Abstract
Vertical graphene nanosheets (VGSs) are a kind of graphene materials, which retain the inherent advantages of graphene and effectively overcome the stacking bottleneck displayed by traditional graphene. The scalable production of VGSs may help the development of devices such as field-effect transistors, sensors, biomedical materials, electrochemical energy storage, thermal conductive materials and catalyst supports. The thermal chemical vapor deposition (CVD) approach has become a mature, efficient and highly valuable industrial strategy for VGSs fabrication. This technique imposes no restrictions on the morphology and size of the substrate and has high yield and low equipment cost, making it suitable for scalable industrial applications. Here we detail the step-by-step instructions for growing VGSs on a variety of common substrates such as carbon nanofibers, carbon fibers and Si particles using the thermal CVD approach. The scalability of thermal CVD could help advance the development of industrial applications of VGSs composite materials. The procedure requires a total of 136 h and 45 min to successfully produce VGSs on C and Si substrates, followed by a comprehensive characterization of the nanosheets. The procedure is suitable for users with expertise in chemistry or materials science.
Key points
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In this Protocol, we describe the synthesis of vertical graphene nanosheets (VGSs) via scalable thermal chemical vapor deposition using a tubular furnace in which C or Si materials are placed for heating, with CH4 and H2 introduced at high temperatures to enable a chemical reaction that in situ forms VGSs on the substrate surface.
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The VGSs exhibit high conductivity, sensitivity and biocompatibility, making them suitable for applications in diverse fields.
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Acknowledgements
All authors acknowledge supports from the National Natural Science Foundation of China (grant no. 52172084), the Talent Recruitment Project of Guangdong Province (grant no. 2019QN01C883) and the Shenzhen Science and Technology Program (grant nos. RCJC20231211090017038 and JCYJ20220818102402004).
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Q.W. drafted the manuscript. X.J. and P.Y. discussed the section of anticipated results. Y.C. and Z.L. contributed to the collection and adaption of the figures. Y.H. and J.Y. developed the protocol and modified the manuscript.
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Key references
Zeng, J. et al. Adv. Mater. 30, 1705380 (2018): https://doi.org/10.1002/adma.201705380
Ji, X. et al. Nat. Commun. 12, 1380 (2021): https://doi.org/10.1038/s41467-021-21742-y
Yu, P. et al. Adv. Funct. Mater. 35, 2413081 (2025): https://doi.org/10.1002/adfm.202413081
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Wu, Q., Ji, X., Yu, P. et al. Scalable growth of vertical graphene nanosheets by thermal chemical vapor deposition. Nat Protoc (2025). https://doi.org/10.1038/s41596-025-01219-8
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DOI: https://doi.org/10.1038/s41596-025-01219-8