Studies on phase and morphological evolution of silver vanadium oxides as a function of pH: evaluation of electrochemical behavior towards quantification of Pb2+ and Cd2+ ions

The effect of pH on morphological and phase evolution of silver vanadium oxide nanostructures are investigated under hydrothermal process. The results of powder x-ray diffraction (PXRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) disclosed that the morphological ev...

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Published inMaterials research express Vol. 4; no. 8
Main Authors Gangaiah, Vijayakumar, Adarakatti, Prashanth Shivappa, Siddaramanna, Ashoka, Malingappa, Pandurangappa, Chandrappa, Gujjarahalli Thimmanna
Format Journal Article
LanguageEnglish
Published IOP Publishing 29.08.2017
Subjects
cyclic voltammetry
morphological evolution
nanoring
silver vanadate
stripping voltammetry
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Summary:The effect of pH on morphological and phase evolution of silver vanadium oxide nanostructures are investigated under hydrothermal process. The results of powder x-ray diffraction (PXRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) disclosed that the morphological evolution of nanobelts into nanoring structures occurs at pH in between 4 and 5 with Ag2V4O11 phase and nanobelt morphologies at pH from 6 to 7 with β-AgVO3 phase. The prepared Ag2V4O11 and β-AgVO3 have been evaluated for the simultaneous quantification of Pb2+ and Cd2+ ions in aqueous solution using differential pulse anodic stripping voltammetry. The results reveal that Ag2V4O11 shows better quantification result compared to β-AgVO3.
Bibliography:MRX-104183.R1
ISSN:2053-1591
DOI:10.1088/2053-1591/aa851a