Balu, Alina M.

Benítez, Almudena

Caballero Amores, Álvaro

Luque, Rafael

Puente-Santiago, A.R.

Rodríguez-Padrón, Daily

Romero, Antonio A.

English

Repositorio Institucional de la Universidad de Córdoba

  O13 42  Bio-inspired functionalised magnetic nanomaterials as energy storage devices  Daily Rodriguez-Padrona, Alain R. Puente-Santiagob, Alvaro Caballeroc, Almudena Benítezc, Alina M. Balua, Antonio A. Romeroa, Rafael Luquea* aDepartamento de Química Orgánica, Grupo FQM-383, Universidad de Cordoba,  bDepartamento de Química Física, Universidad de Cordoba, cDepartamento de Química Inorgánica, Universidad de Cordoba, Campus de Rabanales, Edificio Marie Curie (C-3), Ctra Nnal IV-A, Km 396, E14014, Cordoba  e-mail: q62alsor@uco.es  Hemoglobin and magnetic nanoparticles were employed to obtain a bio-modified nanomaterial using a simple solventless mechanochemical milling process.1 Dopamine was used as a robust anchoring agent to design stable nanostructures.2 The XPS spectrum show the band (400 eV) corresponding to nitrogen which confirms the presence of Hb in the obtained nanostructure. In addition, the amide I and amide II bands at 1654 cm-1 and 1545 cm-1 in the FT-IR spectrum indicate that Hb does not undergo changes in its secondary structure. This supposition was verified by Resonance Raman spectroscopy. TEM images display a homogeneous distribution of the Hb-DP-MNP, with a particle diameter of 10.1±0.2 nm.   Functionalized materials exhibited a significant magnetism, preserved upon functionalization. The functionalized Hb-DP-MNP nanocomposite was successfully employed in the design of a supercapacitor (specific capacitance: 115 Fg-1) with excellent cycling durability, over 94% specific capacitance retained after 1000 cycles.    References:  1. T. Tsuzuki, P. G. McCormick, J. Mater. Sci. 2004, 39, 5143. 2. W.-H. Zhou, C.-H. Lu, X.-C. Guo, F.-R. Chen, H.-H. Yang and X.-R. Wang, J. Mater. Chem. 2010, 20, 880.   Acknowledgements  The authors gratefully acknowledge support from Consejeria de Ciencia e Innovacion, Junta de Andalucia for funding project P10-FQM-6711. Support from Programa Propio de la Universidad de Cordoba to the group FQM-383 is also kindly acknowledged. 

Bio-inspired functionalised magnetic nanomaterials as energy storage devices

http://helvia.uco.es/xmlui/bitstream/10396/14666/1/nano11.pdf

Bio-inspired functionalised magnetic nanomaterials as energy storage devices

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Repositorio Institucional de la Universidad de Córdoba