Publicación: Síntesis y caracterización de materiales organometálicos soportados sobre zeolitas sintéticas con efecto biocida
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2022
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info:eu-repo/semantics/openAccess
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['Universidad Nacional de Educación a Distancia (España)', 'Universidad Politécnica de Madrid. Departamento de Ingeniería Mecánica']
Resumen
Con el fin de impedir el crecimiento de depósitos bióticos sobre superficies sumergidas, recubrimientos antiadherentes con agentes biocidas son generalmente utilizados, sin embargo, algunos biocidas comerciales pueden inducir efectos negativos al ecosistema. El presente trabajo aborda el uso de un potencial producto biocida utilizando nanopartículas de cobre y capsaicina soportadas sobre zeolita ZSM-5. De este modo, diferentes formulaciones fueron estudiadas para determinar la influencia de la concentración de cada componente. La incorporación del cobre fue evidenciada mediante microscopía electrónica de barrido, así también, mediante Espectroscopía Infrarroja por Transformada de Fourier, se comprobó la presencia de capsaicina en la superficie interna. No obstante, pudo evidenciarse la presencia de capsaicina sobre la superficie externa con una significativa reducción del área superficial de los materiales. Finalmente, mediante análisis de inhibición microbiana se evidenció que las nanopartículas inhiben el crecimiento de la bacteria mientras que el componente orgánico actúa como biocida de refuerzo.
In order to prevent the accumulation of biotic deposits on submerged surfaces, antifouling coatings containing biocide agents can be used; however several commercial biocides could imply negative effects on the ecosystem. In the present research, the study of a potential biocide product through the use of copper and capsaicin nanoparticles supported on zeolite ZSM-5 is presented. For such purpose, different formulations were analyzed to determine the influence of each component concentration. The incorporation of copper was evidenced by scanning electron microscopy and energy dispersive spectroscopy; similarly, capsaicin was verified as supported over the zeolite surface by Fourier Transform Infrared Spectroscopy. Meanwhile, capsaicin presence over the external zeolite surface was also detected with a significant lowering of the material surface area. Finally, bacterial growth inhibition analysis depicted that the copper nanoparticles inhibit the growth of e-coli bacteria while the organic component acts as a reinforcing biocide.
In order to prevent the accumulation of biotic deposits on submerged surfaces, antifouling coatings containing biocide agents can be used; however several commercial biocides could imply negative effects on the ecosystem. In the present research, the study of a potential biocide product through the use of copper and capsaicin nanoparticles supported on zeolite ZSM-5 is presented. For such purpose, different formulations were analyzed to determine the influence of each component concentration. The incorporation of copper was evidenced by scanning electron microscopy and energy dispersive spectroscopy; similarly, capsaicin was verified as supported over the zeolite surface by Fourier Transform Infrared Spectroscopy. Meanwhile, capsaicin presence over the external zeolite surface was also detected with a significant lowering of the material surface area. Finally, bacterial growth inhibition analysis depicted that the copper nanoparticles inhibit the growth of e-coli bacteria while the organic component acts as a reinforcing biocide.
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Categorías UNESCO
Palabras clave
Zeolita ZSM-5, capsaicina, nanopartículas de cobre, biocida órgano-metálico
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Centro
E.T.S. de Ingenieros Industriales
Departamento
Mecánica