Chicken Red Blood Cells

Converting of the 2D Graphene to its 3D By Chicken Red Blood Cells as Sheets Separator for Construction Supercapacitor Electrode

Traditional 3D graphene lacks cost-effective, green spacers and heteroatom dopants. Jamshidi et al. introduced chicken red blood cells as both porogen and N/S source to fabricate porous 3D graphene for high-performance supercapacitors.

Chicken red blood cells (RBCs) were used as raw materials for synthesizing graphene-based composites. GO-RBCs hybrids were formed by stirring a mixture containing a suspension of GO and RBCs for 5 hours. Subsequently, a freeze-drying method was employed to produce the macro-porous hybrids (GO-RBCs-F). Finally, to enhance the micro-porosity and improve the conductivity of the composites, the material was pyrolyzed under a nitrogen atmosphere, resulting in the product denoted as GO-RBCs-F-P. Before using the freeze casting method to produce the macro-porous hybrid, the interaction between RBCs and GO was investigated by examining the zeta potentials of the reactants and products. Since the pH of graphene oxide suspension is around 3.5, the zeta potential investigation was conducted at this pH. As shown in Figure 1A, the zeta potential of the RBCs solution at pH 3.5 is about 15 mV. The zeta potential of GO (Fig. 1B) was -28 mV, which is consistent with other reports on GO. After mixing the RBCs solution with GO, the zeta potential of the GO-RBCs mixture changed to -18 mV, indicating successful interaction between GO and RBCs (Fig. 1C). In this step, as expected, the surface of the GO sheets was covered with RBCs or hemoglobin, facilitating further separation of the GO sheets.