Synthesis of corn straw-based graphene quantum dots (GQDs) and their application in PO43- detection

Wang, Yin; He, Qinqin; Zhao, Xin; Yuan, Junjun; Zhao, Hongjun; Wang, Gongting; Li, Min

doi:10.1016/j.jece.2022.107150

Cited by 25 publications

(14 citation statements)

References 54 publications

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“…Figure S4 summarizes some reports on the preparation of quantum dots from biomass materials. Compared with other materials, it is not difficult to see that the QY of this work is significantly higher than that of most reports. ,,,,, …”

Section: Resultscontrasting

confidence: 53%

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Cane Molasses Derived N-Doped Graphene Quantum Dots: Dynamic Quenching Synergistically Photoinduced Electron Transfer for the Instant Detection of Nitrofuran Antibiotics

et al. 2023

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The development of a highly selective, simple, and rapid detection method for nitrofuran antibiotics (NFs) is of great significance for food safety, environmental protection, and human health. To meet these needs, in this work, cyan-color highly fluorescent N-doped graphene quantum dots (N-GQDs) were synthesized using cane molasses as the carbon source and ethylenediamine as the nitrogen source. The synthesized N-GQDs have an average particle size of 6 nm, a high fluorescence intensity with 9 times that of undoped GQDs, and a high quantum yield (24.4%) which is more than 6 times that of GQDs (3.9%). A fluorescence sensor based on N-GQDs for the detection of NFs was established. The sensor shows advantages of fast detection, high selectivity, and sensitivity. The limit of detection for furazolidone (FRZ) was 0.29 μM, the limit of quantification (LOQ) was 0.97 μM, and the detection range was 5−130 μM. The fluorescence quenching mechanism of the sensor was explored by fluorescence spectroscopy, UV−vis absorption spectroscopy, Stern−Volmer quenching constant, Zeta potential, UV−vis diffuse reflectance spectroscopy, and cyclic voltammetry. A fluorescence quenching mechanism of dynamic quenching synergized with photoinduced electron transfer was revealed. The developed sensor was also successfully applied for detecting FRZ in various real samples, and the results were satisfactory.

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Section: Resultscontrasting

confidence: 53%

“…Compared with other materials, it is not difficult to see that the QY of this work is significantly higher than that of most reports. 16,22,23,30,39,40 Stability of the N-GQDs. In order to explore more application areas, the stability of GQDs and N-GQDs was evaluated by Zeta potential and fluorescence.…”

Section: Effects Of Synthesis and Test Conditions On N-gqdsmentioning

confidence: 99%

Cane Molasses Derived N-Doped Graphene Quantum Dots: Dynamic Quenching Synergistically Photoinduced Electron Transfer for the Instant Detection of Nitrofuran Antibiotics

et al. 2023

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“…They looked into the use of produced quantum dots in Fe 3+ detection and cell imaging. Wang et al [93] synthesized GQDs from corn straw to detect phosphate ions. 2.5.…”

Section: Electrochemical Oxidation Methodsmentioning

confidence: 99%

Comprehensive Review on Synthesis, Applications, and Challenges of Graphene Quantum Dots (GQDs)

Kadyan

Malik

Bhatia

et al. 2023

Journal of Nanomaterials

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Carbon-based nanomaterials are contemporary and are outpacing the technology platform. Graphene quantum dots (GQDs) had a significant impact on the subject of bioengineering, pharmaceuticals, biomedicine, biosensors, fuel, energy, etc. Depending on how quickly this field is developing, it is important to recognize the new difficulties that GQDs have to overcome. This is incredibly significant because many novel applications and innovations that have made GQD synthesis easier recently have not been systematically evaluated in prior studies. Their ability to combine the benefits of quantum dots, sp2 carbon materials (large specific surface area), and have rich functional groups at the edge makes them special. The naturally occurring inert carbon helps to stabilize chemical and physical characteristics and makes significant advancements in the creation of benchmark photocatalysts. Moreover, current challenges and potential of these rapidly developing GQDs are emphasized. The future of GQD research is limitless, according to the assessment in this review, notably if future research focuses on simplicity of purification and ecofriendly synthesis. This feature article offers a realistic summary on recent developments in the synthesis, characteristics, and uses of GQDs. Frequent review articles focusing on the progress of GQDs for specific applications are published but a thorough review article on GQDs for their numerous uses has not yet been published. The recent trends of scientific research based on new optical biosensing applications, including the comprehensive applications of different zero-dimensional nanomaterials, specially GQDs are discussed in this study.

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“…Among all the nanomaterials recently designed for sensing applications, carbon dots (CDs), a typical member of the carbon materials family, have attracted enormous attention in the field of fluorescence sensors, owing to their excellent optical properties, good biocompatibility, high water solubility, and environmental friendliness [ 5 , 17 , 18 , 19 , 20 , 21 ]. Recently, various applications of CDs in environmental monitoring and chemical sensing have been explored [ 4 , 5 , 22 , 23 , 24 , 25 ]. It is widely known that the carbon cores and surface structure of CDs are highly related to their optical properties and detection capability [ 5 , 26 , 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

One-Step Synthesis of Nitrogen/Fluorine Co-Doped Carbon Dots for Use in Ferric Ions and Ascorbic Acid Detection

et al. 2022

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Carbon dots (CDs) have caught enormous attention owing to their distinctive properties, such as their high water solubility, tunable optical properties, and easy surface modification, which can be generally used for the detection of heavy metals and organic pollutants. Herein, nitrogen and fluorine co-doped carbon dots (NFCDs) were designed via a rapid, low-cost, and one-step microwave-assisted technique using DL-malic acid and levofloxacin. The NFCDs emitted intense green fluorescence under UV lighting, and the optical emission peak at 490 nm was observed upon a 280 nm excitation, with a high quantum yield of 21.03%. Interestingly, the spectral measurements illustrated excitation-independent and concentration-independent single-color fluorescence owing to the presence of nitrogen and fluorine elements in the surface functional groups. Additionally, the NFCDs were applied for the selective detection of Fe3+ and ascorbic acid based on the “turn-off” mode. The detection limits were determined as 1.03 and 4.22 µM, respectively. The quenching mechanisms were explored using the static quenching mechanism and the inner filter effect. Therefore, a NFCDs fluorescent probe with single color emission was successfully developed for the convenient and rapid detection of Fe3+ and ascorbic acid in environments.

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Synthesis of corn straw-based graphene quantum dots (GQDs) and their application in PO43- detection

Cited by 25 publications

References 54 publications

Cane Molasses Derived N-Doped Graphene Quantum Dots: Dynamic Quenching Synergistically Photoinduced Electron Transfer for the Instant Detection of Nitrofuran Antibiotics

Cane Molasses Derived N-Doped Graphene Quantum Dots: Dynamic Quenching Synergistically Photoinduced Electron Transfer for the Instant Detection of Nitrofuran Antibiotics

Comprehensive Review on Synthesis, Applications, and Challenges of Graphene Quantum Dots (GQDs)

One-Step Synthesis of Nitrogen/Fluorine Co-Doped Carbon Dots for Use in Ferric Ions and Ascorbic Acid Detection

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