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A facile and low-cost synthesis of granulated blast furnace slag-based cementitious material coupled with Fe2O3 catalyst for treatment of dye wastewater

Paper ID Volume ID Publish Year Pages File Format Full-Text
46202 46435 2013 8 PDF Available
Title
A facile and low-cost synthesis of granulated blast furnace slag-based cementitious material coupled with Fe2O3 catalyst for treatment of dye wastewater
Abstract

A facile and low-cost route was used to synthesize a novel catalyst of alkali-activated granulated blast furnace slag-based cementitious material (ASCM) coupled with Fe2O3 by a three-step reaction of polymerization, ion exchange and impregnation. The FESEM and XRD results revealed that a high compressive strength ASCM with mean particle size about 50 nm was synthesized and Fe2O3 covered on ASCM surface in the form of clusters. The photoluminescence peak sharply decreases with increase of Fe2O3 content due to the recombination probabilities of photogenerated electron–hole pairs to be inhibited. The photocatalytic activities for degradation of Congo red (CR) dye were evaluated and the sample of ASCM loaded about 5 wt% Fe2O3 showed the highest degradation efficiency under UV irradiation. The photocatalytic degradation of CR in solution obeys second order reaction kinetics and a possible reaction mechanism is proposed.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A catalyst of slag-based cementitious material loaded Fe2O3 is firstly synthesized. ► The Fe2O3/ASCM catalyst is firstly used for the photocatalytic degradation of CR. ► The photocatalytic degradation of CR obeys second order reaction kinetics. ► A possible reaction mechanism was proposed.

Keywords
Slag-based cementitious material; Fe2O3; Photocatalysis; Reaction kinetics; Degradation efficiency
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A facile and low-cost synthesis of granulated blast furnace slag-based cementitious material coupled with Fe2O3 catalyst for treatment of dye wastewater
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volumes 138–139, 17 July 2013, Pages 9–16
Authors
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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