Journal
CHEMOSPHERE
Volume 236, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2019.124396
Keywords
Palygorskite; Ag nanoparticles; Thin film nanocomposite; Antibacterial; Antifouling
Categories
Funding
- National Key Research and Development Program of China [2018YFC040800202]
- National Natural Science Foundation of China [21878177, 21773219]
- Qingdao National Laboratory for Marine Science and Technology [QNLM2016ORP0308]
- Shandong province key research and development plan (public interest category) project [2017GSF17102]
- Tai Shan Scholar Foundation [ts201511003]
Ask authors/readers for more resources
Palygorskite (Pal) is a highly hydrophilic clay mineral with tubular structure and high aspect ratio, which facilitates the attachment of nanoparticles to their surface. It has become a promising new membrane preparation additive due to its lotus root like tubular structure, low price and environmental friendliness. Silver nanoparticles (AgNPs) have excellent antibacterial ability, and their incorporation into the membrane can significantly improve the bacteriostasis of the membrane. Herein, Pal was coated by polydopamine (PDA), which acted as both the adhesive and reducing agent for AgNPs. The incorporation of the Pal/Ag nanocomposite resulted in a thin polyamide (PA) layer with rough surface morphology, which facilitated the improvement of membrane permeability. Furthermore, the Pal's parallel tubes with a 0.37 x 0.63 nm(2) cross-sectional area provided nanochannels allowing fast pass through of water molecules. The as-prepared TFN-7.SPal/Ag membrane exhibited a permeate flux of 39.9 LMH at 16 bar, which was 1.6 times as high as that of the TFC membrane, accompanied with an acceptable NaCl rejection of 98.3%. Besides, antibacterial tests demonstrated that the TFN membrane presented excellent antibacterial performance against Escherichia coli (98.0%). (C) 2019 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available