Titanium Coated with Graphene and Niobium Pentoxide for Biomaterial Applications.

IF 3 Q3 MATERIALS SCIENCE, BIOMATERIALS
International Journal of Biomaterials Pub Date : 2022-11-30 eCollection Date: 2022-01-01 DOI:10.1155/2022/2786101
Hazel Paloma Reis Corado, Francielly Moura de Souza Soraes, Dyanni Manhães Barbosa, Andreza Menezes Lima, Carlos Nelson Elias
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引用次数: 0

Abstract

Graphene and niobium oxide are used in biomaterial coatings. In this work, commercially pure titanium (cp Ti) was coated with graphene oxide (GO), niobium pentoxide (Nb2O5), and a mixture of both materials (NbGO) by the electrochemical deposition method. The surface morphology, roughness, wettability, and degradation of coated and uncoated samples were analyzed by scanning electron microscopy, interferometry, and contact angle. The results showed that the specimens coated with NbGO (cp Ti-NbGO) showed the highest surface roughness (Ra = 0.64 μm) and were hydrophobic. The contact (θ) angle between water and the surface of uncoated specimens (cp Ti), coated with GO (cp Ti-GO), coated with a mixture with GO and Nb2O5) (cp Ti-NbGO), and coated with Nb2O5 were 50.74°, 44.35°, 55.86°, and 100.35°, respectively. The electrochemical corrosion tests showed that coating with graphene oxide increased the corrosion resistance and coating with Nb2O5 decreased the corrosion resistance. The negative effect of the effect of Nb2O5 coating in corrosion resistance compensated for the release of Nb2O5, which helps osseointegration, increasing cell viability, and proliferation of osteoblasts. The NbGO coating may be a good way to combine the bactericidal effect of graphene oxide with the osseointegration effect of Nb2O5.

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用于生物材料应用的涂有石墨烯和五氧化二铌的钛。
石墨烯和氧化铌可用于生物材料涂层。在这项研究中,采用电化学沉积法在商业纯钛(cp Ti)上涂覆了氧化石墨烯(GO)、五氧化二铌(Nb2O5)以及这两种材料的混合物(NbGO)。通过扫描电子显微镜、干涉仪和接触角分析了涂覆和未涂覆样品的表面形貌、粗糙度、润湿性和降解情况。结果表明,涂有 NbGO 的试样(cp Ti-NbGO )表面粗糙度最高(Ra = 0.64 μm),且具有疏水性。未涂层试样(cp Ti)、涂有 GO 的试样(cp Ti-GO)、涂有 GO 和 Nb2O5 混合物的试样(cp Ti-NbGO)和涂有 Nb2O5 的试样表面与水的接触角(θ)分别为 50.74°、44.35°、55.86° 和 100.35°。电化学腐蚀试验表明,氧化石墨烯涂层提高了耐腐蚀性,而 Nb2O5 涂层降低了耐腐蚀性。Nb2O5 涂层对耐腐蚀性的负面影响得到了补偿,Nb2O5 的释放有助于骨结合,增加细胞活力和成骨细胞的增殖。NbGO 涂层可能是结合氧化石墨烯的杀菌效果和 Nb2O5 的骨结合效果的一种好方法。
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来源期刊
International Journal of Biomaterials
International Journal of Biomaterials MATERIALS SCIENCE, BIOMATERIALS-
CiteScore
4.30
自引率
3.20%
发文量
50
审稿时长
21 weeks
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