Laser-ablation production of graphene oxide nanostructures: from ribbons to quantum dots

Abstract

A new one-step method for the preparation of graphene oxide (GO) nanostructures has been developed by pulsed laser ablation in GO solution. The formation of different shapes of GO nanostructures, such as ribbons, nanoflakes (including nano-squares, nano-rectangles, nano-triangles, nano-hexagons, and nano-disks) and quantum dots, has been demonstrated by scanning electron microscopy and transmission electron microscopy. Photoreduction for the GO occurred during irradiation by the pulsed laser. The GO quantum dots exhibit a blue photoluminescence, originating from recombination of the localized carriers in the zigzag-edge states.

Rapid and facile synthesis of graphene oxide quantum dots with good linear and nonlinear optical properties

“…Rashid et al [31] reported the synthesis of GOQDs from graphite nanofibers with good photoluminescence properties. Lin et al [32] produced blue photoluminescence GOQDs by laser-ablation. However, all these reported methods are time consuming and therefore, it is important to develop an entirely new approach to synthesis GOQDs with good optical properties in shorter reaction time.…”

Synthesis of Black Phosphorus Quantum Dots with High Quantum Yield by Pulsed Laser Ablation for Cell Bioimaging

“…Typically,g raphene-related nanomaterials have been synthesized by ablatinghighly oriented pyrolytic graphite (HOPG) in water. [17,18] Fortunately,B Prelatedn anomaterials can also be prepared by meanso fthe PLA method.…”

Oxygenated graphene quantum dots (GQDs) synthesized using laser ablation for long-term real-time tracking and imaging

“…22 A 1064 nm LASER was able to ablate the surface of a graphite plate immersed in liquid via thermal relaxation process. 23,24 Ablation of graphite plate resulted in the formation of large sheets of graphene layers (single and multiwall) and GQDs in solution (see Fig. S2 †).…”