Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA.
Department of Biomedical Engineering, University of Bridgeport, 126 Park Avenue, Bridgeport, CT, 06604, USA.
Sci Rep. 2017 Aug 29;7(1):9855. doi: 10.1038/s41598-017-09692-2.
It is one of the most important needs to develop renewable, scalable and multifunctional methods for the fabrication of 3D carbon architectures. Even though a lot of methods have been developed to create porous and mechanically stable 3D scaffolds, the fabrication and control over the synthesis of such architectures still remain a challenge. Here, we used Magnetospirillum magneticum (AMB-1) bacteria as a bio-template to fabricate light-weight 3D solid structure of carbon nanotubes (CNTs) with interconnected porosity. The resulting porous scaffold showed good mechanical stability and large surface area because of the excellent pore interconnection and high porosity. Steered molecular dynamics simulations were used to quantify the interactions between nanotubes and AMB-1 via the cell surface protein MSP-1 and flagellin. The 3D CNTs-AMB1 nanocomposite scaffold is further demonstrated as a potential substrate for electrodes in supercapacitor applications.
开发可再生、可扩展和多功能的方法来制造 3D 碳结构是最重要的需求之一。尽管已经开发出许多方法来制造多孔和机械稳定的 3D 支架，但这种结构的制造和合成控制仍然是一个挑战。在这里，我们使用趋磁螺菌（AMB-1）细菌作为生物模板来制造具有互连通孔的轻质 3D 碳纳米管（CNT）实心结构。由于优异的孔连通性和高孔隙率，所得的多孔支架表现出良好的机械稳定性和大的表面积。定向分子动力学模拟用于通过细胞表面蛋白 MSP-1 和鞭毛蛋白来量化纳米管和 AMB-1 之间的相互作用。3D CNT-AMB1 纳米复合材料支架进一步被证明是超级电容器应用中电极的潜在基板。
