| Abstract:In this paper, the porous precursor fiber was prepared with electrospinning by adjusting the mass ratio of lignin and cellulose acetate, which then undergo the pre-oxidation and carbonization process to obtain lignin/cellulose acetate based micro-nano carbon fibers. The spectrum of FT-IR and thermal stability analysis showed that lignin and cellulose acetate spinning solution were well mixed, and the thermal stability and glass transition temperature of the precursor fiber after blending were better than that of cellulose acetate.When the ratio of cellulose acetate to lignin was 8:2, the micro-nanocarbon fiber had smallest diameter, the pores were evenly distributed, the maximum specific surface area was 173.42 m2/g, and the maximum water contact angle was 129.3°. Methylene blue adsorption capacity was the best, reached 49.30 mg/g. Moreover, after using 7 cycles, its methylene blue adsorption capacity could still reach more than 95% of that of the initial use. |
