Biocompatible MWCNT scaffolds for immobilization and proliferation of E. coli

Gutiérrez, Marı́a C.; García-Carvajal, Zaira Y.; Hortigüela, María J.; Yuste, Luís; Rojo, Fernando; Ferrer, M. Luisa; Monte, Francisco del

doi:10.1039/b707504a

Cited by 78 publications

(66 citation statements)

References 26 publications

(19 reference statements)

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“…[70] Chitosan-CNT bionanocomposites with a cellular structure allow colonization of Escherichia coli, to result in a promising biohybrid material for MFC applications. [71] The precedent examples justify the great importance of CNT-based biohybrids for novel uses, which make them good candidates for the further development of advanced multifunctional materials for sensing and other applications.…”

Section: Assembly Of Biological Species To Microor Nanoparticulated Smentioning

confidence: 99%

Advances in Biomimetic and Nanostructured Biohybrid Materials

et al. 2010

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The rapid increase of interest in the field of biohybrid and biomimetic materials that exhibit improved structural and functional properties is attracting more and more researchers from life science, materials science, and nanoscience. Concomitant results offer valuable opportunities for applications that involve disciplines dealing with engineering, biotechnology, medicine and pharmacy, agriculture, nanotechnology, and others. In the current contribution we collect recent illustrative examples of assemblies between materials of biological origin and inorganic solids of different characteristics (texture, structure, and particle size). We introduce here a general overview on strategies for the preparation and conformation of biohybrids, the synergistic effects that determine the final properties of these materials, and their diverse applications, which cover areas as different as tissue engineering, drug delivery systems, biosensing devices, biocatalysis, green nanocomposites, etc.

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Section: Assembly Of Biological Species To Microor Nanoparticulated Smentioning

confidence: 99%

Advances in Biomimetic and Nanostructured Biohybrid Materials

et al. 2010

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“…Recently, several authors have reported the coating of different scaffold materials with carbon nanotube inks and produced promising current densities. [14][15][16][17][18]31 In an innovative approach to avoid the need of coating surfaces with CNT, a new method was recently developed to directly grow carbon nanotube networks on any type of substrate. This is achieved by modifying the generally employed route of chemical vapour deposition (CVD) synthesis.…”

Section: Introductionmentioning

confidence: 99%

“…[13][14][15]17 Several groups in the field of microbial bioelectrochemical systems have tried to take advantage of the great properties of carbon nanotubes, but even in the best situations only achieving around one third of the current compared to the results reported here. 14,15,17,18,31 In all these cases, the strategy consisted of coating a non-conductive substrate with carbon nanotubes. Instead, our departing structure already showed excellent conductivity and we grew the carbon nanotubes directly onto this substrate by chemical vapour deposition.…”

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confidence: 99%

The nanostructure of three-dimensional scaffolds enhances the current density of microbial bioelectrochemical systems

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et al. 2013

Energy Environ. Sci.

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Bioelectrochemical systems encompass a range of electrochemical systems wherein microorganisms are used as biocatalysts. These range from classical microbial fuel cells to novel microbial electrosynthesis processes. The future of practical applications relies on increased performance. In all cases the development of new electrode materials is essential to overcome the low current densities of bioelectrochemical systems. Here we describe a new biocompatible, highly conductive three-dimensional scaffold electrode, NanoWeb-RVC, with a hierarchical porous structure, synthesized by direct growth of carbon nanotubes on a macroporous substrate. The nanostructure of these electrodes enhances the rate of bacterial extracellular electron transfer while the macrostructure ensures efficient mass transfer to and from the electrode surface. NanoWeb-RVC electrodes showed a current density of (6.8 ± 0.3) mA cm-2, almost three times higher than a control electrode with the same macroporous structure but lacking the nanostructure. This current density is among the highest reported to date for a microbial bioanode. to overcome the low current densities of bioelectrochemical systems. Here we describe a new biocompatible, highly conductive three-dimensional scaffold electrode, NanoWeb-RVC, with a hierarchical porous structure, synthetised by direct growth of carbon nanotubes on a macroporous substrate. The nanostructure of these electrodes enhances the rate of bacterial extracellular electron transfer while the macrostructure ensures efficient mass transfer to and from the electrode surface. NanoWeb-RVC electrodes showed a current density of (6.8 ± 0.3) mA cm -2 , almost three times higher than a control electrode with the same macroporous structure but lacking the nanostructure. This current density is among the highest reported to date for a microbial bioanode.

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“…Thus, ISISA processed scaffolds containing conductive entities (e.g., carbon nanotubes) have exhibited enhanced performance as 3D anodes in direct methanol fuel cells. [ 25 ] This feature, in combination with the biocompatible character of the scaffolds that allows bacteria growth and colonization throughout the entire 3D structure [ 26 ] (Figure 2 d), opened the path to the use of these architectures as anodes in microbial fuel cells (MFCs). It is worth noting that the design and preparation of 3D architectures through which bacteria can grow and proliferate is indeed of great help to further improve the performance of this sort of device by enlarging the electrode surface area exposed to the bacterial growth medium and, hence, the energy conversion.…”

Section: Research Newsmentioning

confidence: 99%

Progress in Bionanocomposite and Bioinspired Foams

et al. 2011

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Significant progress is described in the development of cellular solids, specifically functional and multifunctional foams, prepared by bioinspired approaches and consisting of green components. This article covers recent examples mainly developed at the Materials Science Institute of Madrid, ICMM‐CSIC, on bionanocomposites and bioinspired materials conformed as foams. These novel hierarchical porous systems bring out a broad range of advanced applications from biomedical purposes to energy generation and storage.

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Biocompatible MWCNT scaffolds for immobilization and proliferation of E. coli

Cited by 78 publications

References 26 publications

Advances in Biomimetic and Nanostructured Biohybrid Materials

Advances in Biomimetic and Nanostructured Biohybrid Materials

The nanostructure of three-dimensional scaffolds enhances the current density of microbial bioelectrochemical systems

Progress in Bionanocomposite and Bioinspired Foams

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