. This comparison highlights the strengths and weaknesses of the media tested and hopefully will facilitate the choice of the medium for applications that have specific requirements.
纳米材料的工业应用需要大规模生产方法，如液相剥离法（LPE）。鉴于此，必须对所获得的材料进行表征，以便根据所需应用调整诸如剥离介质、持续时间和机械能来源等参数。这项工作展示了通过LPE在四种不同介质中获得的滑石薄片的统计分析结果。滑石是一种层状硅酸盐，可剥离成具有优异机械性能的纳米薄片。两种不同浓度（低于和处于临界胶束浓度）的胆酸钠、丁酮和Triton-X100被用作滑石的剥离介质。使用基于数千个薄片的原子力显微镜图像的最新统计分析方法，比较了使用四种不同介质获得的纳米滑石的形状和尺寸分布。这种比较突出了所测试介质的优缺点，并有望为有特定要求的应用促进介质的选择。
