e-journal

Preparation and characterization of TiO2 photocatalysts by Fe3+ doping together with Au deposition for the degradation of organic pollutants

---

Abstract.
Fe3+ doped TiO2 deposited with Au (Au/Fe–TiO2) was successfully prepared with an attempt to extend
light absorption of TiO2 into the visible region and reduce the rapid recombination of electrons and holes.
The samples were characterized by X-ray diffraction (XRD), N2 physical adsorption, Raman spectroscopy,
atomic absorption flame emission spectroscopy (AAS), UV–vis diffuse reflectance spectroscopy, X-ray
photoelectron spectroscopy (XPS), and photoluminescence (PL) spectra. The photocatalytic activities of
the samples were evaluated for the degradation of 2,4-chlorophenol in aqueous solutions under visible
light (l > 420 nm) and UV light irradiation. The results of XRD, XPS and high-resolution transmission
electron microscopy (HRTEM) analysis indicated that Fe3+ substituted for Ti4+ in the lattice of TiO2, Au
existed as Au0 on the surface of the photocatalyst and the mean particle size of Au was 8 nm. Diffuse
reflectance measurements showed an extension of light absorption into the visible region for Au/Fe–TiO2,
and PL analysis indicated that the electron–hole recombination rate has been effectively inhibited when
Au deposited on the surface of Fe-doped TiO2. Compared with Fe doped TiO2 sample and Au deposited
TiO2 sample, the Au/Fe–TiO2 photocatalyst exhibited excellent visible light and UV light activity and the
synergistic effects of Fe3+ and Au was responsible for improving the photocatalytic activity.

Keywords: Titania, Fe3+ doped, Au deposited, Photodegradation, Synergistic effect

---

Ketersediaan

Tidak ada salinan data

Informasi Detail

Judul Seri

Applied Catalysis B: Environmental

No. Panggil

-

Penerbit

London : Elsevier B.V.., 2009

Deskripsi Fisik

Applied Catalysis B: Environmental 88 (2009) 525–532

Bahasa

English

ISBN/ISSN

-

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

KIMIA

Info Detail Spesifik

-

Pernyataan Tanggungjawab

agus

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar