Bottom-up construction of highly photoactive dye-sensitized titania using Ru(II) and Ir(III) complexes as building blocks

  1. Rico-Santacruz, M. 1
  2. Sepúlveda, Á.E. 2
  3. Ezquerro, C. 2
  4. Serrano, E. 1
  5. Lalinde, E. 2
  6. Berenguer, J.R. 2
  7. García-Martínez, J. 1
  1. 1 Universitat d'Alacant
    info

    Universitat d'Alacant

    Alicante, España

    ROR https://ror.org/05t8bcz72

  2. 2 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

Revista:
Applied Catalysis B: Environmental

ISSN: 0926-3373

Año de publicación: 2017

Volumen: 200

Páginas: 93-105

Tipo: Artículo

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DOI: 10.1016/J.APCATB.2016.06.061 SCOPUS: 2-s2.0-84978665428 WoS: WOS:000384775600010 GOOGLE SCHOLAR

Otras publicaciones en: Applied Catalysis B: Environmental

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Resumen

The one-pot co-condensation of tetrabutyl orthotitanate (TBOT) and the neutral Ru(II) N3 dye or the new cationic Ir(III) complex [Ir(ppy)2(3,3′-H2dcbpy)]PF6 have yielded novel hybrid in-situ titanias, which present an exceptional stability against leaching or photodegradation of the coordination dye. The main advantages of this strategy are: i) high dye incorporation level, ii) narrowing band gap and iii) high stability. These materials exhibit much higher photocatalytic activity, under both UV and visible light, not only than the dye-free titania but also than the related dye-sensitized titania prepared by post-synthetic grafting. This in-situ synthetic approach is a promising alternative route to prepare highly stable dye-sensitized materials with great applicability potential. © 2016 Elsevier B.V.