Abstract
We report for the first time a novel erythrocyte-like graphene microsphere (ELGMs) which can be produced with high quality and mass production capability via electrospray assisted self-assembly. Through simple electrospray treatment of GO suspension into coagulation bath followed by chemical reduction, large quantity of ELGMs with uniform morphology and size can be obtained with production rate of around 2.4 mg/h. Compared with other 3D structures, the ELGMs have a very interesting structural characteristic of perfect exterior doughnut shape and interior porous network. Accordingly, the as-prepared porous ELGMs exhibit excellent capability for fast and recyclable removal of oil and toxic organic solvents from water, reaching up to 216 times of its weight in absorption efficiency, which is tens of times higher than that of conventional sorbent materials. It is strongly believed that the novel hierarchical graphene structures and synergy among different techniques will lead to more future advances in graphene applications.
Highlights
We report for the first time a novel erythrocyte-like graphene microsphere (ELGMs) which can be produced with high quality and mass production capability via electrospray assisted self-assembly
Through simple electrospray treatment of graphene oxide (GO) suspension into coagulation bath followed by chemical reduction, large quantity of ELGMs with uniform morphology and size can be obtained with production rate of around 2.4 mg/h
When a sufficiently high voltage is applied, the body of the liquid becomes charged, and electrostatic repulsion counteracts the surface tension and the droplet is stretched; at a critical point a stream of liquid erupts from the surface. This point of eruption is known as the Taylor cone. Those erupted droplets were collected into the cetyltrimethylammonium bromide (CTAB) coagulation bath to form GO microspheres in large scale
Summary
We report for the first time a novel erythrocyte-like graphene microsphere (ELGMs) which can be produced with high quality and mass production capability via electrospray assisted self-assembly. 3D graphene foams and sponges exhibit unique flexible network, high specific surface area, and outstanding electrical and mechanical properties, which enable significant progress in developing flexible electronics and energy-related materials[17] It is of great scientific and technological importance to assembly such 2D building blocks into organized hierarchical structures. Diameters of the ELGMs are in range of 70–200 mm which can be tuned mainly with concentrations of GO suspension and surfactant in coagulation bath Compared with those already existed methods, electrospray assisted self-assembly is introduced to be a more www.nature.com/scientificreports effective and easy-handle manufacturing approach to produce novel graphene functional materials in a continuous, controllable and large-scale manner.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
