TY - JOUR
T1 - 聚丙烯腈螯合纳米纤维膜对重金属离子的选择性吸附研究
AU - Wang, Xiang
AU - Gong, Chenyue
AU - Wu, Jiandan
AU - Zhang, Aiying
AU - Ye, Lin
AU - Feng, Zengguo
N1 - Publisher Copyright:
© 2021, Beijing Yanshan Branch, Assets Management Corporation, SINOPEC. All right reserved.
PY - 2021/7/25
Y1 - 2021/7/25
N2 - Polyacrylonitrile(PAN) nanofiber membranes were prepared via electrostatic spinning technique, which were chemically modified in hydroxylamine hydrochloride solution to obtain amidoxime PAN(A-PAN) nanofiber membranes. The results show that higher reaction temperature accelerates the conversion of -CN to amidoxime group and breaks the crystalline structure of A-PAN, the flexibility of the fibrous membrane is therefore reduced. A-PAN fiber membranes adsorb Fe(Ⅲ), Cu(Ⅱ), and Pb(Ⅱ) mixed ions selectively, which can be described by pseudo second order kinetics equation as chemisorption and controlled by both the diffusion and the coordination reaction of the metal ions. The adsorption of Fe(Ⅲ) is the highest, with an equilibrium adsorption capacity of 117.42 mg/g. The A-PAN fibrous membranes have potential values in the treatment of heavy metal pollution, the enrichment and recovery of precious metals.
AB - Polyacrylonitrile(PAN) nanofiber membranes were prepared via electrostatic spinning technique, which were chemically modified in hydroxylamine hydrochloride solution to obtain amidoxime PAN(A-PAN) nanofiber membranes. The results show that higher reaction temperature accelerates the conversion of -CN to amidoxime group and breaks the crystalline structure of A-PAN, the flexibility of the fibrous membrane is therefore reduced. A-PAN fiber membranes adsorb Fe(Ⅲ), Cu(Ⅱ), and Pb(Ⅱ) mixed ions selectively, which can be described by pseudo second order kinetics equation as chemisorption and controlled by both the diffusion and the coordination reaction of the metal ions. The adsorption of Fe(Ⅲ) is the highest, with an equilibrium adsorption capacity of 117.42 mg/g. The A-PAN fibrous membranes have potential values in the treatment of heavy metal pollution, the enrichment and recovery of precious metals.
KW - Amidoximation
KW - Chelated nanofiber membrane
KW - Heavy metal ion
KW - Polyacrylonitrile
KW - Selective adsorption
UR - http://www.scopus.com/inward/record.url?scp=85111755261&partnerID=8YFLogxK
U2 - 10.19825/j.issn.1002-1396.2021.04.01
DO - 10.19825/j.issn.1002-1396.2021.04.01
M3 - 文章
AN - SCOPUS:85111755261
SN - 1002-1396
VL - 38
SP - 1
EP - 6
JO - Hecheng Shuzhi Ji Suliao/China Synthetic Resin and Plastics
JF - Hecheng Shuzhi Ji Suliao/China Synthetic Resin and Plastics
IS - 4
ER -