Document Type

Journal Article

Department/Unit

Department of Chemistry

Title

Flower-like Bi2O2CO3: Facile synthesis and their photocatalytic application in treatment of dye-containing wastewater

Language

English

Abstract

A facile, fast and low-cost method was developed for the synthesis of novel flower-like Bi 2O 2CO 3 in an aqueous medium with the assistance of cetyltrimethylammonium bromide (CTAB). The as-synthesized flower-like Bi 2O 2CO 3 was characterized using the powder X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscope, UV-vis diffuse reflectance spectra, and N 2 adsorption-desorption techniques. It was found that the nanomaterial exhibited high photocatalytic efficiency towards the degradation of wastewater dyes (rhodamine-B, methylene orange, crystal violet or their mixture) under UV-vis light irradiation. There was only a slight decrease in photocatalytic activity after 5-time recycling (with above 99% removal), suggesting that the catalyst is highly stable and reusable. The relationship between structure and catalytic performance of the flower-like Bi 2O 2CO 3 was investigated. It is deduced that the high photocatalytic activity can be attributed to the flower-like morphology, thin nanopetals, low band gap, and large specific surface area. © 2012 Elsevier B.V.

Keywords

Bi 2O 2CO 3, Nanoflower, Photocatalyst, Photodegradation, Synthesis

Publication Date

2012

Source Publication Title

Chemical Engineering Journal

Volume

193-194

Start Page

123

End Page

130

Publisher

Elsevier

DOI

10.1016/j.cej.2012.04.023

Link to Publisher's Edition

http://dx.doi.org/10.1016/j.cej.2012.04.023

ISSN (print)

13858947

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