Titania nanotube stabilized BiOCl nanoparticles in visible-light photocatalysis

B. Buchholcz, H. Haspel, A. Oszkó, A. Kukovecz, Z. Kónya

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7 Citations (Scopus)

Abstract

Photocatalysis is a green approach in environmental organic pollutant decomposition. Lately, considerable improvement in the activity of photocatalysts has been achieved with the realization of p-n heterostructures due to the lifetime extension of the photogenerated charge carriers. Herein, we report a facile synthesis approach for decorating n-type titanate nanotubes with p-type V-VI-VII compound semiconductor BiOCl nanoparticles. It is well-known that BiOX (X = Cl, Br, I) materials form nanometer-thick platelets, which can eventually assemble into micrometer size flower-like 3D structures. Here, we demonstrate that the tubular titanate support can stabilize BiOCl on its surface in the form of nanoparticles measuring a few nanometers in diameter, instead of forming the well-known bismuth-oxyhalide nanoflowers. Subsequent calcination at 400 °C transforms the pristine titanate structures into one-dimensional anatase nanotubes, along with the formation of a heterojunction at the interface of the emerging Bi2Ti2O7 and anatase phases. The resulting nanocomposite shows activity in visible-light photocatalytic test reactions.

Original languageEnglish
Pages (from-to)16410-16422
Number of pages13
JournalRSC Advances
Volume7
Issue number27
DOIs
Publication statusPublished - Jan 1 2017

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ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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