Solar photocatalytic inactivation of Fusarium Solani over TiO2 nanomaterials with controlled morphology—Formic acid effect

A. Turki, H. Kochkar, I. García-Fernández, M.I. Polo-López, A. Ghorbel, C. Guillard, G. Berhault, P Fernandez Ibanez

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Photocatalysis is a well known efficient process for the decontamination of wastewaters pollutants. In the last decade an intense research was focused on the elaboration of well tuned TiO2 photocatalysts with the basic idea to understand the relationship between exposed facet and reactivity. In this work, four TiO2 morphologies are examined namely: nanotubes (NT), nanoplates (NPL), nanorods (NR) and nanospheres (NS). The solar photocatalytic properties are compared in the disinfection of a Fusarium solani inoculated solution. Disinfection using the solar light has been studied and the effect of formic acid (FA) was examined. We demonstrated, for the first time, that the solar inactivation of the resistant spores of Fusarium in water is related to the exposed TiO2 facets. At very low concentration of photocatalyst, the inactivation of F. solani over TiO2 nanospheres shows the best disinfection efficiency with respect to the others morphologies. Experiments on simultaneous photocatalytic decontamination of FA and inactivation of F. solani showed that the presence of FA strongly retards the disinfection reaction in the case of TiO2 nanospheres while the FA degradation occurred simultaneously with F. solani inactivation in the case of TiO2 NT. This result shows the interest of TiO2 NT for the decontamination and disinfection of wastewaters containing acidic pollutants and pathogens.
LanguageEnglish
Pages147-152
JournalCatalysis Today
Volume209
DOIs
Publication statusAccepted/In press - 12 Oct 2012

Fingerprint

formic acid
Disinfection
Formic acid
Nanostructured materials
Decontamination
Nanospheres
Nanotubes
Photocatalysts
Wastewater
Photocatalysis
Pathogens
Nanorods
Degradation

Keywords

  • Photocatalytic disinfection
  • Fusarium solon
  • TiO2 with controlled morphologies
  • Formic acid

Cite this

Turki, A., Kochkar, H., García-Fernández, I., Polo-López, M. I., Ghorbel, A., Guillard, C., ... Fernandez Ibanez, P. (Accepted/In press). Solar photocatalytic inactivation of Fusarium Solani over TiO2 nanomaterials with controlled morphology—Formic acid effect. 209, 147-152. https://doi.org/10.1016/j.cattod.2012.10.014
Turki, A. ; Kochkar, H. ; García-Fernández, I. ; Polo-López, M.I. ; Ghorbel, A. ; Guillard, C. ; Berhault, G. ; Fernandez Ibanez, P. / Solar photocatalytic inactivation of Fusarium Solani over TiO2 nanomaterials with controlled morphology—Formic acid effect. 2012 ; Vol. 209. pp. 147-152.
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Turki, A, Kochkar, H, García-Fernández, I, Polo-López, MI, Ghorbel, A, Guillard, C, Berhault, G & Fernandez Ibanez, P 2012, 'Solar photocatalytic inactivation of Fusarium Solani over TiO2 nanomaterials with controlled morphology—Formic acid effect', vol. 209, pp. 147-152. https://doi.org/10.1016/j.cattod.2012.10.014

Solar photocatalytic inactivation of Fusarium Solani over TiO2 nanomaterials with controlled morphology—Formic acid effect. / Turki, A.; Kochkar, H.; García-Fernández, I.; Polo-López, M.I.; Ghorbel, A.; Guillard, C.; Berhault, G.; Fernandez Ibanez, P.

Vol. 209, 12.10.2012, p. 147-152.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Solar photocatalytic inactivation of Fusarium Solani over TiO2 nanomaterials with controlled morphology—Formic acid effect

AU - Turki, A.

AU - Kochkar, H.

AU - García-Fernández, I.

AU - Polo-López, M.I.

AU - Ghorbel, A.

AU - Guillard, C.

AU - Berhault, G.

AU - Fernandez Ibanez, P

PY - 2012/10/12

Y1 - 2012/10/12

N2 - Photocatalysis is a well known efficient process for the decontamination of wastewaters pollutants. In the last decade an intense research was focused on the elaboration of well tuned TiO2 photocatalysts with the basic idea to understand the relationship between exposed facet and reactivity. In this work, four TiO2 morphologies are examined namely: nanotubes (NT), nanoplates (NPL), nanorods (NR) and nanospheres (NS). The solar photocatalytic properties are compared in the disinfection of a Fusarium solani inoculated solution. Disinfection using the solar light has been studied and the effect of formic acid (FA) was examined. We demonstrated, for the first time, that the solar inactivation of the resistant spores of Fusarium in water is related to the exposed TiO2 facets. At very low concentration of photocatalyst, the inactivation of F. solani over TiO2 nanospheres shows the best disinfection efficiency with respect to the others morphologies. Experiments on simultaneous photocatalytic decontamination of FA and inactivation of F. solani showed that the presence of FA strongly retards the disinfection reaction in the case of TiO2 nanospheres while the FA degradation occurred simultaneously with F. solani inactivation in the case of TiO2 NT. This result shows the interest of TiO2 NT for the decontamination and disinfection of wastewaters containing acidic pollutants and pathogens.

AB - Photocatalysis is a well known efficient process for the decontamination of wastewaters pollutants. In the last decade an intense research was focused on the elaboration of well tuned TiO2 photocatalysts with the basic idea to understand the relationship between exposed facet and reactivity. In this work, four TiO2 morphologies are examined namely: nanotubes (NT), nanoplates (NPL), nanorods (NR) and nanospheres (NS). The solar photocatalytic properties are compared in the disinfection of a Fusarium solani inoculated solution. Disinfection using the solar light has been studied and the effect of formic acid (FA) was examined. We demonstrated, for the first time, that the solar inactivation of the resistant spores of Fusarium in water is related to the exposed TiO2 facets. At very low concentration of photocatalyst, the inactivation of F. solani over TiO2 nanospheres shows the best disinfection efficiency with respect to the others morphologies. Experiments on simultaneous photocatalytic decontamination of FA and inactivation of F. solani showed that the presence of FA strongly retards the disinfection reaction in the case of TiO2 nanospheres while the FA degradation occurred simultaneously with F. solani inactivation in the case of TiO2 NT. This result shows the interest of TiO2 NT for the decontamination and disinfection of wastewaters containing acidic pollutants and pathogens.

KW - Photocatalytic disinfection

KW - Fusarium solon

KW - TiO2 with controlled morphologies

KW - Formic acid

U2 - 10.1016/j.cattod.2012.10.014

DO - 10.1016/j.cattod.2012.10.014

M3 - Article

VL - 209

SP - 147

EP - 152

ER -

Turki A, Kochkar H, García-Fernández I, Polo-López MI, Ghorbel A, Guillard C et al. Solar photocatalytic inactivation of Fusarium Solani over TiO2 nanomaterials with controlled morphology—Formic acid effect. 2012 Oct 12;209:147-152. https://doi.org/10.1016/j.cattod.2012.10.014