Abstract
AbstractA new strategy was developed to prepare nanoscale porous carbon spheres (PCSs) using cross‐linked chitosan/poly(γ‐glutamic acid) colloidal particles as precursor. The fabricated cross‐linked chitosan/poly(γ‐glutamic acid) colloidal particles (Ca2+/CS/γ‐PGA CPs) were prepared from the self‐assembly of negatively charged poly(γ‐glutamic acid) and positively charged chitosan, and the cross‐linking of Ca2+ in aqueous solution, via the electrostatic interaction. After lyophilization, the Ca2+/CS/γ‐PGA CPs power was obtained, followed by carbonization in a tube furnace under N2 atmosphere. Finally, the products were washed by hydrochloric acid, obtaining PCSs with hierarchical pore structure and super‐hydrophobicity. The prepared PCSs exhibited excellent separation performance for oil‐in‐water emulsions.
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