Next Article in Journal
Real-Time In Vivo Imaging of Mouse Left Ventricle Reveals Fluctuating Movements of the Intercalated Discs
Previous Article in Journal
Green and Economic Fabrication of Zinc Oxide (ZnO) Nanorods as a Broadband UV Blocker and Antimicrobial Agent
Open AccessArticle

Carbonized Dehydroascorbic Acid: Aim for Targeted Repair of Graphene Defects and Bridge Connection of Graphene Sheets with Small Size

1
School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
2
South China University of Technology-Zhuhai Institute of Modern Industrial Innovation, Zhuhai 519000, China
3
School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, China
*
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(3), 531; https://doi.org/10.3390/nano10030531
Received: 4 February 2020 / Revised: 5 March 2020 / Accepted: 12 March 2020 / Published: 16 March 2020
The thermal dissipation issue of electronics devices becomes increasingly prominent as they evolve to smaller sizes and more complicated structures. Therefore, the development of materials with excellent heat conduction properties and light weight turns out to be an urgent demand to solve the heat transfer problem of electronics devices with high performance. For this purpose, we put forward an innovative strategy that carbonized dehydroascorbic acid (CDA) be applied to graphene layers for the targeted repair of defects among them and bridge connection of the layers to produce graphene heat conduction materials with excellent properties. Firstly, hydrogen bonds formed from dehydroascorbic acid (DHAA, products of the oxidation of vitamin C) and each of ketone, carboxyl, and oxhydryl groups on graphene layers were absorbed at targeted locations where oxidation graphene produces defects, then targeted repair was conducted for those defects to be filled and for the graphene layers of a small size to grow into large sheet materials with improved continuity by CDA generated in thermally pressing reduction reaction at 800 °C. In our investigation, the planar thermal conductivity of rGO/VC membrane reached 1031.9 ± 10.2 Wm−1K−1, while the added mass content of vitamin C (VC) was 15%. Being a reference, the planar thermal conductivity of primitive graphene membrane was only 610.7 ± 11.7 Wm−1K−1. View Full-Text
Keywords: targeted repair; oxidized graphene; carbonized dehydroascorbic acid; thermal reduction; thermal conductivity targeted repair; oxidized graphene; carbonized dehydroascorbic acid; thermal reduction; thermal conductivity
Show Figures

Graphical abstract

MDPI and ACS Style

Li, J.; Lai, J.; Liu, J.; Lei, R.; Chen, Y. Carbonized Dehydroascorbic Acid: Aim for Targeted Repair of Graphene Defects and Bridge Connection of Graphene Sheets with Small Size. Nanomaterials 2020, 10, 531.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop