Applied Physics A

, 124:737 | Cite as

Electrochemical sensor for detection of mercury (II) ions in water using nanostructured bismuth hexagons

  • Sandeep GuptaEmail author
  • Rini Singh
  • M. D. Anoop
  • Vaibhav Kulshrestha
  • Divesh N. Srivastava
  • Kanad Ray
  • S. L. Kothari
  • Kamlendra Awasthi
  • Manoj KumarEmail author


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 \(\approx 80\) 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 \(Hg^{2+}\) ions down to concentrations as low as 0.74 ppb.



We thank DST, New Delhi (IFA-11/PH-06, IFA-13/PH-84), SERB, New Delhi (ECR/2016/1780, ECR/2016/1888), and UGC DAE CSR, Indore (CSR-IC/CRS-73/2014-15/581), for providing financial support. We are also thankful to MRC, MNIT Jaipur, for providing characterization facilities.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Amity Institute of BiotechnologyAmity University RajasthanJaipurIndia
  2. 2.Department of PhysicsMalaviya National Institute of TechnologyJaipurIndia
  3. 3.Department of PhysicsBanasthali VidyapithBanasthaliIndia
  4. 4.CSIR-Central Salt and Marine Chemicals Research InstituteBhavnagarIndia
  5. 5.Academy of Scientific and Innovative ResearchBhavnagarIndia
  6. 6.Analytical Division and Centralized Instrument FacilityCSIR-Central Salt and Marine Chemicals Research InstituteBhavnagarIndia
  7. 7.Amity School of Applied SciencesAmity University RajasthanJaipurIndia

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