Photochromic behavior of silver nanoparticle incorporated titanosilicate ETS-10 films


Galioglu S., İŞLER BİNAY M., Demircioglu Z., Koc M., Vocanson F., Destouches N., ...More

MICROPOROUS AND MESOPOROUS MATERIALS, vol.196, pp.136-144, 2014 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 196
  • Publication Date: 2014
  • Doi Number: 10.1016/j.micromeso.2014.05.009
  • Journal Name: MICROPOROUS AND MESOPOROUS MATERIALS
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.136-144
  • Keywords: Photochromism, ETS-10, Titanosilicates, Silver nanoparticles, Host-Guest systems, MICROPOROUS TITANOSILICATE, RUTHENIUM(0) NANOCLUSTERS, MULTICOLOR PHOTOCHROMISM, QUANTUM WIRES, HYDROLYSIS, CATALYST, WO3

Abstract

The partially reversible photochromic behavior of Ag-0 nanoparticle incorporated titanosilicate ETS-10 films was achieved for the first time. Ag+ ions were incorporated into ETS-10 matrix by ion-exchange of extra framework cations (i.e., Na+ and K+) to form Ag+ ion-exchanged ETS-10. The colored (i.e., activated state) and colorless (i.e., bleached state) forms of the photochromic system of Ag-0 nanoparticle incorporated ETS-10 films were achieved through thermal reduction and exposure to visible laser at 532 nm wavelength, respectively. The resulting Ag-0-ETS-10 films and also Ag+-ETS-10 crystals have been characterized by ICP-OES, XRD, XPS, FE-SEM, HR-TEM, UV-vis spectroscopies. Partial restoration of color was achieved after second thermal treatment, which implies reversibility of the photochromic process. Furthermore, Density Functional Theory (DFT) results showed that ETS-10 had robust geometry and incorporation of the silver nanoparticles had minimal effect on the structure. The relationship of ETS-10's unique structural formation along with the integration of Ag-0 nanoparticles within its matrix and its subsequent photochromic property was shown for the first time. (C) 2014 Elsevier Inc. All rights reserved.