Study of the effect of the alkali and alkaline earth cations on the L– cysteine modified silver nanoparticles and application of it as a colorimetric sensor

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Bamdad Farzad; HABIBI ZAHRA

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Journal: NANOSCALE Year:2020 | Volume:7 | Issue:2 Page(s): 43-51

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Title

Study of the effect of the alkali and alkaline earth cations on the L– cysteine modified silver nanoparticles and application of it as a colorimetric sensor

Author(s)

Bamdad Farzad | HABIBI ZAHRA | Issue Writer Certificate

Keywords

Alkali and alkaline earth cationsQ1

Silver nanoparticlesQ1

Colorimetric sensorQ1

L-cysteineQ1

Abstract

In this work, the effect of Alkali and alkaline earth cations on the aggregation of modified Silver nanoparticles (AgNPs) was investigated. The cysteine-caped nanoparticles were used as a simple and low-cost Colorimetric sensor for detecting alkaline earth metal cation. The determination process was based on the surface plasmon resonance properties of AgNPs, interaction of AgNPs with alkaline earth metal cations in the presence of cysteine molecules induced a red shift in the surface plasmon resonance (SPR) maximum of AgNPs, as a result of nanoparticles aggregation. Consequently, yellow color of AgNPs solution was changed to pink. The examined cations were Mg 2+ 2+ 2+, Ca and Ba, calibration curve equation, limit of detection and linear range for each cation were obtained and investigated. The best detection limit and sensitivity were observed for Ba 2+ ions. Thus, the proposed method was applied to the determination of barium ions in aqueous samples. In order to eliminate the interferences due to the presence of other cations, all measurements were carried out at pH 7 and in the presence of appropriate amounts of EDTA as masking agent.

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APA: Copy

Bamdad, Farzad, & HABIBI, ZAHRA. (2020). Study of the effect of the alkali and alkaline earth cations on the L– cysteine modified silver nanoparticles and application of it as a colorimetric sensor. NANOSCALE, 7(2 ), 43-51. SID. https://sid.ir/paper/256970/en

Vancouver: Copy

Bamdad Farzad, HABIBI ZAHRA. Study of the effect of the alkali and alkaline earth cations on the L– cysteine modified silver nanoparticles and application of it as a colorimetric sensor. NANOSCALE[Internet]. 2020;7(2 ):43-51. Available from: https://sid.ir/paper/256970/en

IEEE: Copy

Farzad Bamdad, and ZAHRA HABIBI, “Study of the effect of the alkali and alkaline earth cations on the L– cysteine modified silver nanoparticles and application of it as a colorimetric sensor,” NANOSCALE, vol. 7, no. 2 , pp. 43–51, 2020, [Online]. Available: https://sid.ir/paper/256970/en

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