碳包覆金属纳米微粒既可以避免金属纳米微粒的氧化,又能保持其固有性能不变,其潜在科研和应用价值引起了研究者的广泛关注。本文介绍了电弧法制备碳包覆金属纳米微粒的原理,综合评述了碳包覆金属纳米微粒的电弧法制备技术的国内外研究现状,讨论了金属与碳作用后的反应路径,产物类型以及碳包覆金属纳米微粒的形成机理。
The metal nanocrystals in carbon-coated particle could be protected from the environment and still retain their intrinsic properties,which has received considerable attention in recent years for both its scientific and technological implications.The working principle of preparing carbon-coated metal nanoparticles by arc discharge method was introduced.The research and development of the preparation method were briefly reviewed.The reaction path of metal and carbon,the types of the result product,and the formation mechanism of the carbon encapsulation were discussed.