fulltext.study @t Gmail

Solar photodecolorization of methylene blue by CuO/X zeolite as a heterogeneous catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
41828 45901 2010 11 PDF Available
Title
Solar photodecolorization of methylene blue by CuO/X zeolite as a heterogeneous catalyst
Abstract

Semiconductor photocatalysis has proved to be an efficient method for decolorization and degradation of pollutants. In this study, a common semiconductor, CuO, as doped with synthetic zeolite NaX via wet impregnation of parent zeolite with Cu(NO3)2 aqueous solution was prepared. The potential of the obtained photocatalyst in decolorization of methylene blue (MB) dye under sunlight irradiation was studied. Characterization of parent zeolite NaX and prepared samples were studied using X-ray powder diffraction (XRD) patterns, infrared spectroscopy (FT-IR) spectra, diffuse reflectance spectroscopy (DRS), thermo analytical techniques (TG/DTG and DSC), SEM and BET methods. The active component value (CuO) on parent zeolite was also determined by atomic absorption spectroscopy (AAS) method on digested catalyst. The influence of experimental parameters on the dye photodecolorization process was studied and it was observed that photoreactivity of photocatalyst (CuO/X) varied with the amount of catalyst, initial dye concentration, pH of the dye solution, temperature, and active component value (CuO) loading. The role of zeolite NaX as a support was also investigated on decolorization rate. The optimal experimental conditions were determined as follow: catalyst amount; 1.0 g L−1, concentration of the dye solution; 0.03 mM, pH of solution; 11, and active component value; 88 mg CuO per gram of the catalyst. Under these optimum conditions, the obtained decolorization efficiency for MB dye was 94%. The reusability of the intended catalyst was also investigated.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (118 K)Download as PowerPoint slideResearch highlights▶ Aqueous solution of methylene blue was degraded by zeolite X incorporated CuO under sunlight irradiation. ▶ CuO inside the zeolite is active center for degradation.

Keywords
Heterogeneous catalysis; Methylene blue; Zeolite NaX; Photodecolorization; CuO
First Page Preview
Solar photodecolorization of methylene blue by CuO/X zeolite as a heterogeneous catalyst
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 388, Issues 1–2, 20 November 2010, Pages 149–159
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