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Hao Y, Wang Z, Wang H, Dong W, Liu Y, Hu Q, Shuang S, Dong C, Guo Y, Gong X. Rational design of carbon dot nanozymes for ratiometric dual-signal and smartphone-assisted visual detection of nitrite in food matrices. JOURNAL OF HAZARDOUS MATERIALS 2024; 480:136156. [PMID: 39413512 DOI: 10.1016/j.jhazmat.2024.136156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2024] [Revised: 09/26/2024] [Accepted: 10/11/2024] [Indexed: 10/18/2024]
Abstract
Developing reliable nitrite (NO2-) sensors is essential for food safety and reducing health risks from NO2- exposure. In this study, we strategically designed nitrogen-doped carbon dot (N-CD) nanozymes to establish an accessible dual-signal ratiometric sensing system for detecting NO2- in food matrices. This system utilizes the photoluminescence and enzyme-like properties of N-CD nanozymes combined with NO2--triggered diazotization reactions of substrates such as o-phenylenediamine (OPD) or 3,3',5,5'-tetramethylbenzidine (TMB). The resulting N-CD/OPD and N-CD/TMB composites provide dual-mode detection-fluorescence and colorimetric-with high selectivity for NO2- and excellent resistance to interference. These sensors exhibit clear color changes under both ultraviolet and visible light, and can be combined with smartphones for visual, on-site detection of NO2-. By incorporating a ratiometric strategy, dual-signal output, and smartphone compatibility, our system achieved a low detection limit (≤ 1.92 μM) and satisfactory recovery rates (85.6-115 %) in environmental water and food samples. This highlights the potential of smartphone-assisted sensors for environmental monitoring and food safety applications. Our carbon dot-based platform offers a practical and effective solution for on-site NO2- detection, contributing valuable insights to the field.
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Affiliation(s)
- Yumin Hao
- School of Chemistry and Chemical Engineering and Institute of Environmental Science, Shanxi University, Taiyuan 030006, PR China
| | - Zihan Wang
- School of Chemistry and Chemical Engineering and Institute of Environmental Science, Shanxi University, Taiyuan 030006, PR China
| | - Huiping Wang
- School of Chemistry and Chemical Engineering and Institute of Environmental Science, Shanxi University, Taiyuan 030006, PR China
| | - Wenjuan Dong
- School of Chemistry and Chemical Engineering and Institute of Environmental Science, Shanxi University, Taiyuan 030006, PR China
| | - Yang Liu
- School of Chemistry and Chemical Engineering and Institute of Environmental Science, Shanxi University, Taiyuan 030006, PR China
| | - Qin Hu
- College of Food Chemistry and Engineering, Yangzhou University, Yangzhou 225001, PR China
| | - Shaomin Shuang
- School of Chemistry and Chemical Engineering and Institute of Environmental Science, Shanxi University, Taiyuan 030006, PR China
| | - Chuan Dong
- School of Chemistry and Chemical Engineering and Institute of Environmental Science, Shanxi University, Taiyuan 030006, PR China
| | - Yujing Guo
- School of Chemistry and Chemical Engineering and Institute of Environmental Science, Shanxi University, Taiyuan 030006, PR China.
| | - Xiaojuan Gong
- School of Chemistry and Chemical Engineering and Institute of Environmental Science, Shanxi University, Taiyuan 030006, PR China.
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2
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Yin X, Wang C, Wei S, Liu M, Hu K, Song X, Sun G, Lu L. Carbon dots-based dual-mode sensor for highly selective detection of nitrite in food substrates through diazo coupling reaction. Food Chem 2024; 463:141213. [PMID: 39270494 DOI: 10.1016/j.foodchem.2024.141213] [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: 07/19/2024] [Revised: 09/01/2024] [Accepted: 09/08/2024] [Indexed: 09/15/2024]
Abstract
As an antioxidant and preservative agent, nitrite (NO2-) plays an essential role in the food industry to maintain freshness or inhibit microbial growth. However, excessive addition of NO2- is detrimental to health, so accurate and portable detection of NO2- is critical for food quality control. Notably, the selectivity of most carbon dots (CDs)-based fluorescence sensors was not enough due to the nonspecific interaction mechanism of hydrogen bond, electrostatic interaction and inner filter effect etc. Herein, a novel fluorescence/UV-vis absorption (FL/UV-vis) dual-mode sensor was developed on basis of mC-CDs, which were prepared by simple solvothermal treatment of m-Phenylenediamine (m-PDA) and cyanidin cation (CC). The fluorescence of these mC-CDs could be selectively responded by NO2- through the specific diazo coupling reaction between NO2- and amino groups on the surface of mC-CDs, thus effectively improving the selectivity of NO2- detection. The CDs-based fluorescence sensor possessed a low detection limit of 0.091 μM and 0.143 μM for FL and UV-vis methods and the excellent linear range of 0.0-60.0 μM. Furthermore, the mC-CDs sensor was employed to detect NO2- in real samples with a recovery rate of 97.11 %-104.15 % for quantitative addition. Moreover, the smartphone-assisted fluorescence sensing platform developed could identify the subtle color changes that could not be distinguished by the naked eye, and had the advantages of fast detection speed and intelligence. More importantly, the portable solid phase sensor based on mC-CDs had been successfully applied to the specific fluorescence identification and concentration monitoring of NO2-. Accordingly, the designed sensor provided a new strategy for the highly selective and convenient sensing of NO2- in food substrates, and paved the way for the wide application of CDs-based nanomaterials in the detection of food safety.
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Affiliation(s)
- Xiangyu Yin
- School of Chemistry and Life Science, Changchun University of Technology, 2055 Yanan Street, Changchun 130012, PR China; Advanced Institute of Materials Science, Changchun University of Technology, 2055 Yanan Street, Changchun 130012, PR China
| | - Chenzhao Wang
- School of Chemistry and Life Science, Changchun University of Technology, 2055 Yanan Street, Changchun 130012, PR China
| | - Shanshan Wei
- School of Chemistry and Life Science, Changchun University of Technology, 2055 Yanan Street, Changchun 130012, PR China; Advanced Institute of Materials Science, Changchun University of Technology, 2055 Yanan Street, Changchun 130012, PR China
| | - Min Liu
- School of Chemistry and Life Science, Changchun University of Technology, 2055 Yanan Street, Changchun 130012, PR China; Advanced Institute of Materials Science, Changchun University of Technology, 2055 Yanan Street, Changchun 130012, PR China
| | - Kaixin Hu
- School of Chemistry and Life Science, Changchun University of Technology, 2055 Yanan Street, Changchun 130012, PR China; Advanced Institute of Materials Science, Changchun University of Technology, 2055 Yanan Street, Changchun 130012, PR China
| | - Xuewei Song
- School of Chemistry and Life Science, Changchun University of Technology, 2055 Yanan Street, Changchun 130012, PR China; Advanced Institute of Materials Science, Changchun University of Technology, 2055 Yanan Street, Changchun 130012, PR China
| | - Guoying Sun
- School of Chemistry and Life Science, Changchun University of Technology, 2055 Yanan Street, Changchun 130012, PR China; Advanced Institute of Materials Science, Changchun University of Technology, 2055 Yanan Street, Changchun 130012, PR China.
| | - Lehui Lu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, PR China.
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3
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Mankoti M, Meena SS, Mohanty A. Exploring the potential of eco-friendly carbon dots in monitoring and remediation of environmental pollutants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:43492-43523. [PMID: 38713351 DOI: 10.1007/s11356-024-33448-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 04/19/2024] [Indexed: 05/08/2024]
Abstract
Photoluminescent carbon dots (CDs) have garnered significant interest owing to their distinctive optical and electronic properties. In contrast to semiconductor quantum dots, which incorporated toxic elements in their composition, CDs have emerged as a promising alternative, rendering them suitable for both environmental and biological applications. CDs exhibit astonishing features, including photoluminescence, charge transfer, quantum confinement effect, and biocompatibility. Recently, CDs derived from green sources have drawn a lot of attention due to their strong photostability, reduced toxicity, better biocompatibility, enhanced fluorescence, and simplicity. These attributes have shown great promise in the areas of LED technology, bioimaging, photocatalysis, drug delivery, biosensing, and antibacterial activity. In contrast, this review offers a comprehensive overview of various green sources utilized to produce CDs and methodologies, along with their merits and demerits, with a notable emphasis on physiochemical properties. Additionally, the paper provides insight into the bibliometric analysis and recent advancements of CDs in sensing, photocatalysis, and antibacterial activity. In this field, extensive research is underway, and a total of 7,438 articles have been identified. Among these, 4242 articles are dedicated to sensing applications, while 1518 and 1678 focus on adsorption and degradation. Carbon dots demonstrate exceptional sensing capabilities within the nanomolar range with a selectivity of up to 95% for pollutants. They exhibit excellent degradation efficiency exceeding 90% within 10-130 min and possess an adsorption capacity from 100 to 800 mg/g. These fascinating qualities render them suitable for diverse applications.
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Affiliation(s)
- Megha Mankoti
- Department of Biotechnology, Dr B R Ambedkar National Institute of Technology, Jalandhar, Punjab, India
| | - Sumer Singh Meena
- Department of Biotechnology, Dr B R Ambedkar National Institute of Technology, Jalandhar, Punjab, India
| | - Anee Mohanty
- Department of Biotechnology, Dr B R Ambedkar National Institute of Technology, Jalandhar, Punjab, India.
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4
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Nazar M, Hasan M, Wirjosentono B, Gani BA, Nada CE. Microwave Synthesis of Carbon Quantum Dots from Arabica Coffee Ground for Fluorescence Detection of Fe 3+, Pb 2+, and Cr 3. ACS OMEGA 2024; 9:20571-20581. [PMID: 38737012 PMCID: PMC11079894 DOI: 10.1021/acsomega.4c02254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 04/04/2024] [Accepted: 04/11/2024] [Indexed: 05/14/2024]
Abstract
In this study, carbon quantum dots (CQDs), which were synthesized from arabica coffee ground-derived activated carbon, have been successfully employed as a fluorescence sensor to detect Fe3+ ions. CQDs were fabricated using microwave heating for 5-10 min, which emitted vibrant blue light at 455 nm when exposed to excitation at 365 nm. Dynamic light scattering (DLS) analysis revealed that the average size of CQDs was 10.12 nm with a quantum yield of 6.01%. Fluorescence detection was developed for sensing Fe3+, Pb2+, and Cr3+ ions. The addition of the three metal ions resulted in a decrease in the fluorescence (FL) intensity of the CQDs, with the addition of Fe3+ ions demonstrating a more significant decrease in FL compared to the addition of both Cr3+ and Pb2+ ions. The results indicated that the CQDs synthesized from activated carbon of arabica coffee waste performed as a selective fluorescent detector for Fe3+ ions, with a detection limit of 0.27 μM.
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Affiliation(s)
- Muhammad Nazar
- Graduate
School of Mathematics and Applied Sciences, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia
- Department
of Chemistry Education, Universitas Syiah
Kuala, Kopelma Darussalam, Banda Aceh 23111, Indonesia
| | - Muhammad Hasan
- Department
of Chemistry Education, Universitas Syiah
Kuala, Kopelma Darussalam, Banda Aceh 23111, Indonesia
| | | | - Basri A. Gani
- Department
of Oral Biology, Dentistry Faculty, Universitas
Syiah Kuala, Darussalam, Banda Aceh 23111, Indonesia
| | - Cut Elvira Nada
- Department
of Chemistry Education, Universitas Syiah
Kuala, Kopelma Darussalam, Banda Aceh 23111, Indonesia
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5
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Shruti A, Bage N, Kar P. Nanomaterials based sensors for analysis of food safety. Food Chem 2024; 433:137284. [PMID: 37703589 DOI: 10.1016/j.foodchem.2023.137284] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 08/10/2023] [Accepted: 08/23/2023] [Indexed: 09/15/2023]
Abstract
The freshnessof the food is a major issue because spoiled food lacks critical nutrients for growth and could be harmful to human health if consumed directly. Nanomaterials are captivating due to their unique properties like large surface area, high selectivity, small dimension, great biocompatibility and conductivity, real-time onsite analysis, etc. which give them an advantage over conventional evaluation techniques. Despite these advantages of nanomaterials used in food safety and their preservation, food products can still get affected by various environmental factors (like pH, temperature, etc.), making the use of time-temperature indicators more condescending. This review is a comprehensive study on food safety, its causes, the responsible analytes, their remedies by various nanomaterials, the development of various nanosensors, and the various challenges faced in maintaining food safety standards to reduce the risk of contaminants.
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Affiliation(s)
- Asparshika Shruti
- Department of Chemistry, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, India
| | - Nirgaman Bage
- Department of Chemistry, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, India
| | - Pradip Kar
- Department of Chemistry, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, India.
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6
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Guo Y, Wang R, Wei C, Li Y, Fang T, Tao T. Carbon quantum dots for fluorescent detection of nitrite: A review. Food Chem 2023; 415:135749. [PMID: 36848836 DOI: 10.1016/j.foodchem.2023.135749] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 01/31/2023] [Accepted: 02/17/2023] [Indexed: 02/22/2023]
Abstract
NO2- is commonly found in foods and the environment, and excessive intake of NO2- poses serious hazards to human health. Thus, rapid and accurate assay of NO2- is of considerable significance. Traditional instrumental approaches for detection of NO2- faced with limitations of expensive instruments and complicated operations. Current gold standards for sensing NO2- are Griess assay and 2,3-diaminonaphthalene assay, which suffer from slow detection kinetics and bad water solubility. The newly emerged carbon quantum dots (CQDs) exhibit integrated merits including easy fabrication, low-cost, high quantum yield, excellent photostability, tunable emission behavior, good water solubility and low toxicity, which make CQDs be widely applied to fluorescent assay of NO2-. In this review, synthetic strategies of CQDs are briefly presented. Advances of CQDs for fluorescent detection of NO2- are systematically highlighted. Lastly, the challenges and perspectives in the field are discussed.
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Affiliation(s)
- Yongming Guo
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing 210044, China.
| | - Ruiqing Wang
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Chengwei Wei
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Yijin Li
- Reading Academy, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Tiancheng Fang
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Tao Tao
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing 210044, China.
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7
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Sun Y, Ma S, Wang H, Wang H, Gao M, Wang X. Construction of an "ON-OFF" fluoroprobe using ionic liquids-modified orange peel-based carbon quantum dots for selective/sensitive permanganate assay in waters and the underlying quenching mechanisms. Anal Bioanal Chem 2023:10.1007/s00216-023-04768-7. [PMID: 37286905 DOI: 10.1007/s00216-023-04768-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/22/2023] [Accepted: 05/18/2023] [Indexed: 06/09/2023]
Abstract
Herein, we fabricated blue-fluorescence carbon quantum dots modified by ionic liquids (ILs-CQDs) with a quantum yield of 18.13% by employing orange peel as a carbon source and [BMIM][H2PO4] as a dopant. The fluorescence intensities (FIs) of ILs-CQDs were significantly quenched upon the addition of MnO4- with excellent selectivity and sensitivity in waters, and this phenomenon provided a feasibility for constructing a sensitive "ON-OFF" fluoroprobe. The prominent overlapping between the maximum excitation/emission of ILs-CQDs and the UV-Vis absorption of MnO4- implied an inner filter effect (IFE). The higher Kq value demonstrated that the fluorescence-quenching phenomenon was a static-quenching process (SQE). Coordination between MnO4- and oxygen/amino-rich groups in ILs-CQDs resulted in the alteration of zeta potential in the fluorescence system. Consequently, the interactions between MnO4- and ILs-CQDs belong to a joint mechanism of IFE and SQE. When plotting the FIs of ILs-CQDs vs. the concentrations of MnO4-, a satisfactorily linear correlation was obtained across the range of 0.3-100 μM with a detectable limit of 0.09 μM. This fluoroprobe was successfully applied to detect MnO4- in environmental waters with satisfactory recoveries of 98.05-103.75% and relative standard deviations (RSDs) of 1.57-2.68%. Also, it gave more excellent performance metrics as compared to the Chinese standard indirect iodometry method and other previous approaches for MnO4- assay. Overall, these findings offer a new avenue to engineer/develop a highly efficient fluoroprobe based on the combination of ILs and biomass-derived CQDs for the rapid/sensitive detection of metal ions in environmental waters.
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Affiliation(s)
- Yue Sun
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Su Ma
- School of Chemistry and Life Science, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Hanyu Wang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Huili Wang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Ming Gao
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China.
| | - Xuedong Wang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China.
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8
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Anindya W, Wahyuni WT, Rafi M, Putra BR. Electrochemical Sensor Based on Graphene Oxide/PEDOT:PSS Composite Modified Glassy Carbon Electrode for Environmental Nitrite Detection. INT J ELECTROCHEM SC 2023. [DOI: 10.1016/j.ijoes.2023.100034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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9
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Green synthetic carbon quantum dots based on waste tobacco leaves and its application to detecting borax content in Flour and its Products. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.134959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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10
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Fan J, Kang L, Cheng X, Liu D, Zhang S. Biomass-Derived Carbon Dots and Their Sensing Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4473. [PMID: 36558326 PMCID: PMC9783293 DOI: 10.3390/nano12244473] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/12/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Carbon dots (CDs) can be widely used in the field of sensing because of its good water solubility, low toxicity, high fluorescence stability and excellent biocompatibility. It has become a popular trend to prepare high-value, inexpensive, renewable and environmentally friendly CDs sensors from biomass resources. This article reviewed the research progress of biomass-derived CDs as chemical, physical and biological sensors in recent years and studied their preparation processes and sensing abilities. Furthermore, the prospects and challenges of biomass-CDs sensors were discussed. This article is expected to provide inspirations for the design, preparation and application of biomass-CDs sensors in the future.
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Affiliation(s)
- Jiang Fan
- Department of Chemical Engineering, Textile and Clothing, Shaanxi Polytechnic Institute, Xianyang 712000, China
| | - Lei Kang
- School of Surveying & Testing, Shaanxi Railway Institute, Weinan 714000, China
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Xu Cheng
- Department of Chemical Engineering, Textile and Clothing, Shaanxi Polytechnic Institute, Xianyang 712000, China
| | - Di Liu
- Department of Chemical Engineering, Textile and Clothing, Shaanxi Polytechnic Institute, Xianyang 712000, China
| | - Sufeng Zhang
- Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, Shaanxi University of Science and Technology, Xi'an 710021, China
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11
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Kanwal A, Bibi N, Hyder S, Muhammad A, Ren H, Liu J, Lei Z. Recent advances in green carbon dots (2015-2022): synthesis, metal ion sensing, and biological applications. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2022; 13:1068-1107. [PMID: 36262178 PMCID: PMC9551278 DOI: 10.3762/bjnano.13.93] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 09/14/2022] [Indexed: 06/08/2023]
Abstract
Carbon dots (CDs) show extensive potential in various fields such as sensing, bioimaging, catalysis, medicine, optoelectronics, and drug delivery due to their unique properties, that is, low cytotoxicity, cytocompatibility, water-solubility, multicolor wavelength tuned emission, photo-stability, easy modification, strong chemical inertness, etc. This review article especially focuses on the recent advancement (2015-2022) in the green synthesis of CDs, their application in metal ions sensing and microbial bioimaging, detection, and viability studies as well as their applications in pathogenic control and plant growth promotion.
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Affiliation(s)
- Aisha Kanwal
- Key Laboratory of Applied Surface and Colloid Chemistry, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an, 710119, China
| | - Naheed Bibi
- Department of Chemistry, Shaheed Benazir Bhutto Women University, Charsadda Road, Larama, Peshawar, Pakistan
| | - Sajjad Hyder
- Department of Botany, Government College Women University, Sialkot, Pakistan
| | - Arif Muhammad
- Key Laboratory of Applied Surface and Colloid Chemistry, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an, 710119, China
| | - Hao Ren
- Key Laboratory of Applied Surface and Colloid Chemistry, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an, 710119, China
| | - Jiangtao Liu
- College of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang, 712046, China
| | - Zhongli Lei
- Key Laboratory of Applied Surface and Colloid Chemistry, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an, 710119, China
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12
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Tao H, Zhang Z, Cao Q, Li L, Xu S, Jiang C, Li Y, Liu Y. Ratiometric fluorescent sensors for nitrite detection in the environment based on carbon dot/Rhodamine B systems. RSC Adv 2022; 12:12655-12662. [PMID: 35480346 PMCID: PMC9039988 DOI: 10.1039/d2ra00973k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 04/14/2022] [Indexed: 11/21/2022] Open
Abstract
A novel carbon dot/Rhodamine B-based ratiometric fluorescent probe was developed for a highly sensitivity and selective detection of nitrite (NO2−). The probe showed colour changes from blue to orange under ultraviolet light in response to NO2− with a detection limit as low as 67 nM in the range of 0 to 40 μM. A ratiometric fluorescent test paper was successfully prepared using the probe solution, which demonstrated its feasibility towards a rapid and semi-quantitative detection of NO2− in real samples. A visual ratiometric fluorescent sensor based on blue carbon dot/Rhodamine B is used to selectively detect NO2− in the environment.![]()
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Affiliation(s)
- Huihui Tao
- School of Resources and Environmental Engineering, Anhui University Hefei 230601 Anhui Province P. R. China .,Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences Hefei 230031 P. R. China
| | - Zhao Zhang
- School of Resources and Environmental Engineering, Anhui University Hefei 230601 Anhui Province P. R. China .,Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences Hefei 230031 P. R. China
| | - Qiao Cao
- Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences Hefei 230031 P. R. China
| | - Lingfei Li
- Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences Hefei 230031 P. R. China
| | - Shihao Xu
- Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences Hefei 230031 P. R. China
| | - Changlong Jiang
- Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences Hefei 230031 P. R. China
| | - Yucheng Li
- School of Resources and Environmental Engineering, Anhui University Hefei 230601 Anhui Province P. R. China
| | - Yingying Liu
- Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences Hefei 230031 P. R. China
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