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Visible light photocatalytic reduction of 4-Nitrophenol using CdS in the presence of Na2SO3

Paper ID Volume ID Publish Year Pages File Format Full-Text
27090 44000 2013 6 PDF Available
Title
Visible light photocatalytic reduction of 4-Nitrophenol using CdS in the presence of Na2SO3
Abstract

The photocatalytic properties of CdS semiconductors were investigated for the photoreduction of 4-Nitrophenol with Na2SO3 under blue light irradiation. The materials were synthesized by co-precipitation method in ethylenediamine–water solution and their structural and optical properties were characterized by X-ray diffraction, UV–vis spectroscopy and nitrogen physisorption. The CdS semiconductor prepared at higher EN contents (90 vol.%) presented the highest photocatalytic activity for the reduction of 4-Nitrophenol to 4-Aminophenol. Their photo-efficiency enhancement is attributed to the quantum confinement effect caused by the small particle size (∼15 nm).

Graphical abstractPhotoreduction of the 4-NPhenolate via electron transfer process with CdS under blue light irradiation.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► CdS showed small particle size with nanorods like morphology. ► The CdS-90 is an efficient semiconductor using low power blue lamp. ► The highest activity of the CdS-90 is attributed to the quantum confinement effect. ► 4-Nitrophenol photoreduction was achieved using Na2SO3 as a reducing agent.

Keywords
CdS quantum size; 4-Nitrophenol; Photoreduction; Na2SO3 reducing
First Page Preview
Visible light photocatalytic reduction of 4-Nitrophenol using CdS in the presence of Na2SO3
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 257, 1 April 2013, Pages 44–49
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering