Graphene quantum dots nanosensor derived from 3D nanomesh graphene frameworks and its application for fluorescent sensing of Cu2+ in rat brain

Wang, Chunxia; Yang, Fan; Tang, Yushu; Yang, Wang; Zhong, Huangliang; Yu, Changchun; Li, Ranjia; Zhou, Hongjun; Li, Yongfeng; Mao, Lanqun

doi:10.1016/j.snb.2017.11.098

Cited by 37 publications

(12 citation statements)

References 65 publications

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“…Later, this method was used to test the river and tap water with good results. Wang et al 128 reported an effective uorescent nanosensor based on GQDs for selective and sensitive determination of Cu 2+ in the rat brain. The nanosensor shows the detection range from 0.1 mM to 1.0 mM with a limit of detection of 0.067 mM.…”

Section: Sensorsmentioning

confidence: 99%

Graphene quantum dot based materials for sensing, bio-imaging and energy storage applications: a review

et al. 2020

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Section: Sensorsmentioning

confidence: 99%

Graphene quantum dot based materials for sensing, bio-imaging and energy storage applications: a review

et al. 2020

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“…The formation of complexation between Cu 2+ and GQDs produced a static quenching that quenched the fluorescence of GQDs. The fluorescence ratio showed a good linear relationship with Cu 2+ concentration within 0.1 µM to 1.0 µM, and the limit of detection was calculated to be 67 nM [86]. Table 5 covers all of the optical sensing of copper ions using GQDs.…”

Section: Incorporation Of Graphene Quantum Dots With Optical Sensomentioning

confidence: 99%

Development of Graphene Quantum Dots-Based Optical Sensor for Toxic Metal Ion Detection

Anas

Fen

Omar

et al. 2019

Sensors

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About 71% of the Earth’s surface is covered with water. Human beings, animals, and plants need water in order to survive. Therefore, it is one of the most important substances that exist on Earth. However, most of the water resources nowadays are insufficiently clean, since they are contaminated with toxic metal ions due to the improper disposal of pollutants into water through industrial and agricultural activities. These toxic metal ions need to be detected as fast as possible so that the situation will not become more critical and cause more harm in the future. Since then, numerous sensing methods have been proposed, including chemical and optical sensors that aim to detect these toxic metal ions. All of the researchers compete with each other to build sensors with the lowest limit of detection and high sensitivity and selectivity. Graphene quantum dots (GQDs) have emerged as a highly potential sensing material to incorporate with the developed sensors due to the advantages of GQDs. Several recent studies showed that GQDs, functionalized GQDs, and their composites were able to enhance the optical detection of metal ions. The aim of this paper is to review the existing, latest, and updated studies on optical sensing applications of GQDs-based materials toward toxic metal ions and future developments of an excellent GQDs-based SPR sensor as an alternative toxic metal ion sensor.

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“…In the context of strong luminescence properties, GQDs have been used to detect different analytes 38 – 40 . A number of sensors have been developed based on the PL quenching mechanism of GQDs 41 – 43 . Wang et al was the first to report on Fe 3+ ions detection by selective fluorescence quenching of GQDs 43 .…”

Section: Introductionmentioning

confidence: 99%

High yield synthesis of graphene quantum dots from biomass waste as a highly selective probe for Fe3+ sensing

Abbas

Tabish

Bull

et al. 2020

Sci Rep

168

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Graphene quantum dots (GQDs), a novel type of zero-dimensional fluorescent materials, have gained considerable attention owing to their unique optical properties, size and quantum confinement. However, their high cost and low yield remain open challenges for practical applications. In this work, a low cost, green and renewable biomass resource is utilised for the high yield synthesis of GQDs via microwave treatment. The synthesis approach involves oxidative cutting of short range ordered carbon derived from pyrolysis of biomass waste. The GQDs are successfully synthesised with a high yield of over 84%, the highest value reported to date for biomass derived GQDs. As prepared GQDs are highly hydrophilic and exhibit unique excitation independent photoluminescence emission, attributed to their single-emission fluorescence centre. As prepared GQDs are further modified by simple hydrothermal treatment and exhibit pronounced optical properties with a high quantum yield of 0.23. These modified GQDs are used for the highly selective and sensitive sensing of ferric ions (Fe3+). A sensitive sensor is prepared for the selective detection of Fe3+ ions with a detection limit of as low as 2.5 × 10–6 M. The utilisation of renewable resource along with facile microwave treatment paves the way to sustainable, high yield and cost-effective synthesis of GQDs for practical applications.

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Graphene quantum dots nanosensor derived from 3D nanomesh graphene frameworks and its application for fluorescent sensing of Cu2+ in rat brain

Cited by 37 publications

References 65 publications

Graphene quantum dot based materials for sensing, bio-imaging and energy storage applications: a review

Graphene quantum dot based materials for sensing, bio-imaging and energy storage applications: a review

Development of Graphene Quantum Dots-Based Optical Sensor for Toxic Metal Ion Detection

High yield synthesis of graphene quantum dots from biomass waste as a highly selective probe for Fe3+ sensing

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