TY - JOUR
T1 - Incorporating organic nanospheres into the polyamide layer to prepare thin film composite membrane with enhanced biocidal activity and chlorine resistance
AU - Liao, Zhipeng
AU - Fang, Xiaofeng
AU - Li, Jiansheng
AU - Li, Xin
AU - Zhang, Wuxiang
AU - Sun, Xiuyun
AU - Shen, Jinyou
AU - Han, Weiqing
AU - Zhao, Shuaifei
AU - Wang, Lianjun
PY - 2018/12/22
Y1 - 2018/12/22
N2 - To enhance the antibacterial property and chlorine resistance, organic nanospheres, polypyrrole (PPy), were innovatively incorporated into the polyamide (PA) layer for fabricating thin film nanocomposite (TFN) membranes. Owing to the improved hydrophilicity and compatibility between the PPy nanospheres and the PA layer, the obtained TFN membranes exhibited significant water flux enhancement without sacrificing salt rejection. Under the optimal PPy dosage (0.006 wt%), TFN membranes showed a high water flux of 42.19 L/(m2 h), which was 118.0% higher than that of the pristine membrane. Remarkably, the chlorine resistance of TFN membranes was strengthened after the incorporation of PPy nanospheres, as evidenced by the less decreased salt rejection, as compared with the TFC and commercial RO membrane. In addition, the positively charged PPy nanospheres immobilized in the PA layer endow the TFN membranes with improved biocidal activity, which was much higher than that of the pristine membrane. This study shows that incorporating organic nanospheres into the PA layer is an effective strategy to develop new TFN membranes with enhanced performance for advanced water purification.
AB - To enhance the antibacterial property and chlorine resistance, organic nanospheres, polypyrrole (PPy), were innovatively incorporated into the polyamide (PA) layer for fabricating thin film nanocomposite (TFN) membranes. Owing to the improved hydrophilicity and compatibility between the PPy nanospheres and the PA layer, the obtained TFN membranes exhibited significant water flux enhancement without sacrificing salt rejection. Under the optimal PPy dosage (0.006 wt%), TFN membranes showed a high water flux of 42.19 L/(m2 h), which was 118.0% higher than that of the pristine membrane. Remarkably, the chlorine resistance of TFN membranes was strengthened after the incorporation of PPy nanospheres, as evidenced by the less decreased salt rejection, as compared with the TFC and commercial RO membrane. In addition, the positively charged PPy nanospheres immobilized in the PA layer endow the TFN membranes with improved biocidal activity, which was much higher than that of the pristine membrane. This study shows that incorporating organic nanospheres into the PA layer is an effective strategy to develop new TFN membranes with enhanced performance for advanced water purification.
KW - Interfacial polymerization
KW - Polypyrrole
KW - Reverse osmosis
KW - Thin film composite
KW - Thin film nanocomposite
UR - http://www.scopus.com/inward/record.url?scp=85049051947&partnerID=8YFLogxK
U2 - 10.1016/j.seppur.2018.06.057
DO - 10.1016/j.seppur.2018.06.057
M3 - Article
AN - SCOPUS:85049051947
SN - 1383-5866
VL - 207
SP - 222
EP - 230
JO - Separation and Purification Technology
JF - Separation and Purification Technology
ER -