fulltext.study @t Gmail

Synthesis of rose-like ZnO hierarchical nanostructures in the presence of ionic liquid/Mg2+ for air purification and their shape-dependent photodegradation of SO2, NOx, and CO

Paper ID Volume ID Publish Year Pages File Format Full-Text
39849 45837 2014 10 PDF Available
Title
Synthesis of rose-like ZnO hierarchical nanostructures in the presence of ionic liquid/Mg2+ for air purification and their shape-dependent photodegradation of SO2, NOx, and CO
Abstract

•Novel rose-like ZnO nanoflowers synthesized by IL with the tartrate anion.•IL as a strong complexing agent was found to play a key role in the shape evolution.•PL spectra show that the rose-like ZnO nanostructures have more defects than the others arrays.•ZnO hierarchical nanostructures on NO, CO, and SO2 removal efficiencies were studied.

Rose-like nanostructures of ZnO were prepared by a mild solution-phase route using a hydrothermal method in the presence of the chiral ionic liquid (CIL) ditetrabutylammonium tartrate, [TBA]2[L-Tar] and Mg2+. Brunauer–Emmett–Teller analyses of specific surface area showed great enhancement in ZnO rosette nanostructures compared to amorphous and nanosheet morphologies (33.4 m2/g and 16 m2/g, respectively). Average pore size of these architectures is about 17.5 nm from Barrett–Joyner–Halenda model calculation. This CIL with the tartrate anion has been used as a designer templating agent and a source of the hydroxyl radical simultaneously. X-ray photoelectron spectroscopy (XPS) data confirm radical production by the ionic liquid. The effects of the morphology of ZnO hierarchical nanostructures on NOx, CO, and SO2 removal efficiencies were studied. It was found that the rose-like ZnO nanostructures perform much better than those of other samples and commercial ZnO in the removal of NOx, SO2, and CO under UV irradiation with photodegradation efficiency of ∼23%, ∼92%, and ∼34% respectively.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (183 K)Download as PowerPoint slide

Keywords
Air purification; Hierarchical nanostructures; Ionic liquid; Photocatalytic reactions
First Page Preview
Synthesis of rose-like ZnO hierarchical nanostructures in the presence of ionic liquid/Mg2+ for air purification and their shape-dependent photodegradation of SO2, NOx, and CO
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 475, 5 April 2014, Pages 325–334
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