Phytosynthesis of silver nanoparticles; naked eye cellulose filter paper dual mechanism sensor for mercury ions and ammonia in aqueous solution

  • Muhammad Ismail
  • M. I. Khan
  • Kalsoom Akhtar
  • Jongchul Seo
  • Murad Ali Khan
  • Abdullah M. Asiri
  • Sher Bahadar KhanEmail author


In the present study, low cost novel cellulose filter paper based silver nanoparticles (CF-AgNPs) sensor was developed. AgNPs were synthesized via green approach using aqueous leaf extract of Convolvulus cneorum (C. cneorum). The prepared AgNPs were characterized by UV–visible spectroscopy, powder X-ray diffraction (XRD), field emission scanning electronic microscopy (FE-SEM) and energy dispersive X-ray spectroscopy (EDX). Fourier-transform infrared spectroscopy (FTIR) study revealed the role of C. cneorum metabolites in the reduction of Ag+ ions into AgNPs and their stabilization. Fast, low cost, single step and selective detection of carcinogenic heavy metals in the environmental sample is significant to take safety action. Prepared AgNPs showed a potential colorimetric detection limit for toxic mercury HgII around 5 ppb and CrVI up to 5 ppm. Addition of HgII, CrVI and ammonia showed marked blue shift in the surface plasmon resonance (SPR) peak of AgNPs. Of importance, this AgNPs probe was not only successfully applied for the detection of HgII, but also it could be used in the sensing of CrVI and aqueous ammonia. Thus, due to the distinctive localized SPR, high sensitivity, simplicity, lower detection limit at ppb level and rapid response time are the most useful for the colorimetric detection of aqueous ammonia and HgII at room temperature.



The authors are highly grateful for Center of Excellence for Advance Materials Research and Chemistry Department King Abdulaziz University, Jeddah Saudi Arabia and the Department of Chemistry Kohat University of Science and Technology, Kohat Pakistan.

Compliance with ethical standards

Conflict of interest

The author has no conflict of interest.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Muhammad Ismail
    • 1
  • M. I. Khan
    • 1
  • Kalsoom Akhtar
    • 2
  • Jongchul Seo
    • 3
  • Murad Ali Khan
    • 1
  • Abdullah M. Asiri
    • 2
    • 4
  • Sher Bahadar Khan
    • 2
    • 4
    Email author
  1. 1.Department of ChemistryKohat University of Science & TechnologyKohatPakistan
  2. 2.Chemistry Department, Faculty of ScienceKing Abdulaziz UniversityJeddahSaudi Arabia
  3. 3.Department of PackagingYonsei UniversityWonjuSouth Korea
  4. 4.Center of Excellence for Advanced Materials Research, Faculty of ScienceKing Abdulaziz UniversityJeddahSaudi Arabia

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