CVD growth of graphene on NiTi alloy for enhanced biological activity

Jinhua Li; Gang Wang; Hao Geng; Hongqin Zhu; Miao Zhang; Zengfeng Di; Xuanyong Liu; Paul K. Chu; Xi Wang

doi:10.1021/acsami.5b06639

CVD growth of graphene on NiTi alloy for enhanced biological activity

Jinhua Li, Gang Wang, Hao Geng, Hongqin Zhu, Miao Zhang, Zengfeng Di^*, Xuanyong Liu, Paul K. Chu, Xi Wang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

63 Citations (Scopus)

Abstract

From the perspective of surface modification of biomaterials, graphene is very promising because of its unique physical and chemical properties. Herein, we report direct in situ fabrication of graphene on nitinol (NiTi) shape memory alloy by chemical vapor deposition (CVD) and investigate both the growth mechanism as well as surface bioactivity of the modified alloy. Growth of the graphene layer is independent of Ni but is rather correlated with the formation of the TiC phase on the surface. Graphene nucleates and grows on this carbide layer during exposure to CH₄. The graphene layer is observed to promote the osteogenesis differentiation of mesenchymal stem cells and surface bioactivity. The use of graphene as a bioactive layer is a viable approach to improving the surface properties of NiTi-based dental and orthopedic implants and components.

Original language	English
Pages (from-to)	19876-19881
Number of pages	6
Journal	ACS applied materials & interfaces
Volume	7
Issue number	36
DOIs	https://doi.org/10.1021/acsami.5b06639
Publication status	Published - 16 Sept 2015
Externally published	Yes

Keywords

bioactivity
graphene
nitinol
stem cells
surface and interface

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10.1021/acsami.5b06639

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title = "CVD growth of graphene on NiTi alloy for enhanced biological activity",

abstract = "From the perspective of surface modification of biomaterials, graphene is very promising because of its unique physical and chemical properties. Herein, we report direct in situ fabrication of graphene on nitinol (NiTi) shape memory alloy by chemical vapor deposition (CVD) and investigate both the growth mechanism as well as surface bioactivity of the modified alloy. Growth of the graphene layer is independent of Ni but is rather correlated with the formation of the TiC phase on the surface. Graphene nucleates and grows on this carbide layer during exposure to CH4. The graphene layer is observed to promote the osteogenesis differentiation of mesenchymal stem cells and surface bioactivity. The use of graphene as a bioactive layer is a viable approach to improving the surface properties of NiTi-based dental and orthopedic implants and components.",

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author = "Jinhua Li and Gang Wang and Hao Geng and Hongqin Zhu and Miao Zhang and Zengfeng Di and Xuanyong Liu and Chu, {Paul K.} and Xi Wang",

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AU - Li, Jinhua

AU - Wang, Gang

AU - Geng, Hao

AU - Zhu, Hongqin

AU - Zhang, Miao

AU - Di, Zengfeng

AU - Liu, Xuanyong

AU - Chu, Paul K.

AU - Wang, Xi

PY - 2015/9/16

Y1 - 2015/9/16

N2 - From the perspective of surface modification of biomaterials, graphene is very promising because of its unique physical and chemical properties. Herein, we report direct in situ fabrication of graphene on nitinol (NiTi) shape memory alloy by chemical vapor deposition (CVD) and investigate both the growth mechanism as well as surface bioactivity of the modified alloy. Growth of the graphene layer is independent of Ni but is rather correlated with the formation of the TiC phase on the surface. Graphene nucleates and grows on this carbide layer during exposure to CH4. The graphene layer is observed to promote the osteogenesis differentiation of mesenchymal stem cells and surface bioactivity. The use of graphene as a bioactive layer is a viable approach to improving the surface properties of NiTi-based dental and orthopedic implants and components.

AB - From the perspective of surface modification of biomaterials, graphene is very promising because of its unique physical and chemical properties. Herein, we report direct in situ fabrication of graphene on nitinol (NiTi) shape memory alloy by chemical vapor deposition (CVD) and investigate both the growth mechanism as well as surface bioactivity of the modified alloy. Growth of the graphene layer is independent of Ni but is rather correlated with the formation of the TiC phase on the surface. Graphene nucleates and grows on this carbide layer during exposure to CH4. The graphene layer is observed to promote the osteogenesis differentiation of mesenchymal stem cells and surface bioactivity. The use of graphene as a bioactive layer is a viable approach to improving the surface properties of NiTi-based dental and orthopedic implants and components.

KW - bioactivity

KW - graphene

KW - nitinol

KW - stem cells

KW - surface and interface

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ER -

CVD growth of graphene on NiTi alloy for enhanced biological activity

Abstract

Keywords

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