Synthesis of Carbon Nanomaterials Based on Graphene Quantum Dots and Improving Surface Properties via Chemical Modification

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Mehrdad Vahdati B.; RASHIDI A.M.; NADERI MANESH H.; RASEKH B.

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Journal: JOURNAL OF BIOTECHNOLOGY Year:2020 | Volume:11 | Issue:1 Page(s): 71-76

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Title

Synthesis of Carbon Nanomaterials Based on Graphene Quantum Dots and Improving Surface Properties via Chemical Modification

Author(s)

Mehrdad Vahdati B. | RASHIDI A.M. | NADERI MANESH H. | RASEKH B. | Issue Writer Certificate

Keywords

Graphene Quantum DotQ1

Chemical ActivationQ1

BET TestQ1

Abstract

Aims: Graphene Quantum Dots (GQDs) have attracted increasing attention due to their unique properties such as high water solubility, photoluminescence activity, good biocompatibility, physical, chemical, and electrical properties which makes them appropriate candidates for use in a variety of bioapplications, sensors, and photocatalysts. The objective of this study is the synthesis of GQDs and improving their surface properties via chemical modification. Materials & Methods: In the present study, citric acid and urea as carbon precursor were used. Citric acid was self-assembled into graphene framework via hydrothermal method at 160° C for 4h. Then, the synthesized GQDs were carbonized and chemically activated by potassium hydroxide (KOH) treatment. The surface area and pore structures of GQDs were analyzed by nitrogen adsorption/desorption isotherms. Findings: The results showed that the specific surface area of carbonizedactivated Graphene Quantum Dots (CA-GQDs) has been increased from 0. 06 to 12043. 0m2/g and pore structures have been enhanced significantly. The XRD pattern of GQDs confirmed the basic structure of graphite layer. The TEM images indicated the uniform morphology of GQDs and the size of GQDs was less than 5nm. Conclusion: In this study, applied method is an effective approach in the formation of GQDs with large BET surface area and narrow pore structures which reveals their efficient applicability in biomedical field.

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APA: Copy

Mehrdad Vahdati, B., RASHIDI, A.M., NADERI MANESH, H., & RASEKH, B.. (2020). Synthesis of Carbon Nanomaterials Based on Graphene Quantum Dots and Improving Surface Properties via Chemical Modification. JOURNAL OF BIOTECHNOLOGY, 11(1 ), 71-76. SID. https://sid.ir/paper/231196/en

Vancouver: Copy

Mehrdad Vahdati B., RASHIDI A.M., NADERI MANESH H., RASEKH B.. Synthesis of Carbon Nanomaterials Based on Graphene Quantum Dots and Improving Surface Properties via Chemical Modification. JOURNAL OF BIOTECHNOLOGY[Internet]. 2020;11(1 ):71-76. Available from: https://sid.ir/paper/231196/en

IEEE: Copy

B. Mehrdad Vahdati, A.M. RASHIDI, H. NADERI MANESH, and B. RASEKH, “Synthesis of Carbon Nanomaterials Based on Graphene Quantum Dots and Improving Surface Properties via Chemical Modification,” JOURNAL OF BIOTECHNOLOGY, vol. 11, no. 1 , pp. 71–76, 2020, [Online]. Available: https://sid.ir/paper/231196/en

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