Outstanding Graphene Quantum Dots from Carbon Source for Biomedical and Corrosion Inhibition Applications: A Review

Abstract

Graphene quantum dots (GQD) is an efficient nanomaterial composed of one or more layers of graphene with unique properties that combine both graphene and carbon dots (CDs). It can be synthesized using carbon-rich materials as precursors, such as graphite, macromolecules polysaccharides, and fullerene. This contribution emphasizes the utilization of GQD-based materials in the fields of sensing, bioimaging, energy storage, and corrosion inhibitors. Inspired by these numerous applications, various synthetic approaches have been developed to design and fabricate GQD, particularly bottom-up and top-down processes. In this context, the prime goal of this review is to emphasize possible eco-friendly and sustainable methodologies that have been successfully employed in the fabrication of GQDs. Furthermore, the fundamental and experimental aspects associated with GQDs such as possible mechanisms, the impact of size, surface alteration, and doping with other elements, together with their technological and industrial applications have been envisaged. Till now, understanding simple photo luminance (PL) operations in GQDs is very critical as well as there are various methods derived from the optical properties of manufactured GQDs can differ. Lack of determining exact size and morphology is highly required without loss of their optical features. Finally, GQDs are promising candidates in the after-mentioned application fields.

In Vitro Studies of Graphene for Management of Dental Caries and Periodontal Disease: A Concise Review

“…Various graphene derivatives have been reported in recent studies. Namely, graphene oxide, reduced graphene oxide, graphene, graphone, flurographene, graphyne, graphdiyne, doped graphene, and graphene quantum dots were well reported [ 36 , 37 , 38 ]. Among them, graphene, graphene oxide, reduced graphene oxide, and graphene quantum dots were mostly studied in the biomedical research field [ 39 ].…”

Research Progress of Graphene Nano-Electromechanical Resonant Sensors—A Review

“…In summary, the graphene resonator can realize the detection of mass, force and other physical quantities based on the measured modulation law of the vibration characteristics of graphene sheets. The preparation technology of graphene materials and related resonators has achieved great progress and has made corresponding progress in the fields of quantum effects and optoelectronic devices [23][24][25][26]37]. However, the current research on graphene resonant sensing technology is in the stage of theoretical analysis and numerical simulation, and there is still a lack of sufficient literature reports on the overall structural design and related experimental research of the sensor.…”

“…When graphene has a size of micron, its fundamental frequency can reach megahertz [17]. In recent years, scholars have carried out in-depth theoretical and experimental research on the mechanical, electrical [18][19][20][21], optical [19,[22][23][24][25][26], thermal [27] and chemical properties of graphene [28,29], predicting its application potential for high-performance sensors [30][31][32][33][34][35][36][37][38].…”

Highly sensitive and selective detection of dopamine with boron and sulfur co-doped graphene quantum dots

“…But the extensive synthesis procedure, lack of control over experimental parameters, low yield, broad size distribution, etc. are some of the disadvantages 30 . The bottom-up approach utilizes smaller molecules as starting materials 31 , 32 providing a more controllable strategy with more control over the optical properties, high yield and good carbonation compared to top-down approach 33 .…”