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Detection of Fe3+ ions in aqueous environment using fluorescent carbon quantum dots synthesized from endosperm of Borassus flabellifer

M. NagarajDepartment of Food Science and Technology, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, 38541, Republic of KoreaSrinivasan RamalingamDepartment of Food Science and Technology, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, 38541, Republic of KoreaChandran MuruganSRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, IndiaSaad AldawoodDepartment of Physics and Astronomy, College of Science, P.O. BOX 2455, King Saud University, Riyadh, 11451, Saudi ArabiaJun-O JinDepartment of Medical Biotechnology, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, 38541, Republic of Korea; Research Institute of Cell Culture, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, 38541, Republic of KoreaInho ChoiDepartment of Medical Biotechnology, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, 38541, Republic of Korea; Research Institute of Cell Culture, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, 38541, Republic of KoreaMyung‐Hee KimDepartment of Food Science and Technology, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, 38541, Republic of Korea; Research Institute of Cell Culture, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, 38541, Republic of Korea. Electronic address: [email protected]

2022en

ABI

Annotatsiya

Natural products derived carbon quantum dots (CQDs) catch huge attention owing to their distinctive properties of smaller size, water dispersibility, high photostability, lower cost, tunable emission, biocompatibility, least toxicity, electrical conductivity, optical and catalytic properties, and easy modification. Herein high fluorescent CQDs were prepared using Borassus flabellifer (ice apple) as a carbon source utilizing the simplistic one-step hydrothermal method. The prepared CQDs possessed excellent photoluminescence, high photostability, and stability in an aqueous solution and harbored large of quantum yield and strong stability in high pH conditions with the characteristic strong blue fluorescence emission. With these superior properties, the CQDs have been used as sensing probes for the detection of Fe3+ ions having excellent selectivity and sensitivity with a 2.01 μM limit of detection. The CQDs decorated probe was found effective in detecting Fe3+ ions in the tap and drinking mineral water, suggesting the applicability of the prepared sensor. The developed sensor exhibited advantages, including simple, low-cost, label-free, rapid, and good sensitivity and selectivity towards Fe3+ ions, with a great application for detection of such ions in real water.

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Identifikatorlar

DOI: 10.1016/j.envres.2022.113273

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