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Structural Defects in Graphene Quantum Dots: A Review
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  • Ramisha Rabeya,
  • Savisha Mahalingam,
  • Abreeza BTE ABD. Manap,
  • Meenaloshini Satgunam,
  • Md. Akhtaruzzaman,
  • Chia Hua
Ramisha Rabeya
Universiti Tenaga Nasional
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Savisha Mahalingam
Universiti Tenaga Nasional
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Abreeza BTE ABD. Manap
Universiti Tenaga Nasional
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Meenaloshini Satgunam
Universiti Tenaga Nasional
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Md. Akhtaruzzaman
Universiti Kebangsaan Malaysia
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Chia Hua
Universiti Kebangsaan Malaysia
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Abstract

Graphene quantum dots (GQDs) are known for their low toxicity, strong fluorescence, high surface area, large solubility and tunable band gaps. However, the change in their properties depends on the preparation processes of GQDs. Thus, certain types of preparation lead to certain defects, such as surface defect, edge defects, Stone-Wales defect. These structural defects are responsible for hindering GQDs to possess their regular shape that affects the morphological properties of GQDs. Thus, the optical and electrical properties get affected. The GQDs, which are synthesized via acidic methods are generally more vulnerable to defects compared to those synthesized using eco-friendly methods. Thereby, the aim of this review is to discuss the causes of structural defects. Moreover, it focuses on how they affect the properties of GQDs and to what extent they affect them. The processes of regulating defects have been elucidated so that more efficient applications can be designed using GQDs with controlled amounts of defects.

Peer review status:IN REVISION

08 Dec 2021Submitted to International Journal of Quantum Chemistry
08 Dec 2021Assigned to Editor
08 Dec 2021Submission Checks Completed
08 Dec 2021Reviewer(s) Assigned
26 Dec 2021Review(s) Completed, Editorial Evaluation Pending
29 Dec 2021Editorial Decision: Revise Major