2.3 Synthesis of RCNs
3.0g of F127 and 1.5g of glucose were
dissolved in the 1.8M sulfuric
acid solution, stirring for 10 h. Then, 30mL of the mixture was
transferred to a 50mL Teflon-lined stainless steel autoclave for
hydrothermal treatment for 30h at 140°C. After cooling to the room
temperature, the products were collected by centrifugation and washed
with water and ethanol several times. The obtained samples were dried at
60°C in vacuum oven overnight.