Layered Control of Woven Graphene Tubes and Their Anti-Corrosion Behavior
An T. Nguyen1*, Wei-Cheng Lai1, Bao Dong To1, Duc Dung Nguyen2, Hung-Chih Kan1, Chia-Chen Hsu1
1Department of Physics, National Chung Cheng University, Chiayi, Taiwan
2Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan
* presenting author:An Nguyen, email:anhydrit210@gmail.com
Considerable attention has been given to graphene grown on planar substrates, and, furthermore, the formation of tubular graphene (TG) has recently been explored. [1-3] In this study, we successfully fabricated macroscopic, freestanding, and tubular graphene (TG) structures through a versatile and robust process based on rapid annealing of cellulose acetate (CA) on nickel templates. Tubular graphene (TG) structures with high graphitic crystallinity, and strong electrical conductivity were fabricated as woven tubes with controllable diameters of approximately 25-50 µm and uniform wall-thicknesses in the range of 1-3 nm. The layers of TGs were controlled by adjusting the CA membrane amount. The effects of processing parameters, such as annealing temperature, annealing time, and amount of CA, on the graphene properties of these architectures were investigated and are discussed. Our macroscopic, lightweight, and easily handled TG structures are useful as building blocks for multifunctional architectures. They are more convenient than those prepared using carbon nanotubes or fibers. The study demonstrated the protecting ability of graphene against corrosion in acidic environment; we herein investigated the graphene behavior as an anticorrosive layer, estimated the degree of corrosion inhibition, and studied the ways to enhance this property.

References:
[1] H. Bi, I-W. Chen, T. Lin, and F. Huang, Adv. Mater. 2015, 27, 5943–5949.
[2] R. Wang, Y. Hao, Z. Wang, H. Gong, and J. T. L. Thong, Nano Lett. 2010, 10, 4844–4850.
[3] D. D. Nguyen, S. Suzuki, S. Kato, B. D. To, C. C. Hsu, H. Murata, E. Rokuta, N.-H. Tai, and M. Yoshimura, ACS Nano 2015, 9, 3206–3214.


Keywords: Graphene tube, Graphene layer, thermal annealing, macroscopic, anti-corrosion