The detection of cu2+ ions using paper-based silver nanoparticles as a colorimetry indicator

Windri Handayani, Nur Intan Pratiwi, Arie Listyarini, Yasman, Cuk Imawan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The detection of chemical pollution in an ecosystem requires rapid and accurate analysis in the field. The method presented here can help minimize preparation time and simple detection of the metal ions. Silver nanoparticles are known for their surface plasmon resonance characteristics that visibly display distinctive colors; this makes it possible to develop as colorimetric indicators. In this study, silver nanoparticles were synthesized on paper using velvet apple (Diospyros discolor Willd.) leaf extract as the Ag+ reducing agent. The paper was immersed in the water extract for 1 hour and for 24 hours. The formation of silver nanoparticles was indicated by the change in the paper’s color from white to light brown and dark brown. Furthermore, the paper was tested using several types of metal ions, namely, Cu2+, Mn2+, Pb2+, Zn2+, Mg2+, Ni2+ and Co2+ . For all types of metal ions, the paper’s color changed selectively while detecting Cu2+ ions. The paper-based silver nanoparticles were sensitive enough to detect Cu2+ ions starting at concentrations of 100 mg/L. The Transmission Electron Microscope (TEM) revealed that the silver nanoparticles tended to aggregate after the addition of Cu2+ ions, which caused changes in the size and LSPR of the nanoparticles. This potential method needs further refinement and development to enhance the sensitivity of the paper-based colorimetric indicator, so that it can detect Cu2+ at lower concentrations.

Original languageEnglish
Title of host publicationNano Engineering and Materials Technologies IV
EditorsHao Gong, Kazuo Umemura
PublisherTrans Tech Publications Ltd
Pages306-311
Number of pages6
ISBN (Print)9783035715873
DOIs
Publication statusPublished - 2020
Event8th International Conference on Nanostructures, Nanomaterials and Nanoengineering, ICNNN 2019 and 4th International Conference on Materials Technology and Applications, ICMTA 2019 - Kyoto, Japan
Duration: 11 Oct 201914 Oct 2019

Publication series

NameMaterials Science Forum
Volume990 MSF
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference8th International Conference on Nanostructures, Nanomaterials and Nanoengineering, ICNNN 2019 and 4th International Conference on Materials Technology and Applications, ICMTA 2019
Country/TerritoryJapan
CityKyoto
Period11/10/1914/10/19

Keywords

  • Biosynthesis
  • Colorimetric
  • Cu detection
  • Diospyros discolor
  • Silver nanoparticles

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