A hybrid nanomaterial composed of detonation nanodiamonds-multi-walled carbon nanotubes (DND-CNT) in powdered form and the form of stable recoverable water nanofluid was obtained. The ability to obtain a hybrid material in the form of powder, as well as in the form of an aqueous suspension opens the way for the creation of new composite materials based on metals and polymers, as well as new types of nanofluids. Particle size in water suspension was investigated by dynamic light scattering (DLS) method and has been shown that while the original DND was agglomerates with the particle size about one μm, the particles size of a hybrid material in water suspension was 40-60 nm. Such result was achieved by growing multi-walled carbon nanotubes on the surface of nanodiamonds aggregates coated with a metal catalyst using catalyst chemical vapor deposition (CCVD) method for nanotubes growth. The resulting nanomaterial is a powdered hybrid material obtained based on a scalable technology. The measured electrical conductivity of the water suspension amounted to 35 μS/cm what is 6 times higher than the electrical conductivity of the pure distilled water.

中文翻译：

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粉末杂化纳米材料：爆轰纳米金刚石-碳纳米管及其稳定的可逆水纳米流体。

获得了一种混合纳米材料，该材料由粉末形式的爆轰纳米金刚石-多壁碳纳米管（DND-CNT）和稳定的可回收水纳米流体组成。获得粉末形式以及水性悬浮液形式的杂化材料的能力为创建基于金属和聚合物的新型复合材料以及新型纳米流体开辟了道路。通过动态光散射（DLS）方法研究了水悬浮液中的粒径，结果表明，虽然原始DND是附聚体，粒径约为1μm，但水悬浮液中杂化材料的粒径为40-60 nm。通过使用用于纳米管生长的催化剂化学气相沉积（CCVD）方法，在涂覆有金属催化剂的纳米金刚石聚集体的表面上生长多壁碳纳米管，可以实现该结果。所得纳米材料是基于可扩展技术获得的粉末状混合材料。测得的水悬浮液的电导率总计为35μS/ cm，是纯蒸馏水的电导率的6倍。