Starch based nanocomposites as sensors for heavy metals – detection of Cu2+ and Pb2+ ions

Gohar Khachatryan , Karen Khachatryan


Inorganic nanocomposites can find application in various branches of industry, including food technology. Quantum dots have already been reported as promising nanosensors for the detection of heavy metal ions in soil, water and food. This study presents novel starch-based nanocomposites containing ZnS quantum dots capped with L-cysteine. The nanocomposites were prepared in form of gels and foils of potato starch with embedded spherical quantum dots sized 10-20 nm. They were characterized using photoluminescence, IR and UV spectra and TEM/SEM photographs. Pb2+ and Cu2+ ions decreased emission intensity of the photoluminescent spectral bands. The described quantum dots have been obtained using a simple, safe and low-cost method. Their properties make them alternative sensors for Pb2+ and Cu2+ ions that could be applied in biotechnology and food technology.
Author Gohar Khachatryan (FoFT / IoCh)
Gohar Khachatryan,,
- Institute of chemistry
, Karen Khachatryan (FoFT / IoCh)
Karen Khachatryan,,
- Institute of chemistry
Journal seriesInternational Agrophysics, ISSN 0236-8722, e-ISSN 2300-8725, (N/A 70 pkt)
Issue year2019
Publication size in sheets0.5
Keywords in Englishstarch, nanocomposites, heavy metals, nano-sensors, quantum dots
ASJC Classification1100 General Agricultural and Biological Sciences; 1111 Soil Science; 1507 Fluid Flow and Transfer Processes; 2312 Water Science and Technology
Internal identifierWTŻ/2019/19
Languageen angielski
Score (nominal)70
Score sourcejournalList
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.891; WoS Impact Factor: 2018 = 1.227 (2) - 2018=1.548 (5)
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