Detection of toxic metal ions Pb2+ in water using SiO2@Au core-shell nanostructures: A simple technique for water quality monitoring

TitleDetection of toxic metal ions Pb2+ in water using SiO2@Au core-shell nanostructures: A simple technique for water quality monitoring
Publication TypeJournal Article
Year of Publication2019
AuthorsDaware, K, Kasture, M, Kalubarme, R, Shinde, R, Patil, K, Suzuki, N, Terashima, C, Gosavi, S, Fujishim, A
JournalChemical Physics Letters
Volume732
Date PublishedOCT
Type of ArticleArticle
Abstract

The present paper demonstrates a development of simple, sensitive and selective optical probe for detection of Pb2+ ions in water using monodispersed silica-gold core-shell nanostructures (SiO2@Au NSs). Structural and elemental analysis confirms the phase purity of nanostructures. The SPR studies for SiO2 @Au NSs reveals, linear dynamic range for Pb2+ ions detection, in the concentration range of 100 ppb to 2 ppm, with detection limit of 100 ppb, which is 5 times higher than AuNPs. Cross sensitivity study confirm its selectivity towards Pb2+ ions over other metal ions. XPS analysis shows the interaction of Pb2+ ions with core-shell NPs.

DOI10.1016/j.cplett.2019.136635
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

1.901

Divison category: 
Physical and Materials Chemistry

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