Synthesis of Thiolated Graphene Quantum Dots and Their Application in the Measurement of Mercury Ions

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ROUSHANI M.; SHOKRI M.; FAROKHI S.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: NANOSCALE Year:2019 | Volume:6 | Issue:1 Page(s): 1-10

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Title

Synthesis of Thiolated Graphene Quantum Dots and Their Application in the Measurement of Mercury Ions

Author(s)

ROUSHANI M. | SHOKRI M. | FAROKHI S. | Issue Writer Certificate

Keywords

MercuryQ1

Thiolated graphene quantum dotsQ1

Fluorescence emissionQ1

Excitation wavelengthQ1

Abstract

In this work, at first Thiolated graphene quantum dots (tio-GQDs) was synthesized. Characterization of the synthesized compound was carried out by the use of infrared spectroscopy. The obtained results confirmed that the tio-GQDs were successfully synthesized. The size of these quantum dots was investigated by TEM. On the base of achieved images, the average dimeters of nanoparticles were estimated about 50 nm. The oxidized GQDs were thiol functionalized with cysteamine. In the following the prepared nanoparticles were applied for the determination of trace amount of Mercury. To this end, the fluorescent quenching process of tio-GQDs was investigated. Fluorescent quenching process was very fast that was an important advantage of this nanosensor. The limit of detection was obtained 0. 160 μ M and linear concentration rang 0. 5 µ M to 1 mM. Interference effects of other ions on Mercury determination by thio-GQDs were studied in the presence of other species. The usage of tio-GQDs for determination of Mercury is an easy, effective, fast, inexpensive, low toxicity and environmentally friendly method. Finally, the synthesized Thiolated graphene quantum dots were applied for the determination of Mercury in the real samples and selectivity with satisfactory results.

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APA: Copy

ROUSHANI, M., SHOKRI, M., & FAROKHI, S.. (2019). Synthesis of Thiolated Graphene Quantum Dots and Their Application in the Measurement of Mercury Ions. NANOSCALE, 6(1 ), 1-10. SID. https://sid.ir/paper/257053/en

Vancouver: Copy

ROUSHANI M., SHOKRI M., FAROKHI S.. Synthesis of Thiolated Graphene Quantum Dots and Their Application in the Measurement of Mercury Ions. NANOSCALE[Internet]. 2019;6(1 ):1-10. Available from: https://sid.ir/paper/257053/en

IEEE: Copy

M. ROUSHANI, M. SHOKRI, and S. FAROKHI, “Synthesis of Thiolated Graphene Quantum Dots and Their Application in the Measurement of Mercury Ions,” NANOSCALE, vol. 6, no. 1 , pp. 1–10, 2019, [Online]. Available: https://sid.ir/paper/257053/en

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