1
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Yang H, Han C, Jiang J, Li P, Chen L. High-purity C 3N quantum dots for enhancing fluorescence detection of metal ions. RSC Adv 2024; 14:10749-10754. [PMID: 38567340 PMCID: PMC10986775 DOI: 10.1039/d4ra00887a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Accepted: 03/26/2024] [Indexed: 04/04/2024] Open
Abstract
A new type of two-dimensional layered material, namely C3N, has been fabricated by polymerization and recommended to have great potential in various applications such as the development of electronic devices or photo-detectors, due to its enhanced conductivity, electronegativity, and unique optical properties. Actually, most of the present research on C3N is limited in the scope of theoretical calculation, while experimental research is blocked by inefficient synthesis with low purity and homogeneity. Here, we report an optimized efficient synthesis method of high-purity C3N QDs in aqueous solution by polymerization of DAP with combined centrifugation and filtration of products, with the synthesis yield up to 33.1 ± 3.1%. Subsequently, the C3N QDs have been used as novel metal ion probes exhibiting a sensitive fluorescent response to various metal ions including monovalent alkaline metals (Li+, Na+, and K+), divalent alkaline-earth metals (Mg2+, Ca2+, and Sr2+), and multivalent transition metals (Cu2+, Co2+, Ni2+, and Au3+, Fe3+, Cr3+) due to the high electronegativity of the C3N surface. Particularly, the fluorescent quenching response of Al3+, Ga3+, In3+, and Sc3+ ions is significantly different from the fluorescent enhanced response of most other carbon-based QDs, which is promising for enriching the detection methods of these metal ions and beneficial to improve the accuracy of ion recognition.
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Affiliation(s)
- Huan Yang
- School of Physical Science and Technology, Ningbo University Ningbo 315211 China
- State Key Laboratory of Surface Physics, Department of Physics, Fudan University Shanghai 200433 China
| | - Changdao Han
- Department of Optical Engineering, College of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University Hangzhou 311300 China
| | - Jie Jiang
- School of Physical Science and Technology, Ningbo University Ningbo 315211 China
| | - Pei Li
- School of Physical Science and Technology, Ningbo University Ningbo 315211 China
- State Key Laboratory of Surface Physics, Department of Physics, Fudan University Shanghai 200433 China
| | - Liang Chen
- School of Physical Science and Technology, Ningbo University Ningbo 315211 China
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2
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Al-Anazi M. Gold versus platinum for chemical modification of carbon quantum dots from carboxymethyl cellulose: Tunable biomedical performance. Int J Biol Macromol 2024; 261:129830. [PMID: 38296138 DOI: 10.1016/j.ijbiomac.2024.129830] [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: 12/02/2023] [Revised: 01/22/2024] [Accepted: 01/27/2024] [Indexed: 02/05/2024]
Abstract
Urgent requirements for medication from chronic inflammation and cancer are considerably interested, while, the recent reports were considered with investigating simple methods for synthesis. Metal-modified carbon quantum dots ("M-CQDs") were successfully ingrained from carboxymethyl cellulose under the assistance of infra-red irradiation. The current approach demonstrates a study for the effect of structural tuning for biomedical performance of CQDs via modifying of CQDs with either gold (Au-CQDs) or platinum (Pt-CQDs). Successive nucleation of Au-CQDs and Pt-CQDs was confirmed via different instrumental analyses like, TEM micrographs, Zeta potential, XRD, FTIR, 1HNMR& 13CNMR spectra. The data reveal that, modification of CQDs (8.7 nm) with gold was reflected in insignificant effect on the mean size of CQDs (8.9 nm), whereas, doping of platinum resulted in slight enlargement of the size (12.4 nm). However, Pt-CQDs were exhibited with the highest anti-inflammatory (cell viability percent 78 %) and antimicrobial action. On the other hand, Au-CQDs were shown with the highest anticancer affinity (reduction of cell viability 83 %) compared to the others. The current study approved the superiority of CQDs modified with either gold or platinum to be successfully applicable as potential therapeutic reagents for the treatment of either cancer or inflammation diseases.
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Affiliation(s)
- Menier Al-Anazi
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia.
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3
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Bao H, Liu Y, Li H, Qi W, Sun K. Luminescence of carbon quantum dots and their application in biochemistry. Heliyon 2023; 9:e20317. [PMID: 37790961 PMCID: PMC10543222 DOI: 10.1016/j.heliyon.2023.e20317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 08/17/2023] [Accepted: 09/19/2023] [Indexed: 10/05/2023] Open
Abstract
Similar to fullerenes, carbon nanotubes and graphene, carbon dots (CDs) are causing a lot of research work in their own right. CDs are a type of surface-passivated quantum dot that contain carbon atoms. Their distinctive characteristics, such as luminescent emission that varies with size and wavelength, resistance to photobleaching, easy biological binding, lack of toxicity, and economical production without the need for intricate synthetic processes, have led to a noteworthy surge in attention within the research community. Different techniques can be utilized to create these CDs, spanning from basic candle burning to laser ablation. This review article delves into the principles of fluorescence technology, providing insights into how different synthesis methods of quantum dots impact their luminescent properties. Additionally, it highlights the latest applications of quantum dots in catalysis and biomedical fields, with special emphasis on the current status of luminescent properties in biology and chemistry. Towards the end, the article discusses the limitations of quantum dots in current practical applications, pointing out that CDs hold promising potential for future applications.
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Affiliation(s)
- Haili Bao
- Department of General Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - Yihao Liu
- Department of General Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - He Li
- Beijing University of Chemical Technology, Beijing, China
| | - Wenxin Qi
- School of Life Sciences, Shanghai University, Shanghai, China
| | - Keyan Sun
- Department of General Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
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4
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Le N, Kim K. Current Advances in the Biomedical Applications of Quantum Dots: Promises and Challenges. Int J Mol Sci 2023; 24:12682. [PMID: 37628860 PMCID: PMC10454335 DOI: 10.3390/ijms241612682] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/07/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023] Open
Abstract
Quantum dots (QDs) are a type of nanoparticle with exceptional photobleaching-resistant fluorescence. They are highly sought after for their potential use in various optical-based biomedical applications. However, there are still concerns regarding the use of quantum dots. As such, much effort has been invested into understanding the mechanisms behind the behaviors of QDs, so as to develop safer and more biocompatible quantum dots. In this mini-review, we provide an update on the recent advancements regarding the use of QDs in various biomedical applications. In addition, we also discuss# the current challenges and limitations in the use of QDs and propose a few areas of interest for future research.
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Affiliation(s)
| | - Kyoungtae Kim
- Department of Biology, Missouri State University, 901 S National, Springfield, MO 65897, USA;
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5
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Sun F, Ghosh H, Tan Z, Sivoththaman S. Top-down synthesis and enhancing device adaptability of graphene quantum dots. NANOTECHNOLOGY 2023; 34:185601. [PMID: 36724506 DOI: 10.1088/1361-6528/acb7fb] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
Quantum dots (QD) are rapidly making their way into several application sectors including optoelectronics, and there is a strong need to focus on non-toxic QDs. In this work, we have synthesized graphene QDs in the size range of 1.4-4.2 nm from inexpensive graphite by oxidative cleavage using a sulphuric and nitric acid mixture. A subsequent hydrogen peroxide oxidation step, investigated using two thermal budgets, has resulted in QDs with excellent photoluminescence (PL) intensity. Prolonged, higher temperature oxidation results in smaller size GQDs. X-ray photoelectron spectroscopy analysis confirmed the role of ·OH radicals in the oxidation process and Raman analysis revealed that the higher thermal budget oxidation results in lower defect density. To overcome the challenges in device adaptability due to the inherent acidity in the QDs, a post-synthesis neutralization process was devised. The neutralized GQDs were formed into a film to be used as the active layer in a photodetector device. Fluorescence decay analysis showed there is no significant change in lifetime because of the film formation process. The fabricated GQD photodetector device exhibited high photocurrent under ultraviolet illumination with an ON/OFF ratio of 400% at an applied bias of ±1 V. The device performance underlines the high potential for the non-toxic, top-down synthesized GQDs for application in optoelectronic devices.
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Affiliation(s)
- Fangyan Sun
- Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Canada
| | - Hrilina Ghosh
- Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Canada
| | - Zhongchao Tan
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Canada
| | - Siva Sivoththaman
- Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Canada
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6
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Tran HM, Nguyen NT, Nguyen XT, Nguyen DT, Giang TPL, Tran TQ. Synthesis and characterization of N-doped graphene oxide quantum dots/Fe-BDC composite for methylene blue decomposition. CHEM ENG COMMUN 2022. [DOI: 10.1080/00986445.2022.2116322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Hong Minh Tran
- School of Chemical Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam
| | - Ngoc Tue Nguyen
- School of Chemical Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam
| | - Xuan Truong Nguyen
- School of Chemical Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam
| | - Duc-Trung Nguyen
- School of Chemical Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam
| | - Thi Phuong Ly Giang
- School of Chemical Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam
| | - Thuong Quang Tran
- School of Chemical Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam
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7
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Folic Acid-Modified Cerium-Doped Carbon Dots as Photoluminescence Sensors for Cancer Cells Identification and Fe(III) Detection. CHEMOSENSORS 2022. [DOI: 10.3390/chemosensors10060219] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Carbon dots (CDs) are a new class of carbon-based luminescence materials with fascinating properties. They have been given great expectations on superseding traditional semiconductor quantum dots due to their good dispersity and stability, relatively low toxicity, superior resistance to photobleaching, and excellent biocompatibility. The diversified luminescence properties of CDs are largely due to the synthetic strategies and precursors. In view of those described above, this study has explored the possibility to establish a facile one-step hydrothermal method for the one-pot synthesis of folic acid-modified cerium-doped CDs (Ce-CDs-FA), which could be further utilized as a sensitive fluorescent nanoprobe for biosensing. This investigation demonstrates that the Ce-CDs-FA nanocomposites have nice biocompatibility and bright fluorescent properties, which can be readily utilized to detect cancer cells through recognizing overexpressing folate receptors by virtue of folic acid. Meanwhile, it is noted that the Fe3+ ion can actualize a specific and hypersensitive quenching effect for these Ce-CDs-FA nanocomposites, which can be further explored for special ion recognition, including iron ions. It raises the possibility that the as-prepared Ce-CDs-FA nanocomposites could be extended as a dual fluorescence sensor for targeted cell imaging and Fe3+ ion detection.
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8
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Dutra LV, de Oliveira Fontoura CR, da Cruz JC, Nascimento MA, de Oliveira AF, Lopes RP. Green Synthesis Optimization of Graphene Quantum Dots by Dohelert Design For Dye Photodegradation Application. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129442] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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9
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Kansara V, Tiwari S, Patel M. Graphene quantum dots: A review on the effect of synthesis parameters and theranostic applications. Colloids Surf B Biointerfaces 2022; 217:112605. [PMID: 35688109 DOI: 10.1016/j.colsurfb.2022.112605] [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: 02/21/2022] [Revised: 05/23/2022] [Accepted: 05/25/2022] [Indexed: 10/18/2022]
Abstract
The rising demand for early-stage diagnosis of diseases such as cancer, diabetes, neurodegenerative can be met with the development of materials offering high sensitivity and specificity. Graphene quantum dots (GQDs) have been investigated extensively for theranostic applications owing to their superior photostability and high aqueous dispersibility. These are attractive for a range of biomedical applications as their physicochemical and optoelectronic properties can be tuned precisely. However, many aspects of these properties remain to be explored. In the present review, we have discussed the effect of synthetic parameters upon their physicochemical characteristics relevant to bioimaging. We have highlighted the effect of particle properties upon sensing of biological molecules through 'turn-on' and 'turn-off' fluorescence and generation of electrochemical signals. After describing the effect of surface chemistry and solution pH on optical properties, an inclusive view on application of GQDs in drug delivery and radiation therapy has been given. Finally, a brief overview on their application in gene therapy has also been included.
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Affiliation(s)
- Vrushti Kansara
- Maliba Pharmacy College, Uka Tarsadia University, Gujarat, India
| | - Sanjay Tiwari
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Raebareli, Uttar Pradesh, India
| | - Mitali Patel
- Maliba Pharmacy College, Uka Tarsadia University, Gujarat, India.
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10
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Cui P, Xue Y. Edge-oxidation induced non-radiative recombination dynamics in graphene quantum dots: a theoretical insight from Fermi’s golden rule. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2025465] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Peng Cui
- Nanotechnology research laboratory, Jiangnan University, Wuxi, People’s Republic of China
| | - Yuan Xue
- Nanotechnology research laboratory, Jiangnan University, Wuxi, People’s Republic of China
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11
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Principles and Biomedical Application of Graphene Family Nanomaterials. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1351:3-22. [DOI: 10.1007/978-981-16-4923-3_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Zacharias M, Kelires PC. Quantum Confinement of Electron-Phonon Coupling in Graphene Quantum Dots. J Phys Chem Lett 2021; 12:9940-9946. [PMID: 34614351 DOI: 10.1021/acs.jpclett.1c02899] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
On the basis of first-principles calculations and the special displacement method, we demonstrate the quantum confinement scaling law of the phonon-induced gap renormalization of graphene quantum dots (GQDs). We employ zigzag-edged GQDs with hydrogen passivation and embedded in hexagonal boron nitride. Our calculations for GQDs in the sub-10 nm region reveal strong quantum confinement of the zero-point renormalization ranging from 20 to 250 meV. To obtain these values we introduce a correction to the Allen-Heine theory of temperature-dependent energy levels that arises from the phonon-induced splitting of 2-fold degenerate edge states. This correction amounts to more than 50% of the gap renormalization. We also present momentum-resolved spectral functions of GQDs, which are not reported in previous contributions. Our results lay the foundation to systematically engineer temperature-dependent electronic structures of GQDs for applications in solar cells, electronic transport, and quantum computing devices.
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Affiliation(s)
- Marios Zacharias
- Research Unit for Nanostructured Materials Systems, Cyprus University of Technology, P.O. Box 50329, 3603 Limassol, Cyprus
- Department of Mechanical and Materials Science Engineering, Cyprus University of Technology, P.O. Box 50329, 3603 Limassol, Cyprus
| | - Pantelis C Kelires
- Research Unit for Nanostructured Materials Systems, Cyprus University of Technology, P.O. Box 50329, 3603 Limassol, Cyprus
- Department of Mechanical and Materials Science Engineering, Cyprus University of Technology, P.O. Box 50329, 3603 Limassol, Cyprus
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13
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Sohal N, Maity B, Basu S. Recent advances in heteroatom-doped graphene quantum dots for sensing applications. RSC Adv 2021; 11:25586-25615. [PMID: 35478909 PMCID: PMC9037181 DOI: 10.1039/d1ra04248c] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 07/19/2021] [Indexed: 12/16/2022] Open
Abstract
Graphene quantum dots (GQDs) are carbon-based fluorescent nanomaterials having various applications due to attractive properties. But the low photoluminescence (PL) yield and monochromatic PL behavior of GQDs put limitations on their real-time applications. Therefore, heteroatom doping of GQDs is recognized as the best approach to modify the optical as well as electronic properties of GQDs by modifying their chemical composition and electronic structure. In this review, the new strategies for preparing the heteroatom (N, B, S, P) doped GQDs by using different precursors and methods are discussed in detail. The particle size, emission wavelength, PL emissive color, and quantum yield of recently developed heteroatom doped GQDs are reported in this article. The investigation of structure, crystalline nature, and composition of heteroatom doped GQDs by various characterization techniques such as high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) are also described. The recent progress on the impact of mono or co-doping of heteroatoms on PL behavior, and optical, electrochemiluminescence (ECL), and electrochemical properties of GQDs is also surveyed. Further, heteroatom doped GQDs with attractive properties used in sensing of various metal ions, biomolecules, small organic molecules, etc. by using various techniques with different limits of detection are also summarized. This review provides progressive trends in the development of heteroatom doped GQDs and their various applications.
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Affiliation(s)
- Neeraj Sohal
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology Patiala 147004 India
| | - Banibrata Maity
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology Patiala 147004 India
| | - Soumen Basu
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology Patiala 147004 India
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14
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Liu Z, Li F, Luo Y, Li M, Hu G, Pu X, Tang T, Wen J, Li X, Li W. Size Effect of Graphene Quantum Dots on Photoluminescence. Molecules 2021; 26:3922. [PMID: 34206960 PMCID: PMC8271461 DOI: 10.3390/molecules26133922] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/20/2021] [Accepted: 06/23/2021] [Indexed: 11/26/2022] Open
Abstract
High-photoluminescence (PL) graphene quantum dots (GQDs) were synthesized by a simple one-pot hydrothermal process, then separated by dialysis bags of different molecular weights. Four separated GQDs of varying sizes were obtained and displayed different PL intensities. With the decreasing size of separated GQDs, the intensity of the emission peak becomes much stronger. Finally, the GQDs of the smallest size revealed the most energetic PL intensity in four separated GQDs. The PL energy of all the separated GQDs shifted slightly, supported by density functional theory calculations.
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Affiliation(s)
- Ziyi Liu
- College of Science, Guilin University of Technology, Guilin 541004, China; (Z.L.); (F.L.); (Y.L.); (G.H.); (T.T.); (J.W.); (X.L.)
| | - Fei Li
- College of Science, Guilin University of Technology, Guilin 541004, China; (Z.L.); (F.L.); (Y.L.); (G.H.); (T.T.); (J.W.); (X.L.)
| | - Yi Luo
- College of Science, Guilin University of Technology, Guilin 541004, China; (Z.L.); (F.L.); (Y.L.); (G.H.); (T.T.); (J.W.); (X.L.)
| | - Ming Li
- College of Science, Guilin University of Technology, Guilin 541004, China; (Z.L.); (F.L.); (Y.L.); (G.H.); (T.T.); (J.W.); (X.L.)
| | - Guanghui Hu
- College of Science, Guilin University of Technology, Guilin 541004, China; (Z.L.); (F.L.); (Y.L.); (G.H.); (T.T.); (J.W.); (X.L.)
| | - Xianjuan Pu
- Shanghai Applied Radiation Institute, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Tao Tang
- College of Science, Guilin University of Technology, Guilin 541004, China; (Z.L.); (F.L.); (Y.L.); (G.H.); (T.T.); (J.W.); (X.L.)
| | - Jianfeng Wen
- College of Science, Guilin University of Technology, Guilin 541004, China; (Z.L.); (F.L.); (Y.L.); (G.H.); (T.T.); (J.W.); (X.L.)
| | - Xinyu Li
- College of Science, Guilin University of Technology, Guilin 541004, China; (Z.L.); (F.L.); (Y.L.); (G.H.); (T.T.); (J.W.); (X.L.)
| | - Weitao Li
- Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, China
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15
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Zhu Y, Yan L, Xu M, Li Y, Song X, Yin L. Difference between ammonia and urea on nitrogen doping of graphene quantum dots. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125703] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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16
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Abstract
Nanographenes (NGs) have recently emerged as new carbon materials. Their nanoscale size results in a size-dependent quantum confinement effect, opening the band gap by a few eV. This energy gap allows NGs to be applied as optical materials. This property has attracted researchers across multiple scientific fields. The photophysical properties of NGs can be manipulated by introducing organic groups onto their basal planes and/or into their edges. In addition, the integration of organic functional groups into NGs results in NG-based hybrid materials. These features make the post-synthetic modification of NGs an active research area. As obtainable information on chemically functionalized NGs is limited owing to their nonstoichiometry and structural uncertainty, their structural characterization requires a combination of multiple spectroscopic methods. Therefore, information on the characterization procedures of recently published chemically functionalized NGs is of value for advancing the field of NG-based hybrid materials. The present review focuses on the structural characterization of chemically functionalized NGs. It is hoped that this review will help to advance this field.
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Affiliation(s)
- Ryo Sekiya
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8526, Japan
| | - Takeharu Haino
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8526, Japan
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17
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Yang M, Lian Z, Si C, Li B. Revealing the role of nitrogen dopants in tuning the electronic and optical properties of graphene quantum dots via a TD-DFT study. Phys Chem Chem Phys 2020; 22:28230-28237. [PMID: 33295343 DOI: 10.1039/d0cp04707d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Graphene quantum dots (GQDs) have been suggested to have a wide range of applications due to their unique electronic and optical properties. Moreover, heteroatom doping has become a viable way to fine-tune the properties of GQDs. However, the working principle of the doping strategy is still not conclusive. In this study, the effects of size, configuration of the nitrogen dopant, and N/C ratio on the electronic and optical properties of GQDs have been carefully examined. First, the variation of the adsorption wavelength of pristine GQDs was evaluated for which a linear relation is established against different diameters. Moreover, it is found that both the configuration and content of nitrogen dopants have a significant impact on the adsorption wavelength and band gap of GQDs. In particular, different nitrogen species could have exactly opposite effects on the adsorption behavior. The origin of the nitrogen doping effect is calibrated from orbital localization, charge analysis, natural transition orbitals, and atomic contribution towards excitation. It is noted that nitrogen doping can simultaneously reduce both light adsorption energy and emission energy compared with the pristine one. This study provides an insightful explanation for the electronic and optical properties of GQDs and consolidates the theory base of the doping strategy.
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Affiliation(s)
- Min Yang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, People's Republic of China.
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18
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Zhao C, Song X, Liu Y, Fu Y, Ye L, Wang N, Wang F, Li L, Mohammadniaei M, Zhang M, Zhang Q, Liu J. Synthesis of graphene quantum dots and their applications in drug delivery. J Nanobiotechnology 2020; 18:142. [PMID: 33008457 PMCID: PMC7532648 DOI: 10.1186/s12951-020-00698-z] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 09/24/2020] [Indexed: 12/23/2022] Open
Abstract
This review focuses on the recent advances in the synthesis of graphene quantum dots (GQDs) and their applications in drug delivery. To give a brief understanding about the preparation of GQDs, recent advances in methods of GQDs synthesis are first presented. Afterwards, various drug delivery-release modes of GQDs-based drug delivery systems such as EPR-pH delivery-release mode, ligand-pH delivery-release mode, EPR-Photothermal delivery-Release mode, and Core/Shell-photothermal/magnetic thermal delivery-release mode are reviewed. Finally, the current challenges and the prospective application of GQDs in drug delivery are discussed.
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Affiliation(s)
- Changhong Zhao
- School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, 453003, P. R. China.
- Electronics Materials and Systems Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, 412 96, Gothenburg, Sweden.
| | - Xuebin Song
- School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, 453003, P. R. China
| | - Ya Liu
- Electronics Materials and Systems Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, 412 96, Gothenburg, Sweden
| | - Yifeng Fu
- Electronics Materials and Systems Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, 412 96, Gothenburg, Sweden
| | - Lilei Ye
- SHT Smart High-Tech AB, 411 33, Gothenburg, Sweden
| | - Nan Wang
- SHT Smart High-Tech AB, 411 33, Gothenburg, Sweden
| | - Fan Wang
- School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, 453003, P. R. China
| | - Lu Li
- School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, 453003, P. R. China
| | - Mohsen Mohammadniaei
- Department of Health Technology, Technical University of Denmark, 2800, Kongens Lyngby, Denmark
| | - Ming Zhang
- Department of Health Technology, Technical University of Denmark, 2800, Kongens Lyngby, Denmark
| | - Qiqing Zhang
- School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, 453003, P. R. China.
| | - Johan Liu
- Electronics Materials and Systems Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, 412 96, Gothenburg, Sweden.
- School of Automation and Mechanical Engineering, SMIT Center, Shanghai University, No 20, Chengzhong Road, Box 808, ShanghaiShanghai, 201800, China.
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19
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Tran HL, Darmanto W, Doong RA. Ultrasensitive Detection of Tetracycline Using Boron and Nitrogen Co-Doped Graphene Quantum Dots from Natural Carbon Source as the Paper-Based Nanosensing Probe in Difference Matrices. NANOMATERIALS 2020; 10:nano10091883. [PMID: 32962289 PMCID: PMC7558855 DOI: 10.3390/nano10091883] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/10/2020] [Accepted: 09/16/2020] [Indexed: 02/07/2023]
Abstract
Herein, the boron and nitrogen co-doped 0-dimensional graphene quantum dots (B,N-GQDs) with high quantum yield (QY) were synthesized via microwave-assisted hydrothermal method at 170 °C for 20 min using fresh passion fruit juice and boric acid as the starting materials. The 3–6 layers of B,N-GQDs with mean particle size of 9 ± 1 nm were then used for ultra-sensitive and selective detection of tetracycline in aqueous and biological media. The hybridization of boron and nitrogen atoms into the GQD structures increases the intensity of electronegative, resulting in the enhancement of QY to 50 ± 1%. The B,N-GQDs show their excellent analytical performance on tetracycline determination after 2 min of reaction under an optimal condition at pH 5. The linear range of 0.04–70 µM and with limits of detection (LOD) of 1 nM in phosphate buffer saline (PBS), 1.9 nM in urine and 2.2 nM in human serum are obtained. Moreover, the high selectivity of tetracycline by B,N-GQDs over the other 23 interferences is observed. The π-π interaction and electron donor-acceptor principle play pivotal roles in enhancing the ultra-sensitivity and selectivity of B,N-GQDs toward TC detection. Moreover, the B, N-GQD based paper nanosensor exhibits an excellent analytical performance on visual detection of 0.1–30 µM TC in human serum. Results of this study clearly indicate the feasibility of synthesis of B,N-GQDs derived from passion fruit juice for ultrasensitive tetracycline detection, which can open an avenue to use natural products for the preparation of environmentally benign and biocompatible carbon nanomaterials for highly sensitive detection of drugs, antibiotics, organic compounds and biomarkers.
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Affiliation(s)
- Hai Linh Tran
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, 101, Sec. 2, Kuang Fu Road, Hsinchu 30013, Taiwan;
| | - Win Darmanto
- Department of Biology, Faculty of Science and Technology, Airlangga University, Surabaya 60115, Indonesia;
| | - Ruey-An Doong
- Department of Biology, Faculty of Science and Technology, Airlangga University, Surabaya 60115, Indonesia;
- Institute of Analytical and Environmental Science, National Tsing Hua University, 101, Sec. 2, Kuang Fu Road, Hsinchu 30013, Taiwan
- Correspondence:
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20
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Khan ZG, Patil PO. A comprehensive review on carbon dots and graphene quantum dots based fluorescent sensor for biothiols. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105011] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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21
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Sekiya R, Haino T. Chemically Functionalized Two-Dimensional Carbon Materials. Chem Asian J 2020; 15:2316-2328. [PMID: 32128984 DOI: 10.1002/asia.202000196] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Indexed: 12/13/2022]
Abstract
Nanographenes (NGs), also known as graphene quantum dots, have recently been developed as nanoscale graphene fragments. These nanocarbon species can be excited with UV light and emit light from the UV-to-visible region. This photoemission has received great attraction across multiple scientific fields. NGs can be produced by cutting off carbon sources or fusing small organic molecules to grow graphitic structures. Furthermore, the organic synthesis of NGs has been intensely studied. Recently, the number of research papers on postsynthetic modification of NGs has gradually increased. Installed organic groups can tune the properties of NGs and provide new functionalities, opening the door for the development of sophisticated carbon-based functional materials. This review sheds light on recent progress in the postsynthetic modification of NGs and provides a brief summary of their production methods.
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Affiliation(s)
- Ryo Sekiya
- Department of Chemistry Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1, Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8526, Japan
| | - Takeharu Haino
- Department of Chemistry Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1, Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8526, Japan
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22
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Li X, Xie H, Luo G, Niu Y, Li X, Xi Y, Xiong Y, Chen Y, Sun W. Electrochemistry and Electrocatalysis of Hemoglobin Based on Graphene Quantum Dots Modified Electrode. CURR ANAL CHEM 2020. [DOI: 10.2174/1573411015666181128144712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Graphene quantum dots (GQD) is a new member of carbon nanomaterial
that has attracted increasing attention owing to its better chemical inertness, low cytotoxicity, large
specific surface area, cheap cost, suitable conductivity and excellent biocompatibility.
Methods:
Electrochemical behaviors of this modified electrode were studied by cyclic voltammetry
and electrochemical impedance spectroscopy. Electrochemical investigations of Nafion/Hb/GQD/
CILE were carried out with electrochemical parameters calculated.
Results:
In the phosphate buffer solution with a pH value of 5.0, good linear relationships between
the catalytic reduction current and the concentration of substrate were got for TCA (6.0~100.0
mmol·L-1), NaNO2 (2.0~12.0 mmol·L-1) and H2O2 (6.0~30.0 mmol·L-1). The proposed method was
applied to NaNO2 concentration detection in soak water from picked vegetables with satisfactory results.
Conclusion:
This Nafion/Hb/GQD/CILE had a good bioelectrocatalytic activity to different substrates
such as trichloroacetic acid, NaNO2 and H2O2 reduction with the advantages including wide
detection range, low detection limit and good stability. Therefore, the application of GQD in electrochemical
sensor was extended in this paper.
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Affiliation(s)
- Xiaoyan Li
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
| | - Hui Xie
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
| | - Guiling Luo
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
| | - Yanyan Niu
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
| | - Xiaobao Li
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
| | - Yaru Xi
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
| | - Yi Xiong
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
| | - Yong Chen
- Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Resources, College of Materials and Chemical Engineering, Hainan University, Haikou 570228, China
| | - Wei Sun
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
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23
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Tade RS, Nangare SN, Patil AG, Pandey A, Deshmukh PK, Patil DR, Agrawal TN, Mutalik S, Patil AM, More MP, Bari SB, Patil PO. Recent Advancement in Bio-precursor derived graphene quantum dots: Synthesis, Characterization and Toxicological Perspective. NANOTECHNOLOGY 2020; 31:292001. [PMID: 32176876 DOI: 10.1088/1361-6528/ab803e] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Graphene quantum dots (GQDs), impressive materials with enormous future potential, are reviewed from their inception, including different precursors. Considering the increasing burden of industrial and ecological bio-waste, there is an urgency to develop techniques which will convert biowaste into active moieties of interest. Amongst the various materials explored, we selectively highlight the use of potential carbon containing bioprecursors (e.g. plant-based, amino acids, carbohydrates), and industrial waste and its conversion into GQDs with negligible use of chemicals. This review focuses on the effects of different processing parameters that affect the properties of GQDs, including the surface functionalization, paradigmatic characterization, toxicity and biocompatibility issues of bioprecursor derived GQDs. This review also examines current challenges and s the ongoing exploration of potential bioprecursors for ecofriendly GQD synthesis for future applications. This review sheds further light on the electronic and optical properties of GQDs along with the effects of doping on the same. This review may aid in future design approaches and applications of GQDs in the biomedical and materials design fields.
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Affiliation(s)
- Rahul S Tade
- H R Patel Institute of Pharmaceutical Education and Research, Shirpur, Maharashtra 425405, India
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24
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Wang W, Xu S, Li N, Huang Z, Su B, Chen X. Sulfur and phosphorus co-doped graphene quantum dots for fluorescent monitoring of nitrite in pickles. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 221:117211. [PMID: 31158765 DOI: 10.1016/j.saa.2019.117211] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 05/05/2019] [Accepted: 05/26/2019] [Indexed: 06/09/2023]
Abstract
Doping graphene quantum dots (GQDs) with heteroatoms can change their band gap and electronic density, thus enhancing their fluorescence quantum yield (QY). In this work, we for the first time reported a nontoxic, rapid, and one-pot hydrothermal method to synthesize sulfur and phosphorus co-doped GQDs (S, P-GQDs). Citric acid was functioned as a carbon source, whereas sodium phytate and anhydrous sodium sulfate are used as the P and S sources, respectively, in this bottom-up synthesis. The resulting S, P-GQDs exhibit high heteroatomic doping ratios of 9.66 at.% for S and 3.34 at.% for P, and higher QY than those obtained from monoatomic doped GQDs. Additionally, the as-prepared S, P-GQDs exhibit excitation-dependent behavior, pH sensitivity between 8.0 and 13.0, high tolerance of ionic strength. More importantly, the as-synthesized S, P-GQDs show a sensitive and selective behavior for sensing nitrite (NO2-) in the concentration range of 0.7-9 μmol/L, and the detection limit was as low as 0.3 μmol/L. Additionally, the S, P-GQDs was successfully used in detecting NO2- in pickled foods, showing their promise for potential applications in realistic analysis.
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Affiliation(s)
- Weijie Wang
- College of Food and Biological Engineering, Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Jimei University, Xiamen 361021, China
| | - Shifen Xu
- College of Food and Biological Engineering, Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Jimei University, Xiamen 361021, China
| | - Ning Li
- College of Food and Biological Engineering, Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Jimei University, Xiamen 361021, China
| | - Zhiyong Huang
- College of Food and Biological Engineering, Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Jimei University, Xiamen 361021, China
| | - Bingyuan Su
- Xiamen Center for Disease Control and Prevention, Xiamen 361021, China
| | - Xiaomei Chen
- College of Food and Biological Engineering, Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Jimei University, Xiamen 361021, China.
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25
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Liu W, Ren B, Zhang W, Zhang M, Li G, Xiao M, Zhu J, Yu A, Ricardez-Sandoval L, Chen Z. Defect-Enriched Nitrogen Doped-Graphene Quantum Dots Engineered NiCo 2 S 4 Nanoarray as High-Efficiency Bifunctional Catalyst for Flexible Zn-Air Battery. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1903610. [PMID: 31512394 DOI: 10.1002/smll.201903610] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 08/28/2019] [Indexed: 05/06/2023]
Abstract
Flexible Zn-air batteries have recently emerged as one of the key energy storage systems of wearable/portable electronic devices, drawing enormous attention due to the high theoretical energy density, flat working voltage, low cost, and excellent safety. However, the majority of the previously reported flexible Zn-air batteries encounter problems such as sluggish oxygen reaction kinetics, inferior long-term durability, and poor flexibility induced by the rigid nature of the air cathode, all of which severely hinder their practical applications. Herein, a defect-enriched nitrogen doped-graphene quantum dots (N-GQDs) engineered 3D NiCo2 S4 nanoarray is developed by a facile chemical sulfuration and subsequent electrophoretic deposition process. The as-fabricated N-GQDs/NiCo2 S4 nanoarray grown on carbon cloth as a flexible air cathode exhibits superior electrocatalytic activities toward both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), outstanding cycle stability (200 h at 20 mA cm-2 ), and excellent mechanical flexibility (without observable decay under various bending angles). These impressive enhancements in electrocatalytic performance are mainly attributed to bifunctional active sites within the N-GQDs/NiCo2 S4 catalyst and synergistic coupling effects between N-GQDs and NiCo2 S4 . Density functional theory analysis further reveals that stronger OOH* dissociation adsorption at the interface between N-GQDs and NiCo2 S4 lowers the overpotential of both ORR and OER.
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Affiliation(s)
- Wenwen Liu
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L3G1, Canada
| | - Bohua Ren
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L3G1, Canada
| | - Wenyao Zhang
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L3G1, Canada
| | - Maiwen Zhang
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L3G1, Canada
| | - Gaoran Li
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L3G1, Canada
| | - Meiling Xiao
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L3G1, Canada
| | - Jianbing Zhu
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L3G1, Canada
| | - Aiping Yu
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L3G1, Canada
| | - Luis Ricardez-Sandoval
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L3G1, Canada
| | - Zhongwei Chen
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L3G1, Canada
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26
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Zhang W, Dong J, Dang G, Ji H, Jiao P, Sun B, Yang M, Li Y, Liu L, Dong L. Multifunctional nanocarriers based on graphitic-C3N4 quantum dots for tumor-targeted, traceable and pH-responsive drug delivery. NEW J CHEM 2019. [DOI: 10.1039/c9nj03081f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A multifunctional nanocarrier is developed for simultaneous targeted delivery, efficient tracking and cancer treatment at the cellular level.
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Affiliation(s)
- Wenxian Zhang
- School of Chemistry and Pharmaceutical Engineering
- Shandong First Medical University & Shandong Academy of Medical Science
- Taian
- P. R. China
| | - Jian Dong
- School of Chemistry and Pharmaceutical Engineering
- Shandong First Medical University & Shandong Academy of Medical Science
- Taian
- P. R. China
| | - Guangyao Dang
- School of Chemistry and Pharmaceutical Engineering
- Shandong First Medical University & Shandong Academy of Medical Science
- Taian
- P. R. China
| | - Haiwei Ji
- School of Chemistry and Pharmaceutical Engineering
- Shandong First Medical University & Shandong Academy of Medical Science
- Taian
- P. R. China
| | - Peng Jiao
- Life Science Research Center
- Shandong First Medical University & Shandong Academy of Medical Science
- Taian
- P. R. China
| | - Baoliang Sun
- Key Laboratory of Cerebral Microcirculation in Universities of Shandong
- Shandong First Medical University & Shandong
- Academy of Medical Science
- Taian
- P. R. China
| | - Mingfeng Yang
- Key Laboratory of Cerebral Microcirculation in Universities of Shandong
- Shandong First Medical University & Shandong
- Academy of Medical Science
- Taian
- P. R. China
| | - Yanyan Li
- School of Chemistry and Pharmaceutical Engineering
- Shandong First Medical University & Shandong Academy of Medical Science
- Taian
- P. R. China
| | - Li Liu
- School of Chemistry and Pharmaceutical Engineering
- Shandong First Medical University & Shandong Academy of Medical Science
- Taian
- P. R. China
| | - Lifeng Dong
- School of Chemistry and Pharmaceutical Engineering
- Shandong First Medical University & Shandong Academy of Medical Science
- Taian
- P. R. China
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27
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Dong J, Zhao Y, Wang K, Chen H, Liu L, Sun B, Yang M, Sun L, Wang Y, Yu X, Dong L. Fabrication of Graphitic Carbon Nitride Quantum Dots and Their Application for Simultaneous Fluorescence Imaging and pH-Responsive Drug Release. ChemistrySelect 2018. [DOI: 10.1002/slct.201802492] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jian Dong
- School of Chemistry and Pharmaceutical Engineering; Taishan Medical University, Taian; Shandong 271016 P. R. China
| | - Yanli Zhao
- School of Chemistry and Pharmaceutical Engineering; Taishan Medical University, Taian; Shandong 271016 P. R. China
| | - Kaiqi Wang
- School of Chemistry and Pharmaceutical Engineering; Taishan Medical University, Taian; Shandong 271016 P. R. China
| | - Hongyu Chen
- School of Chemistry and Pharmaceutical Engineering; Taishan Medical University, Taian; Shandong 271016 P. R. China
| | - Li Liu
- School of Chemistry and Pharmaceutical Engineering; Taishan Medical University, Taian; Shandong 271016 P. R. China
| | - Baoliang Sun
- Key Laboratory of Cerebral Microcirculation in Universities of Shandong and Department of Neurology of Affiliated Hospital; Taishan Medical University, Taian; Shandong 271016 P. R. China
| | - Mingfeng Yang
- Key Laboratory of Cerebral Microcirculation in Universities of Shandong and Department of Neurology of Affiliated Hospital; Taishan Medical University, Taian; Shandong 271016 P. R. China
| | - Liping Sun
- School of Chemistry and Pharmaceutical Engineering; Taishan Medical University, Taian; Shandong 271016 P. R. China
| | - Yi Wang
- Institute of Optometry and Department of Ophthalmology of Affiliated Hospital; Taishan Medical University, Taian; Shandong 271016 P. R. China
| | - Xuegang Yu
- College of Materials Science and Engineering; Qingdao University of Science and Technology, Qingdao; Shandong 266042 P.R. China
| | - Lifeng Dong
- School of Chemistry and Pharmaceutical Engineering; Taishan Medical University, Taian; Shandong 271016 P. R. China
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28
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Boron-doped Graphene quantum dots modified electrode for electrochemistry and electrocatalysis of hemoglobin. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.06.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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29
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Metal ions doped carbon quantum dots: Synthesis, physicochemical properties, and their applications. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.03.015] [Citation(s) in RCA: 120] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Dong J, Zhao Y, Chen H, Liu L, Zhang W, Sun B, Yang M, Wang Y, Dong L. Fabrication of PEGylated graphitic carbon nitride quantum dots as traceable, pH-sensitive drug delivery systems. NEW J CHEM 2018. [DOI: 10.1039/c8nj02542h] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fluorescent PEGylated carbon nitride quantum dots are synthesized and characterized for traceable drug delivery and cell imaging.
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Affiliation(s)
- Jian Dong
- School of Chemistry and Pharmaceutical Engineering
- Taishan Medical University
- Taian
- P. R. China
| | - Yanli Zhao
- School of Chemistry and Pharmaceutical Engineering
- Taishan Medical University
- Taian
- P. R. China
| | - Hongyu Chen
- School of Chemistry and Pharmaceutical Engineering
- Taishan Medical University
- Taian
- P. R. China
| | - Li Liu
- School of Chemistry and Pharmaceutical Engineering
- Taishan Medical University
- Taian
- P. R. China
| | - Wenxian Zhang
- School of Chemistry and Pharmaceutical Engineering
- Taishan Medical University
- Taian
- P. R. China
| | - Baoliang Sun
- Key Laboratory of Cerebral Microcirculation in Universities of Shandong and Department of Neurology of Affiliated Hospital
- Taishan Medical University
- Taian
- P. R. China
| | - Mingfeng Yang
- Key Laboratory of Cerebral Microcirculation in Universities of Shandong and Department of Neurology of Affiliated Hospital
- Taishan Medical University
- Taian
- P. R. China
| | - Yi Wang
- Institute of Optometry and Department of Ophthalmology of Affiliated Hospital
- Taishan Medical University
- Taian
- P. R. China
| | - Lifeng Dong
- School of Chemistry and Pharmaceutical Engineering
- Taishan Medical University
- Taian
- P. R. China
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31
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Feng J, Dong H, Pang B, Shao F, Zhang C, Yu L, Dong L. Theoretical study on the optical and electronic properties of graphene quantum dots doped with heteroatoms. Phys Chem Chem Phys 2018; 20:15244-15252. [DOI: 10.1039/c8cp01403e] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
By the TD-DFT approach, we demonstrate that heteroatoms can assist charge transfer and alter the distribution of electron densities in doped-GQDs.
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Affiliation(s)
- Jianguang Feng
- College of Materials Science and Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- China
| | - Hongzhou Dong
- College of Materials Science and Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- China
| | - Beili Pang
- College of Materials Science and Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- China
| | - Feifei Shao
- College of Materials Science and Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- China
| | - ChunKai Zhang
- School of Computer Science and Technology
- Harbin Institute of Technology Shenzhen Graduate School
- Shenzhen 518055
- China
| | - Liyan Yu
- College of Materials Science and Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- China
| | - Lifeng Dong
- College of Materials Science and Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- China
- Department of Physics
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32
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Dong P, Jiang BP, Liang WQ, Huang Y, Shi Z, Shen XC. Synthesis of white-light-emitting graphene quantum dots via a one-step reduction and their interfacial characteristics-dependent luminescence properties. Inorg Chem Front 2017. [DOI: 10.1039/c6qi00587j] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Graphene quantum dots (GQDs) have attracted great attention because of their possible applications in various fields.
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Affiliation(s)
- Pei Dong
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Science
- Guangxi Normal University
- Guilin
- P. R. China
| | - Bang-Ping Jiang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Science
- Guangxi Normal University
- Guilin
- P. R. China
| | - Wen-Qian Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Science
- Guangxi Normal University
- Guilin
- P. R. China
| | - Yong Huang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Science
- Guangxi Normal University
- Guilin
- P. R. China
| | - Zujin Shi
- Beijing National Laboratory for Molecular Sciences
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing
- P. R. China
| | - Xing-Can Shen
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmaceutical Science
- Guangxi Normal University
- Guilin
- P. R. China
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