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Effect of humic acid on photocatalytic activity of ZnO nanoparticles

Paper ID Volume ID Publish Year Pages File Format Full-Text
30294 44468 2014 5 PDF Available
Title
Effect of humic acid on photocatalytic activity of ZnO nanoparticles
Abstract

•ZnO NPs were synthesized by chemical co-precipitate method.•The mean diameter was determined to be 55 nm.•ZnO NPs exhibited excellent photocatalytic activity.•Presence of HA reduced the photocatalytic efficiency of ZnO NPs.

Zinc oxide nanoparticles (ZnO NPs) are widely used in consumer products including sunscreens, textiles and paints. The indiscriminate use of such materials may leads to its release into the environment. The present study evaluated the photocatalytic effect of ZnO NPs in presence of humic acid (HA), which is an important factor present largely in the environment. ZnO NPs were characterized by using UV–visible spectrophotometer, scanning electron microscopy, particle size analyzer and X-ray diffraction analysis. The mean diameter of the particles was found to be 55 ± 2.1 nm. The XRD patterns exhibited hexagonal structure for ZnO NPs. The photocatalytic activity of ZnO NPs was evaluated based on the change in UV–visible absorption spectra of the methylene blue solution as a function of reaction time under visible light source. The rate of photocatalytic degradation of methylene blue was decreased with increase in HA concentration.

Keywords
ZnO NPs; Humic acid; Methylene blue; Visible light; Photocatalytic property
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 138, 5 September 2014, Pages 155–159
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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