Use of titanium dioxide nanoparticles biosynthesized by

Nicolásás Órdenes-Aenishanslins, Luis Saona, Vicente Durán-Toro, Juan Monrás, Denisse Bravo, Joséé Pérez-Donoso

Resultado de la investigación: Article

Resumen

BACKGROUND: One of the major challenges of nanotechnology during the last decade has been the development of new procedures to synthesize nanoparticles. In this context, biosynthetic methods have taken hold since they are simple, safe and eco-friendly. RESULTS: In this study, we report the biosynthesis of TiO2 nanoparticles by an environmental isolate of Bacillus mycoides, a poorly described Gram-positive bacterium able to form colonies with novel morphologies. This isolate was able to produce TiO2 nanoparticles at 37°C in the presence of titanyl hydroxide. Biosynthesized nanoparticles have anatase polymorphic structure, spherical morphology, polydisperse size (40-60 nm) and an organic shell as determined by UV-vis spectroscopy, TEM, DLS and FTIR, respectively. Also, conversely to chemically produced nanoparticles, biosynthesized TiO2 do not display phototoxicity. In order to design less expensive and greener solar cells, biosynthesized nanoparticles were evaluated in Quantum Dot Sensitized Solar Cells (QDSSCs) and compared with chemically produced TiO2 nanoparticles. Solar cell parameters such as short circuit current density (I SC ) and open circuit voltage (V OC ) revealed that biosynthesized TiO2 nanoparticles can mobilize electrons in QDSSCs similarly than chemically produced TiO2. CONCLUSIONS: Our results indicate that bacterial extracellular production of TiO2 nanoparticles at low temperatures represents a novel alternative for the construction of green solar cells.

Idioma originalEnglish
Páginas (desde-hasta)90
Número de páginas1
PublicaciónMicrobial Cell Factories
DOI
EstadoAccepted/In press - 16 jul 2014

Huella dactilar

Nanoparticles
Titanium dioxide
Solar cells
Quantum Dots
Semiconductor quantum dots
Phototoxic Dermatitis
titanium dioxide
Nanotechnology
Biosynthesis
Gram-Positive Bacteria
Open circuit voltage
Bacilli
Fourier Transform Infrared Spectroscopy
Ultraviolet spectroscopy
Short circuit currents
Bacillus
Spectrum Analysis
Bacteria
Current density
Electrons

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology

Citar esto

Órdenes-Aenishanslins, N., Saona, L., Durán-Toro, V., Monrás, J., Bravo, D., & Pérez-Donoso, J. (Aceptado/En prensa). Use of titanium dioxide nanoparticles biosynthesized by. Microbial Cell Factories, 90. https://doi.org/10.1186/s12934-014-0090-7
Órdenes-Aenishanslins, Nicolásás ; Saona, Luis ; Durán-Toro, Vicente ; Monrás, Juan ; Bravo, Denisse ; Pérez-Donoso, Joséé. / Use of titanium dioxide nanoparticles biosynthesized by. En: Microbial Cell Factories. 2014 ; pp. 90.
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Órdenes-Aenishanslins, N, Saona, L, Durán-Toro, V, Monrás, J, Bravo, D & Pérez-Donoso, J 2014, 'Use of titanium dioxide nanoparticles biosynthesized by', Microbial Cell Factories, pp. 90. https://doi.org/10.1186/s12934-014-0090-7

Use of titanium dioxide nanoparticles biosynthesized by. / Órdenes-Aenishanslins, Nicolásás; Saona, Luis; Durán-Toro, Vicente; Monrás, Juan; Bravo, Denisse; Pérez-Donoso, Joséé.

En: Microbial Cell Factories, 16.07.2014, p. 90.

Resultado de la investigación: Article

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AU - Órdenes-Aenishanslins, Nicolásás

AU - Saona, Luis

AU - Durán-Toro, Vicente

AU - Monrás, Juan

AU - Bravo, Denisse

AU - Pérez-Donoso, Joséé

PY - 2014/7/16

Y1 - 2014/7/16

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