Abstract
Synthesis and Characterization of Porphyrin-Functionalized Shell-Isolated GoldNanoparticles for Metal Ion Detection
Highlights
Submission: 01 August, 2018 Accepted: 04 Septmber, 2018 Published: 10 September, 2018upon metal ion exchange
Generation of Au NPs and Au@SiO2 core/shell NPs were spectroscopically confirmed by the appearance of an absorption band at 540 nm in their UV-VIS spectra (Figure 2)
Analysis of similar Transmission electron microscopy (TEM) of Au NPs (Figure 4a) yielded a histogram shown in figure 4B confirmed a medium particle diameter of 55 nm
Summary
Submission: 01 August, 2018 Accepted: 04 Septmber, 2018 Published: 10 September, 2018upon metal ion exchange. Basu et al described using 4,4-dimethyl-4H-5-oxa-1,3,dithia-6,11diazacyclopenta[α]anthracen-2one for Pb2+ fluorescence detection [18] Many of these systems are limited in practical use due to poor aqueous solubility, short emission wavelengths, and weak fluorescence intensities [12]. Small amounts of certain heavy metals are essential for a healthy life. These same metal ions can be problematic at higher concentration (e.g. Zinc and Copper) [1]. Because metals are not biodegradable, they remain in the environment and accumulate in the food chain For this reason, organizations worldwide have strictly defined the concentration limits of heavy metals in drinking water [4,5]
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