Naslov
Quantum yield optimization of hybrid carbon quantum dots and their application as sensing nanomaterial

Autori
Šafranko, Silvija ; Mandić, Šimun ; Šubarić, Drago ; Jokić, Stela

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
28th Croatian Meeting of Chemists and Chemical Engineers - Book of Abstracts / Rogošić, Marko - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2023, 209-209

Skup
28th Croatian Meeting of Chemists and Chemical Engineers

Mjesto i datum
Rovinj, Hrvatska, 28.03.2023. - 31.03.2023

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
carbon quantum dots ; nanoparticle functionalization ; metal ion detection

Sažetak
Carbon quantum dots (CQDs), as a new type of zero- dimensional carbon-based nanomaterials, represent an emerging class of fluorescent materials for potential applications in biosensing, chemical sensing, and in theranostics. Also, CQDs have attracted an enormous attention due to their outstanding physico-chemical and tunable optical properties, water dispersity, high photostability and biocompatibility. In this study, hybrid carbon quantum dots (CQDs@hybrid) have been prepared by hydrothermal procedure and quantum yield was optimized using response surface methodology (RSM). The process was analyzed and optimized with a central composite face-centered design (CCFD) model in a quadratic function consisting of 11 experimental runs with included three replicates at the central point. The effects of temperature (160–200°C ; X1), and preparation time (6–12 h ; X2) was investigated on the quantum yield (y) obtained by CQDs@hybrid sample. The sample of CQDs@hybrid obtained under optimal conditions exhibited high quantum yield of 17.52 ± 0.59 %, and was studied in details regarding chemical (solubility, EDS), physical (AFM, FTIR, PXRD), and optical (spectrofluorimetry, UV-Vis spectroscopy). Furthermore, the sample CQDs@hybrid were applied as fluorescent nanoprobe toward Fe3+ ion detection in model systems, and also for the detection of Fe3+ ions in real samples of well- water, herbs and spices. The presented results are indicative of a good preparative approach toward obtaining highly fluorescent CQDs with a great potential for the studies in water monitoring, food analysis and quality control.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Interdisciplinarne prirodne znanosti, Farmacija, Prehrambena tehnologija

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