爆轰纳米金刚石水分散体的结构形成：实验与理论

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials Pub Date : 2025-05-06 DOI:10.1016/j.diamond.2025.112418

Anna V. Volkova, Daniil A. Savelev, Vitalii A. Vodolazhskii, Evgenia V. Golikova, Lyudmila E. Ermakova

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引用次数: 0

摘要

实验和理论研究了不同固体含量（0.2-2 wt%）和电解质浓度（10−4 М - 10−1 M NaCl）对爆轰纳米金刚石（DND）多分散水分散体结构形成的影响。通过旋转粘度法测定了其粘度，并对其沉降类型进行了研究。考虑到纳米粒子的多孔结构，在假设表面电荷恒定的前提下，采用有效Hamaker常数，在经典DLVO理论和扩展DLVO理论的框架下，计算了单粒径和不同粒径纳米粒子初生聚集体的对相互作用能。利用计算结果绘制了三种粒子的总势相互作用曲线。研究表明，在扩展的DLVO理论框架内考虑集体相互作用的计算可以很好地用于改进实验数据和预测集中的DND色散的稳定性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Structure formation in concentrated aqueous dispersions of detonation nanodiamond: experiment and theory

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Structure formation in concentrated aqueous dispersions of detonation nanodiamond: experiment and theory

Structure formation in concentrated polydisperse aqueous dispersions of detonation nanodiamond (DND) depending on solid content (0.2–2 wt%) and electrolyte concentration (10⁻⁴ М – 10⁻¹ M NaCl) was studied experimentally and theoretically. Viscosity was determined by the rotational viscometry along with the study of sedimentation type. The energy of pair interaction of one-sized and different-sized primary aggregates of nanoparticles is calculated within the framework of the classical and extended DLVO theory on the assumption of a constant surface charge using the effective Hamaker constant, which takes into account the porous structure of the aggregate. The calculation results were used to plot the total potential interaction curves of the three particles. It has been shown that calculations taking into account collective interactions within the framework of the extended DLVO theory may well be used to refine experimental data and predict the stability of concentrated DND dispersions.

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来源期刊

Diamond and Related Materials 工程技术-材料科学：综合

CiteScore

6.00

自引率

14.60%

发文量

702

审稿时长

2.1 months

期刊介绍： DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices. The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.