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Synthesis of diamagnetic ZnO nano-crystallites via sol-gel method and their photocatalytic activity<br />

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Title Statement Synthesis of diamagnetic ZnO nano-crystallites via sol-gel method and their photocatalytic activity<br />
 
Added Entry - Uncontrolled Name Kumar, Deepak ; Delhi Technological University
Mehata, Mohan Singh; Delhi Technological University
 
Uncontrolled Index Term Materials Science; Nanomaterials; Electronic properties;electronic engineering; Optical properties
Zinc oxide, Photoluminescence, Synthesis, Photocatalytic activity, Diamagnetic behavior, Scavenged
 
Summary, etc. <p>The diamagnetic zinc oxide (ZnO) nano-crystallites were synthesized via the sol-gel method. The X-ray diffraction(XRD) and field emission scanning electron microscope (FESEM) were used for structural characterization. The XRDpattern demonstrates that the ZnO nanoparticles (NPs) have a wurtzite structure with an average crystallite size of ~20 nm.TheFESEM and EDAX (energy- dispersive x-ray analysis) confirm the particles are in granular, spherical, and rod-likemixed-phase. The absorption spectra show a red shift and observed bandgap energy of about 3.17 eV, which might attributebecause of the oxygen vacancies. Further, photoluminescence (PL) exhibits dual peaks at wavelengths 430 and550 nm, which maybe due to defects induced at the surface of the NPs. The vibrating sample magnetometer (VSM) studydemonstrates the diamagnetic behavior of zinc oxide nanoparticles at 300 K. The photocatalytic effectiveness of the ZnONPs was examined by decomposing a congo red (CR) dye as an organic water pollutant under UV irradiation. The leadingabsorption peak of CR dye decreases with the UV irradiation time. The complete decolorization of the CR dye was observedafter 150 min with the reaction rate constant of 0.018 min-1.</p>
 
Publication, Distribution, Etc. Indian Journal of Engineering and Materials Sciences (IJEMS)
2022-08-25 03:20:50
 
Electronic Location and Access application/pdf
http://op.niscair.res.in/index.php/IJEMS/article/view/48695
 
Data Source Entry Indian Journal of Engineering and Materials Sciences (IJEMS); ##issue.vol## 29, ##issue.no## 4 (2022): IJEMS-AUGUST 2022
 
Language Note en
 
Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJEMS/article/download/48695/465557897
 
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