• 文献标题:   "Sandwich" copper nanoparticle @ graphene oxide composites: High-Temperature stability and long-term stable conductivity
  • 文献类型:   Article
  • 作  者:   LI XJ, NATSUKI J, NATSUKI T
  • 作者关键词:   copper nanoparticle, sandwich structure, air stability, hightemperature stability, stable conductivity
  • 出版物名称:   MATERIALS CHARACTERIZATION
  • ISSN:   1044-5803 EI 1873-4189
  • 通讯作者地址:  
  • 被引频次:   4
  • DOI:   10.1016/j.matchar.2021.110887 EA JAN 2021
  • 出版年:   2021

▎ 摘  要

To prevent CuNPs oxidation, we studied their interaction between graphene oxide (GO) sheets, forming CuNPs@GO composites via a liquid-phase reduction method, and resulting sandwich structures. The limited GO interlayer distance controls the size of CuNPs (similar to 10 nm diameter) during the reduction process. The large surface area of GO sheets provide enough space for CuNPs against their aggregation. To confirm the sandwich structure can protect CuNPs from oxidation, the air stability and high-temperature stability of CuNPs@GO composites were evaluated. The result shows that the composites exhibit no oxidation sign following exposure to dry air for at least 21 weeks or 90 degrees C. Simultaneously, the synthesized composites show long-term stable conductivity. This sandwich structure composites provide a potential research direction for fabricating CuNPs with high antioxidant stability and long-term stable conductivity.