fulltext.study @t Gmail

Investigation of photocatalytic behavior of l-aspartic acid stabilized Zn(1−x)MnxS solid solutions on methylene blue

Paper ID Volume ID Publish Year Pages File Format Full-Text
39756 45835 2014 8 PDF Available
Title
Investigation of photocatalytic behavior of l-aspartic acid stabilized Zn(1−x)MnxS solid solutions on methylene blue
Abstract

•Synthesis of l-aspartic acid passivated Zn(1−x)MnxS solid solutions is reported for the first time.•Presence of hydrophilic surface on catalyst enhances the possibility of dye adsorption and photocatalytic activity of catalyst.•Study of dopant concentration on photocatalytic activity of Zn(1−x)MnxS solid solutions.

Water dispersible Zn(1−x)MnxS solid solution photocatalysts stabilized with l-aspartic acid were synthesized by coprecipitation. Their photocatalytic activity was evaluated using methylene blue as a model pollutant. X-ray diffraction and Raman spectroscopy indicated the catalysts had a cubic crystal structure. The gradual increase in zinc sulphide (ZnS) lattice constant with increasing Mn2+ dopant concentration was due to the high ionic radius of Mn2+. Raman spectra exhibited two peaks at 260 and 345 cm−1. Ultraviolet–visible absorption spectra of the catalysts exhibited a strong excitonic peak at 270 nm, which was blue shifted compared with that of bulk ZnS (340 nm). This was attributed to quantum confinement and coupling effects. The hydrophilic l-aspartic acid on the photocatalyst surface had a positive effect on photocatalytic activity. The effects of dye and dopant concentrations on photocatalytic activity were investigated.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (133 K)Download as PowerPoint slide

Keywords
Photocatalysis; Zn(1−x)MnxS solid solution; Reusability of the photocatalyst; Effect of Mn on photocatalytic activity of Zn(1−x)MnxS; Kinetic study
First Page Preview
Investigation of photocatalytic behavior of l-aspartic acid stabilized Zn(1−x)MnxS solid solutions on methylene blue
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 476, 22 April 2014, Pages 1–8
Authors
, , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us