Chitosan-rectorite nanospheres embedded aminated polyacrylonitrile nanofibers via shoulder-to-shoulder electrospinning and electrospraying for enhanced heavy metal removal
作者： Mengtian Huang , Hu Tu , Jiajia Chen , Rong Liu , Zhaoyi Liang
DOI: 10.1016/J.APSUSC.2017.12.150
关键词:
摘要: Abstract Chitosan (CS) has a high amine group content, while polyacrylonitrile (PAN) contains cyano-groups that can be easily converted to groups. Herein, novel adsorbent consisting of PAN-CS mats was successfully prepared via the shoulder-to-shoulder electrospinning and electrospraying techniques, which could eliminate obstacle selecting co-solvent system for dissolving PAN CS together. The morphology resultant with adherent nanofibers-nanospheres observed due immobilization electrosprayed nanospheres into electrospun nanofibrous mats. Furthermore, nanofibers were alternately arranged enlarge space between nanofibers, facilitating diffusion heavy metals in solution. Afterwards, rectorite (REC) introduced achieve predesigned intercalated structure formed chains interlayer REC even acquired desirable enhanced adsorption ability towards metals. Based on this improvement, chemical modification performed surface form aminated (APAN) more groups reinforcing performance. experiments results showed APAN-CS/REC exhibited at least 2.0 times increase capacity Pb2+ compared original composite
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