Glutaraldehyde cross-linked CDA/HBP-NH nanofiber membrane for adsorption of heavy metal ions in wastewater

A new type of nanofiber membrane was prepared by mixed electrospinning of cellulose diacetate and amino-terminated hyperbranched polymer (HBP-NH 2 ), and glutaraldehyde (GA) crosslinking was used to improve its water resistance and shape retention. pH, adsorption time, and initial solution concentra...

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Bibliographic Details
Published in:RSC advances 2021-12, Vol.11 (62), p.38982-38989
Main Authors: Chuanfeng, Zang, Xiangye, Han, Erying, Dong, Feiyu, Shen, Tingting, Yan, Runyue, Wang, GuangyuYu, Zhang
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Summary:A new type of nanofiber membrane was prepared by mixed electrospinning of cellulose diacetate and amino-terminated hyperbranched polymer (HBP-NH 2 ), and glutaraldehyde (GA) crosslinking was used to improve its water resistance and shape retention. pH, adsorption time, and initial solution concentration on Cu( ii ) and Cr( vi ) ions were studied. Results showed that the prepared GA-CDA/HBP-NH 2 nanofiber had good spinning uniformity, hydrophilicity, and adsorption effect on Cu( ii ) and Cr( vi ) ions compared with the pure CDA nanofiber. The maximum adsorption capacity of GA-CDA/HBP-NH 2 for Cu( ii ) and Cr( vi ) was 50.2 and 176.6 mg g −1 , respectively. A new type of nanofiber membrane was prepared by mixed electrospinning of cellulose diacetate and amino-terminated hyperbranched polymer (HBP-NH 2 ), and glutaraldehyde (GA) crosslinking was used to improve its water resistance and shape retention.
ISSN:2046-2069
DOI:10.1039/d1ra06156a