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Gao W, Zhang S, Wang G, Cui J, Lu Y, Rong X, Luo Y, Zhang L, Cheng Z, Gao C. Nitrogen and sulfur co-doped carbon quantum dots as "on-off-on" fluorescence probes to detect Hg 2+ and MnO 4- and improving the photostability of Rhodamine B. Anal Chim Acta 2023; 1277:341683. [PMID: 37604617 DOI: 10.1016/j.aca.2023.341683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 07/26/2023] [Accepted: 07/31/2023] [Indexed: 08/23/2023]
Abstract
BACKGROUND Carbon quantum dot (CQDs) are zero-dimensional carbon nanomaterials with a size of less than 10 nm CQDs are widely used in the field of ion detection by virtue of their fluorescence characteristics such as strong fluorescence intensity, good optical stability and tunable emission wavelength. Although the traditional atomic absorption method, electrochemical method and other metal ion detection methods are highly sensitive, the operation is complex, expensive and limited by the site. Therefore, we prepared the N, S-CQDs capable of detecting Hg2+ and MnO4- in water with the advantages of simple operation, low cost, and direct visual signal. RESULTS N, S-CQDs with high-quantum yield (77.68%), uniform particle size (0.4 nm-2.6 nm) and green fluorescence were created utilizing a one-pot hydrothermal process with the precursors ASDA-Na4 and m-phenylenediamine. N, S-CQDs has good optical properties such as high fluorescence intensity, wavelength independence, up-conversion luminescence and fluorescence stability. We examined 27 common ions in water and found that the fluorescence of N, S-CQDs could be selectively quenched by Hg2+ and MnO4-, and the detection limits are 0.41 μM and 1.2 μM, respectively. The mechanism of quenching is further investigated. The fluorescence of N, S-CQDs-Hg2+ system can be restored by halogen ions (Cl-, Br-, I-), while the fluorescence of N, S-CQDs-MnO4- system can be partially restored by Fe2+. This forms an "on-off-on" mode of fluorescent probes. In addition, we also studied that trace amounts of N, S-CQDs can improve the photostability of RhB. SIGNIFICANCE The N, S-CQDs are fluorescent probes in an "on-off-on" mode. N, S-CQDs with green fluorescence (on) can be quenched by Hg2+ and MnO4- (off). The fluorescence quenched by Hg2+ can be restored by halogen ions again, while the fluorescence quenched by MnO4- can partially be restored (on). This ion detection method can be used to visually detect the two ions in the field, with the advantages of low cost, simple operation and visual intuition.
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Affiliation(s)
- Wensu Gao
- School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong, China.
| | - Shurong Zhang
- School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong, China.
| | - Guiqiao Wang
- School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong, China.
| | - Jinzhi Cui
- School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong, China.
| | - Yaxin Lu
- School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong, China.
| | - Xing Rong
- School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong, China.
| | - Yawen Luo
- School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong, China.
| | - LiChao Zhang
- School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong, China.
| | - Zhongfa Cheng
- Shandong Taihe Technologies Co, Ltd, Zaozhuang, Shandong, China.
| | - Canzhu Gao
- School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong, China.
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Abdulsatar Esmail L, Sanaan Jabbar H. Violuric acid carbon dots as a highly fluorescence probe for ultrasensitive determination of Zn (II) in tomato paste. Food Chem 2023; 413:135638. [PMID: 36773356 DOI: 10.1016/j.foodchem.2023.135638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/31/2023] [Accepted: 02/01/2023] [Indexed: 02/06/2023]
Abstract
Zinc is an essential metal since it plays an important role in biological systems, therefore, determination of zinc in food samples is important. Violuric acid was used to prepare highly fluorescent carbon dots (CDs), when it irradiated with ultraviolet radiation at 365 nm, a strong violet fluorescence was observed which caused by the increased amount of nitrogen in the CD structure, which were then successfully used for sensing zinc ion based on quenching of fluorescence. Violuric acid's hydrothermal carbonization reaction's temperature and time were simply optimized for better-quality performance of the CDs as-synthesized. The probe was characterized by HRTEM, SEM, XRD, EDX, fluorescence, UV-Visible absorption spectrophotometry, and FTIR. With a lower LOD 0.32 nM, the developed approach demonstrates an exceptional sensitivity and good selective response to the Zn2+ at 25℃. Compared to the results from ICP, the sensor was successfully used for determination of Zn2+ ions in tomato paste samples.
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Affiliation(s)
- Lawen Abdulsatar Esmail
- Department of Chemistry, College of Science, Salahaddin University-Erbil, Kurdistan Region, Iraq
| | - Hijran Sanaan Jabbar
- Department of Chemistry, College of Science, Salahaddin University-Erbil, Kurdistan Region, Iraq.
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Sun L, Wei W, Zhang H, Xu J, Zhao X. A simple colorimetric and fluorescent “on-off-on” dual-mode sensor based on cyan fluorescent carbon dots/AuNPs for the detection of L-cysteine and Zinc thiazole. Microchem J 2022. [DOI: 10.1016/j.microc.2021.107079] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Cheng Y, Wei Y, Fang C, Chen J, Zhao W. Facile synthesis of CQDs/Ag NPs composites with photoluminescence and their potential application in antibacterial materials. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.109059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Moaddab A, Ghasemi S. Green synthesis of silver/carbon dot nanoparticles from Malva Sylvestris for fluorescence determination of tetracycline. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106222] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Arroyave M, Springer V, Centurión ME. Novel Synthesis Without Separation and Purification Processes of Carbon Dots and Silver/Carbon Hybrid Nanoparticles. J Inorg Organomet Polym Mater 2019. [DOI: 10.1007/s10904-019-01266-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Chen X, Shan X, Lan Q, Chen Z. Electrochemiluminescence Quenching Sensor of a Carboxylic Carbon Nanotubes Modified Glassy Carbon Electrode for Detecting Crystal Violet Based on Nitrogen-doped Graphene Quantum Dots@Peroxydisulfate System. ANAL SCI 2019; 35:929-934. [PMID: 31061243 DOI: 10.2116/analsci.19p090] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In this work, the electrochemiluminscence system of nitrogen-doped graphene quantum dots (N-GQDs) and K2S2O8 was built for the determination of crystal violet (CV). Meanwhile, a carboxylic carbon nanotubes modified glassy carbon electrode (CCNTs/GCE) was used as an ECL sensor. Thanks to the excellent electron transfer ability and large surface area of CCNTs, the ECL signal of N-GQDs@S2O82- was remarkablely amplified. With the presence of a low concentration of CV, a distinct decrease of the ECL signal was observed due to a quenching effect of CV on the ECL emission. Moreover, the quenched ECL intensity responded linearly to the logarithm of CV concentration within the range of 0.05 - 5 μmol/L, with a LOD of 45 nmol/L (S/N = 3). The proposed ECL system exhibited high sensitivity and specificity to CV, which was successfully applied in the practical detection of CV in real water samples from a local fishpond farm.
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Affiliation(s)
- Xiaohui Chen
- School of Chemistry and Material Engineering, Changzhou Vocational Institute of Engineering
| | - Xuelin Shan
- School of Materials Science & Engineering, Changzhou University
| | - Qiufeng Lan
- School of Materials Science & Engineering, Changzhou University
| | - Zhidong Chen
- School of Materials Science & Engineering, Changzhou University
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Song J, Zhao L, Wang Y, Xue Y, Deng Y, Zhao X, Li Q. Carbon Quantum Dots Prepared with Chitosan for Synthesis of CQDs/AuNPs for Iodine Ions Detection. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E1043. [PMID: 30551611 PMCID: PMC6315431 DOI: 10.3390/nano8121043] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 12/08/2018] [Accepted: 12/11/2018] [Indexed: 01/09/2023]
Abstract
Water-soluble and reductive carbon quantum dots (CQDs) were fabricated by the hydrothermal carbonization of chitosan. Acting as a reducing agent and stabilizer, the as-prepared CQDs were further used to synthesize gold nanoparticles (AuNPs). This synthetic process was carried out in aqueous solution, which was absolutely "green". Furthermore, the CQDs/AuNPs composite was used to detect iodine ions by the colorimetric method. A color change from pink to colorless was observed with the constant addition of I- ions, accompanied by a decrease in the absorbance of the CQDs/AuNPs composite. According to the absorbance change, a favorable linear relationship was obtained between ΔA and I- concentration in the range of 20⁻140 μM and 140⁻400 μM. The detection limit of iodide ions, depending on the 3δ/slope, was estimated to be 2.3 μM, indicating high sensitivity to the determination of iodide. More importantly, it also showed good selectivity toward I- over other anion ions, and was used for the analysis of salt samples. Moreover, TEM results indicated that I- ions induced the aggregation of CQDs/AuNPs, resulting in changes in color and absorbance.
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Affiliation(s)
- Juanjuan Song
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
| | - Li Zhao
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
| | - Yesheng Wang
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
| | - Yun Xue
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
| | - Yujia Deng
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
| | - Xihui Zhao
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, Qingdao University, Qingdao 266071, China.
| | - Qun Li
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, Qingdao University, Qingdao 266071, China.
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Pięk M, Paczosa-Bator B, Smajdor J, Piech R. Molecular organic materials intermediate layers modified with carbon black in potentiometric sensors for chloride determination. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.07.121] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Yang J, Lin ZZ, Nur AZ, Lu Y, Wu MH, Zeng J, Chen XM, Huang ZY. Detection of trace tetracycline in fish via synchronous fluorescence quenching with carbon quantum dots coated with molecularly imprinted silica. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 190:450-456. [PMID: 28961529 DOI: 10.1016/j.saa.2017.09.066] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Revised: 09/15/2017] [Accepted: 09/20/2017] [Indexed: 06/07/2023]
Abstract
A novel fluorescence-based sensor combining synchronous fluorescence spectroscopy (SFS) with molecularly imprinted polymers (MIPs) was fabricated with reverse microemulsion method. Tetracycline (TC), (3-aminopropyl) triethoxysilane (APTES), tetraethyl orthosilicate (TEOS) and carbon quantum dots (CDs) were used as template, functional monomer, cross-linker and signal sources respectively in the probe preparation. A synchronous fluorescence emission (λem) at 355nm was observed for the prepared MIP-coated CDs (MIP@CDs) particles when the wavelength interval (Δλ) was set as 70nm, and the synchronous fluorescence intensity could be rapidly and efficiently quenched by TC based on inner filter effect (IFE). The quenching efficiencies of synchronous fluorescence intensity was linearly fitted with tetracycline (TC) concentrations ranging from 0.1 to 50μmolL-1 with a detection limit (DL) of 9nmolL-1 (3σ, n=9). The MIP@CDs was used as a probe to detect TC in fish samples with the recoveries ranging from 98.4% to 103.1% and the relative standard deviation less than 6.0%. The results illustrated that the as-prepared MIP@CDs could be applied to the detection of trace TC in fish samples with rapidity, high sensitivity and accuracy.
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Affiliation(s)
- Ji Yang
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Zheng-Zhong Lin
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - A-Zha Nur
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Yan Lu
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Ming-Hui Wu
- Department of Chemical and Biochemical Engineering, Xiamen University, Xiamen 361005, China
| | - Jun Zeng
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Xiao-Mei Chen
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Zhi-Yong Huang
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China; Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Xiamen 361102, China.
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