3D hierarchically porous Cu-BiOCl nanocomposite films: One-step electrochemical synthesis, structural characterization and nanomechanical and photoluminescent properties

Miguel Guerrero, Salvador Pané, Bradley J. Nelson, Maria Dolors Baró, Mònica Roldán, Jordi Sort, Eva Pellicer

Research output: Contribution to journalArticleResearchpeer-review

30 Citations (Scopus)

Abstract

Three-dimensional (3D) hierarchically porous composite Cu-BiOCl films have been prepared by a facile one-step galvanostatic electrodeposition process from acidic electrolytic solutions containing Cu(ii) and Bi(iii) chloride salts and Triton X-100. The films show spherical, micron-sized pores that spread over the whole film thickness. In turn, the pore walls are made of randomly packed BiOCl nanoplates that are assembled leaving micro-nanopore voids beneath. It is believed that Cu grows within the interstitial spaces between the hydrogen bubbles produced from the reduction of H+ ions. Then, the BiOCl sheets accommodate in the porous network defined by the Cu building blocks. The presence of Cu tends to enhance the mechanical stability of the composite material. The resulting porous Cu-BiOCl films exhibit homogeneous and stable-in-time photoluminescent response arising from the BiOCl component that spreads over the entire 3D porous structure, as demonstrated by confocal scanning laser microscopy. A broad-band emission covering the entire visible range, in the wavelength interval 450-750 nm, is obtained. The present work paves the way for the facile and controlled preparation of a new generation of photoluminescent membranes. © 2013 The Royal Society of Chemistry.
Original languageEnglish
Pages (from-to)12542-12550
JournalNanoscale
Volume5
DOIs
Publication statusPublished - 2 Dec 2013

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