01862nas a2200217 4500008004100000245013700041210006900178260000800247490000800255520106100263100002001324700002001344700002601364700001901390700002101409700002101430700002201451700001901473700002001492856013201512 2019 eng d00aDetection of toxic metal ions Pb2+ in water using SiO2@Au core-shell nanostructures: A simple technique for water quality monitoring0 aDetection of toxic metal ions Pb2 in water using SiO2Au coreshel cOCT0 v7323 a

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.

1 aDaware, Krishna1 aKasture, Manasi1 aKalubarme, Ramchandra1 aShinde, Rakesh1 aPatil, Kashinath1 aSuzuki, Norihiro1 aTerashima, Chiaki1 aGosavi, Suresh1 aFujishim, Akira uhttps://library.ncl.res.in/content/detection-toxic-metal-ions-pb2-water-using-sio2au-core-shell-nanostructures-simple-technique