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Pu Q, Wang C, Yin X, Ye N, Zhang L, Xiang Y. A ratiometric fluorescent dark box and smartphone integrated portable sensing platform based on hydrogen bonding induction for on-site determination of enrofloxacin. Food Chem 2024; 455:139876. [PMID: 38823143 DOI: 10.1016/j.foodchem.2024.139876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 05/15/2024] [Accepted: 05/27/2024] [Indexed: 06/03/2024]
Abstract
Enrofloxacin (ENR) residues in animal-derived food and water threaten human health. Simple, low-cost and on-site detection methods are urgently needed. Blue emitting carbon quantum dots (CQDs) and orange rhodamine B (RhB) were used as recognition and reference signals, respectively, to construct a ratiometric fluorescence sensor. After the addition of ENR, the color of the sensor changed from orange to blue because hydrogen bonding induced a considerable increase in CQDs fluorescence. Based on this mechanism, a simple and low cost on-site portable sensing platform was constructed, which integrated a stable UV light strip and a smartphone with voice-controlled phototaking function and an RGB app. The t-test results of spiked ENR recoveries for diluted milk, honey and drinking water revealed no significant differences between the ratiometric fluorescent sensor and portable sensing platform. Thus, this portable sensing platform provides a novel strategy for on-site quantification of quinolone antibiotics in foodstuffs and environmental water.
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Affiliation(s)
- Qi Pu
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Chumeng Wang
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Xinyue Yin
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Nengsheng Ye
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Lu Zhang
- Department of Chemistry, Capital Normal University, Beijing 100048, China.
| | - Yuhong Xiang
- Department of Chemistry, Capital Normal University, Beijing 100048, China.
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Vyas Y, Chundawat P, Dharmendra D, Chaubisa P, Kumar M, Punjabi PB, Ameta C. Revolutionizing fuel production through biologically synthesized zero-dimensional nanoparticles. NANOSCALE ADVANCES 2023; 5:4833-4851. [PMID: 37705808 PMCID: PMC10496885 DOI: 10.1039/d3na00268c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Accepted: 07/28/2023] [Indexed: 09/15/2023]
Abstract
The sustainable management of wastewater and the production of clean fuel with a reduced carbon footprint require innovative methods, including photocatalytic degradation of pollutants and hydrogen generation. To achieve this, biosynthesized photocatalysts are necessary, with carbon quantum dots (CQDs) being a promising candidate for achieving this goal. In this study, CQDs were prepared from water caltrop peels and a composite of greenly synthesized CQDs with copper selenide (CuSe) was used for the photocatalytic degradation of pollutants and production of fuel. Thymol blue (TB) and Congo red (CR) were chosen as model dyes for degradation studies, with optimized reaction conditions being determined by varying the dose, pH, intensity, and concentration of dyes. The composite (CuSe@CQDs) showed a degradation rate of 99.4% and 97.8% for TB and CR, respectively, within 60 minutes, with a corresponding hydrogen production rate of 2360 and 1875 μmol g-1 h-1. The yield of hydrogen production using the composite was 35.7 and 29 times greater than that of CuSe alone for TB and CR, respectively. Spectroscopic techniques such as XRD, UV-Vis, FESEM, HRTEM, XPS, FTIR, BET, and TGA were used to characterize the composite, and the results revealed that the composite had superior degradation rates compared to CuSe alone, with the degradation rate being enhanced by about three times. GCMS analysis was used to investigate the intermediate and possible degradation pathways. Overall, this study highlights the potential of biosynthesized CQDs as effective photocatalysts for the sustainable management of wastewater and production of fuel.
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Affiliation(s)
- Yogeshwari Vyas
- Photochemistry Laboratory, Department of Chemistry, University College of Science, M.L. Sukhadia University Udaipur-313001 Rajasthan India
| | - Priyanka Chundawat
- Photochemistry Laboratory, Department of Chemistry, University College of Science, M.L. Sukhadia University Udaipur-313001 Rajasthan India
| | - Dharmendra Dharmendra
- Photochemistry Laboratory, Department of Chemistry, University College of Science, M.L. Sukhadia University Udaipur-313001 Rajasthan India
| | - Purnima Chaubisa
- Photochemistry Laboratory, Department of Chemistry, University College of Science, M.L. Sukhadia University Udaipur-313001 Rajasthan India
| | - Mukesh Kumar
- Department of Chemistry, Sahu Jain Degree College, Affiliated toM. J. P. Rohilkhand University, Bareilly Najibabad Bijnor-246763 India
| | - Pinki B Punjabi
- Photochemistry Laboratory, Department of Chemistry, University College of Science, M.L. Sukhadia University Udaipur-313001 Rajasthan India
| | - Chetna Ameta
- Photochemistry Laboratory, Department of Chemistry, University College of Science, M.L. Sukhadia University Udaipur-313001 Rajasthan India
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Chen J, Wang Y, Wang L, Liu M, Fang L, Chu P, Gao C, Chen D, Ren D, Zhang J. Multi-applications of carbon dots and polydopamine-coated carbon dots for Fe 3+ detection, bioimaging, dopamine assay and photothermal therapy. NANOSCALE RESEARCH LETTERS 2023; 18:30. [PMID: 36862234 DOI: 10.1186/s11671-023-03809-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 11/19/2022] [Indexed: 05/24/2023]
Abstract
Carbon dots (CDs) or CDs/polymer composites have been applied in numerous fields. Here, novel CDs were synthesized by carbonization of egg yolk, and characterized by TEM, FTIR, XPS and photoluminescence spectra. The CDs were found to be approximate sphere in shape with an average size of 4.46 ± 1.17 nm, and emitted bright blue photoluminescence under UV irradiation. The photoluminescence of CDs was found selectively quenched by Fe3+ in a linear manner in the range of 0.05-0.45 mM, meaning they could be applied for Fe3+ detection in solution. Moreover, the CDs could be uptaken by HepG2 cells to exhibit bright blue photoluminescence. The intensity could reflect the level of intracellular Fe3+, indicating they could be further used for cell imaging and intracellular Fe3+ monitoring. Next, dopamine was polymerized on the surface of CDs to obtain the polydopamine (PDA)-coated CDs (CDs@PDA). We found PDA coating could quench the photoluminescence of CDs via inner filter effect, and the degree of quenching was linearly related to the logarithm of DA concentration (Log CDA). Also, the selectivity experiment indicated the method had a high selectivity for DA over a number of possible interfering species. This indicated the CDs in combination with Tris buffer could be potentially applied as the assay kit of dopamine. At last, the CDs@PDA exhibited excellent photothermal conversion capability, and they could efficiently kill HepG2 cells under NIR laser irradiation. Overall, the CDs and CDs@PDA in this work exhibited many excellent advantages, and could be potentially used for multi-applications, such as Fe3+ sensor in solution and cellular, cell imaging, dopamine assay kit, as well as photothermal agents for cancer therapy.
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Affiliation(s)
- Jun Chen
- Collage of Pharmacy, Dalian Medical University, 9 West Sect Lvshun South Rd, Dalian, 116044, China
- Laboratory Animal Center, Dalian Medical University, Dalian, 116044, China
| | - Yuting Wang
- Collage of Pharmacy, Dalian Medical University, 9 West Sect Lvshun South Rd, Dalian, 116044, China
| | - Liang Wang
- Laboratory Animal Center, Dalian Medical University, Dalian, 116044, China
| | - Mingjie Liu
- Collage of Pharmacy, Dalian Medical University, 9 West Sect Lvshun South Rd, Dalian, 116044, China
| | - Linlin Fang
- Collage of Pharmacy, Dalian Medical University, 9 West Sect Lvshun South Rd, Dalian, 116044, China
| | - Peng Chu
- Collage of Pharmacy, Dalian Medical University, 9 West Sect Lvshun South Rd, Dalian, 116044, China
| | - Chuanzhou Gao
- Institute of Cancer Stem Cell, Dalian Medical University, Dalian, 116044, China
| | - Dapeng Chen
- Laboratory Animal Center, Dalian Medical University, Dalian, 116044, China
| | - Dongze Ren
- Collage of Pharmacy, Dalian Medical University, 9 West Sect Lvshun South Rd, Dalian, 116044, China
| | - Jianbin Zhang
- Collage of Pharmacy, Dalian Medical University, 9 West Sect Lvshun South Rd, Dalian, 116044, China.
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He L, Du H. Detection of tartrazine with fluorescence sensor from crayfish shell carbon quantum dots. J Food Compost Anal 2023. [DOI: 10.1016/j.jfca.2023.105200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Kateshiya MR, Desai ML, Malek NI, Kailasa SK. Advances in Ultra-small Fluorescence Nanoprobes for Detection of Metal Ions, Drugs, Pesticides and Biomarkers. J Fluoresc 2022; 33:775-798. [PMID: 36538145 DOI: 10.1007/s10895-022-03115-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 12/07/2022] [Indexed: 12/24/2022]
Abstract
Identification of trace level chemical species (drugs, pesticides, metal ions and biomarkers) plays key role in environmental monitoring. Recently, fluorescence assay has shown significant advances in detecting of trace level drugs, pesticides, metal ions and biomarkers in real samples. Ultra-small nanostructure materials (metal nanoclusters (NCs), quantum dots (QDs) and carbon dots (CDs)) have been integrated with fluorescence spectrometer for sensitive and selective analysis of trace level target analytes in various samples including environmental and biological samples. This review summarizes the properties of metal NCs and ligand chemistry for the fabrication of metal NCs. We also briefly summarized the synthetic routes for the preparation of QDs and CDs. Advances of ultra-small fluorescent nanosensors (NCs, QDs and CDs) for sensing of metal ions, drugs, pesticides and biomarkers in various sample matrices are briefly discussed. Additionally, we discuss the recent challenges and future perspectives of ultra-small materials as fluorescent sensors for assaying of wide variety of target analytes in real samples.
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Fighting Non-Small Lung Cancer Cells Using Optimal Functionalization of Targeted Carbon Quantum Dots Derived from Natural Sources Might Provide Potential Therapeutic and Cancer Bio Image Strategies. Int J Mol Sci 2022; 23:ijms232113283. [PMID: 36362075 PMCID: PMC9658332 DOI: 10.3390/ijms232113283] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/05/2022] [Accepted: 10/21/2022] [Indexed: 11/06/2022] Open
Abstract
Non-small cell lung cancer (NSCLC) is an important sub-type of lung cancer associated with poor diagnosis and therapy. Innovative multi-functional systems are urgently needed to overcome the invasiveness of NSCLC. Carbon quantum dots (CQDs) derived from natural sources have received interest for their potential in medical bio-imaging due to their unique properties, which are characterized by their water solubility, biocompatibility, simple synthesis, and low cytotoxicity. In the current study, ethylene-diamine doped CQDs enhanced their cytotoxicity (98 ± 0.4%, 97 ± 0.38%, 95.8 ± 0.15%, 86 ± 0.15%, 12.5 ± 0.14%) compared to CQDs alone (99 ± 0.2%, 98 ± 1.7%, 96 ± 0.8%, 93 ± 0.38%, 91 ± 1.3%) at serial concentrations (0.1, 1, 10, 100, 1000 μg/mL). In order to increase their location in a specific tumor site, folic acid was used to raise their functional folate recognition. The apoptotic feature of A549 lung cells exposed to N-CQDs and FA-NCQDs was characterized by a light orange-red color under fluorescence microscopy. Additionally, much nuclear fragmentation and condensation were seen. Flow cytometry results showed that the percentage of cells in late apoptosis and necrosis increased significantly in treated cells to (19.7 ± 0.03%), (27.6 ± 0.06%) compared to untreated cells (4.6 ± 0.02%), (3.5 ± 0.02%), respectively. Additionally, cell cycle arrest showed a strong reduction in cell numbers in the S phase (14 ± 0.9%) compared to untreated cells (29 ± 0.5%). Caspase-3 levels were increased significantly in A549 exposed to N-CQDs (2.67 ± 0.2 ng/mL) and FA-NCQDs (3.43 ± 0.05 ng/mL) compared to untreated cells (0.34 ± 0.04 ng/mL). The functionalization of CQDs derived from natural sources has proven their potential application to fight off non-small lung cancer.
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Abstract
Heavy fractions of petroleum have for long time been bypassed in favour of lighter fractions. Nowadays, in the framework of the “circular economy”, there is a growing interest in residual petroleum heavy fractions. The present work briefly reviews the use and characterization at laboratory scale of some low valuable solid or semi-solid products of the oil refinery industry: asphaltenes (bitumen/asphalt), pet-coke and pitch for use as fuels. The use of solid and semi-solid refinery residues, in particular, of coke as a coal substitute in thermochemical processes and of pitch and asphaltenes as material precursors, requires careful analysis, and an understanding of their structure at the molecular level is mandatory for the development of processing technology. Techniques for the characterization of typical petroleum heavy fractions such as pitches, asphaltenes and cokes are reviewed. An experimental protocol for investigating at the laboratory scale the thermochemical conversion behavior of solid and semi-solid refinery wastes is proposed.
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Hou Q, Xing B, Guo H, Kang W, Yi G, Song C, Zhang C, Zhang Y. Application of coal-based carbon dots for photocatalysis and energy storage: a minireview. NEW J CHEM 2022. [DOI: 10.1039/d2nj03041a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Refined deep processing and utilization of high-value-added coal and transforming it into an enviro-friendly product is a pressing requirement to break the bottleneck of coal development. Carbon dots (CDs) are...
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Qi C, Wang H, Yang A, Wang X, Xu J. Facile Fabrication of Highly Fluorescent N-Doped Carbon Quantum Dots Using an Ultrasonic-Assisted Hydrothermal Method: Optical Properties and Cell Imaging. ACS OMEGA 2021; 6:32904-32916. [PMID: 34901641 PMCID: PMC8655932 DOI: 10.1021/acsomega.1c04903] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 11/08/2021] [Indexed: 05/03/2023]
Abstract
Fluorescent N-doped carbon nanodots (CNDs) are a type of environmentally friendly nanomaterial that is promising for application in cell imaging and optoelectronics. In this paper, a natural amino acid (l-glutamic acid) was used as a precursor, and two different morphological and structured N-doped carbon quantum dots (CQDs) were synthesized via a one-step ultrasonic-assisted hydrothermal method at 230 and 250 °C. Various microscopy and spectroscopy techniques were employed to characterize the morphology, structure, optical properties, and stability of the CQDs. The results showed that N-CQDs-1 are new CNDs composed of amorphous carbon with a large amount of pyroglutamic acid, and N-CQDs-2 are composed of pure amorphous carbon. The CQDs exhibit excellent optical properties, such as 40.5% quantum yield, strong photobleaching resistance, and superior photostability. Combining the fluorescence lifetimes and radiative and non-radiative decay constants, the photoluminescence mechanism of the CQDs was qualitatively explained. The two CQDs were used for BV2 cell imaging and showed good results, implying the ultrasonic-assisted hydrothermal approach as a facile method to obtain structure- and morphology-controllable N-doped CQDs with prospect for application in cell imaging.
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Affiliation(s)
- Chong Qi
- College
of Physics & Optoelectronic Engineering, Ocean University of China, Qingdao 266100, Shandong Province, China
| | - Huaidong Wang
- College
of Physics & Optoelectronic Engineering, Ocean University of China, Qingdao 266100, Shandong Province, China
| | - Ailing Yang
- College
of Physics & Optoelectronic Engineering, Ocean University of China, Qingdao 266100, Shandong Province, China
| | - Xiaoxu Wang
- College
of Food Science and Engineering, Ocean University
of China, Qingdao 266033, Shandong Province, China
| | - Jie Xu
- College
of Food Science and Engineering, Ocean University
of China, Qingdao 266033, Shandong Province, China
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The recent progress in pitch derived carbon fibers applications. A Review. SOUTH AFRICAN JOURNAL OF CHEMICAL ENGINEERING 2021. [DOI: 10.1016/j.sajce.2021.07.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
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