Construction of Diamond/Graphene Composite Structure via a Low-Temperature Heat Treatment

IF 1.2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Superhard Materials Pub Date : 2024-09-06 DOI:10.3103/S1063457624040051

Danhui Han, Junlong Liu, Chong Peng, Baoyan Liang

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Abstract

A diamond/graphene composite structure can be obtained using graphene oxide (GO) to undergo a significant thermal reduction reaction at approximately 200°C. The prepared composites were characterized via X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopy. The effects of different particle sizes and diamond contents on the products’ phase composition and microstructure were studied. Results indicate that GO underwent a significant thermal reduction reaction at approximately 200°C. Most GO materials were reduced to graphene. They underwent expansion and were peeled off into an organ-like shape. A graphene coating was formed on the surface of diamond particles via a simple heat treatment from the mixtures of diamond and GO powders. The coating effect of large diamond particles was poor because of their high inertness. A quasi core–shell structure of diamond/graphene composite structure can be obtained using fine-grained diamonds.

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通过低温热处理构建金刚石/石墨烯复合结构

摘要利用氧化石墨烯（GO）在约 200°C 的温度下发生显著的热还原反应，可获得金刚石/石墨烯复合结构。通过 X 射线衍射、扫描电子显微镜、透射电子显微镜、X 射线光电子能谱和傅立叶变换红外光谱对制备的复合材料进行了表征。研究了不同粒度和金刚石含量对产品相组成和微观结构的影响。结果表明，GO 在大约 200°C 的温度下发生了显著的热还原反应。大多数 GO 材料被还原成石墨烯。这些石墨烯发生膨胀并被剥离成类似器官的形状。通过简单的热处理，金刚石和 GO 粉末的混合物在金刚石颗粒表面形成了石墨烯涂层。大颗粒金刚石由于惰性较高，涂层效果较差。使用细粒度金刚石可以获得准核壳结构的金刚石/石墨烯复合结构。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Superhard Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

1.80

自引率

66.70%

发文量

审稿时长

2 months

期刊介绍： Journal of Superhard Materials presents up-to-date results of basic and applied research on production, properties, and applications of superhard materials and related tools. It publishes the results of fundamental research on physicochemical processes of forming and growth of single-crystal, polycrystalline, and dispersed materials, diamond and diamond-like films; developments of methods for spontaneous and controlled synthesis of superhard materials and methods for static, explosive and epitaxial synthesis. The focus of the journal is large single crystals of synthetic diamonds; elite grinding powders and micron powders of synthetic diamonds and cubic boron nitride; polycrystalline and composite superhard materials based on diamond and cubic boron nitride; diamond and carbide tools for highly efficient metal-working, boring, stone-working, coal mining and geological exploration; articles of ceramic; polishing pastes for high-precision optics; precision lathes for diamond turning; technologies of precise machining of metals, glass, and ceramics. The journal covers all fundamental and technological aspects of synthesis, characterization, properties, devices and applications of these materials. The journal welcomes manuscripts from all countries in the English language.