Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 124, Issue 11, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00339-018-2161-9
Keywords
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Funding
- DST, New Delhi [IFA-11/PH-06, IFA-13/PH-84]
- SERB, New Delhi [ECR/2016/1780, ECR/2016/1888]
- UGC DAE CSR, Indore [CSR-IC/CRS-73/2014-15/581]
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This study presents a systematic observation of the ability of bismuth nanostructures to detect trace amounts of mercury. Nanostructured hexagons of bismuth were synthesized using electrochemical deposition with potentiostatic mode on indium tin oxide-coated glass electrodes. Regular hexagons composed of nano-sized hexagonal building blocks ( edge length approximate to 80 to 700 nm) with well-defined edges were observed in scanning electron microscopy studies. X-ray diffraction pattern indicates the presence of polycrystalline bismuth and bismuth oxide in rhombohedral and cubic phases, respectively. X-ray photoelectron spectroscopy was done to analyze the chemical structure of the prepared nanostructures. Square wave anodic stripping voltammetry technique confirms that these nanostructured electrodes are highly sensitive to Hg2+ ions down to concentrations as low as 0.74 ppb.
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