Tailoring plastic bag derived carbon dots by sulfur-nitrogen passivation for highly selective Fe (III) ion sensing

IF 4.4 3区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Inorganic Chemistry Communications Pub Date : 2025-02-26 DOI:10.1016/j.inoche.2025.114187
Ratih Lestari , Yuichi Kamiya , Tutik Dwi Wahyuningsih , Indriana Kartini
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Abstract

Plastic bags were used to produce carbon dots (CDs), which can contribute to solving environmental problems. The enhanced quantum yield (QY) was achieved in this study through the passivation of CDs with sulfur (S) and nitrogen (N). Pyrolysis and hydrothermal methods were used to produce S-N co-doped CDs (S-N-CDs) from plastic bags. Notably, S-N-CDs significantly enhanced the QY to 16.20 %. The resulting S-N-CDs retained remarkable fluorescence performance over high ionic strengths and UV light irradiation. The incorporation of functional groups containing oxygen, sulfur, and nitrogen in S-N-CDs created recognition sites that enable specific and highly selective sensing of Fe3+ ions, with a quenching ability of up to 62 %. Moreover, these S-N-CDs displayed a wide linearity in the range of 110.64–600 µM for Fe3+ ion detection. The sensing system exhibited exceptional performance in detecting Fe3+ in actual water samples with %Recovery of 90–100 % and %RSD below 0.39 %, The findings highlight the prospect of S-N-CDs from plastic bags as promising sensors for future environmental analysis, addressing the urgent need for effective and sustainable solutions.

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利用塑料袋生产碳点(CD)有助于解决环境问题。本研究通过硫(S)和氮(N)对碳点进行钝化,实现了量子产率(QY)的提高。研究人员采用热分解和水热法从塑料袋中制备出 S-N 共掺杂的光盘(S-N-CDs)。值得注意的是,S-N-CDs 显著提高了 QY,达到 16.20%。所制备的 S-N-CD 在高离子强度和紫外线照射下仍能保持出色的荧光性能。在 S-N-CD 中加入含氧、硫和氮的官能团可产生识别位点,从而实现对 Fe3+ 离子的特异性和高选择性传感,淬灭能力高达 62%。此外,这些 S-N-CD 在 110.64-600 µM 的 Fe3+ 离子检测范围内显示出较宽的线性。该传感系统在检测实际水样中的 Fe3+ 离子时表现出卓越的性能,回收率高达 90-100 %,RSD 低于 0.39 %。
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来源期刊
Inorganic Chemistry Communications
Inorganic Chemistry Communications 化学-无机化学与核化学
CiteScore
5.50
自引率
7.90%
发文量
1013
审稿时长
53 days
期刊介绍: Launched in January 1998, Inorganic Chemistry Communications is an international journal dedicated to the rapid publication of short communications in the major areas of inorganic, organometallic and supramolecular chemistry. Topics include synthetic and reaction chemistry, kinetics and mechanisms of reactions, bioinorganic chemistry, photochemistry and the use of metal and organometallic compounds in stoichiometric and catalytic synthesis or organic compounds.
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