2015) 'The anti-biofouling properties of thin-lm composite nanoltration membranes grafted with biogenic silver nanoparticles. ', Desalination., Further information on publisher's website: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. ABSTRACT:Biofouling is still one of the most challenging issues of nanofiltration.One of the practical strategies to reduce biofouling is to develop novel anti-biofouling membranes. Herein, biogenic silver nanoparticles (BioAg 0 -6) with the averaged diameter of only 6nm were firstly grafted on the surface of polyamide NF membrane.The effect of grafted BioAg 0 -6 on the performance of thin-film composite (TFC) NF membranes was systematically investigated with a comparison to the grafted chemical AgNPs. BioAg 0 -6 grafted membrane (TFC-S-BioAg) increased the hydrophilicity of the TFC membrane and water permeability, while maintaining the relatively high salt rejection. The result of silver leaching experiment indicated that the grafted BioAg 0 -6 had a better stability on the membranes, the ratio of remained silver in the TFC-S-BioAg membrane was 95%, after soaked in pure water for 50 days. After 4 months immersion, the rejection of TFC-S-BioAg membrane remained more than 90% of initial rejection. The results of disk diffusion test revealed that both of TFC-S-BioAg membrane and TFC-S-ChemAg membrane showed effective anti-bacterial ability to inhibit P.aeruginosa and E.coli growth, the TFC-S-BioAg membrane showed more excellent and longer lasting antibacterial property. Therefore, BioAg 0 -6 grafed TFC membranes could be potential as an effective strategy to decrease biofouling in nanofiltration process.

TEMPO (2,2,6,6‐tetramethylpiperidine‐1‐oxyl radical)‐mediated oxidized cellulose nanofibers (TOCNFs), which are derived from abundantly available wood biomass, possess uniform and ultrafine diameters of 3–10 nm and high aspect ratios, and are functionalized with carboxyl groups. The fabrication process of TOCNFs is more environmentally friendly than that of other types of cellulose, such as microfibrillated cellulose (MFC) and cellulose nanocrystals (CNCs), and TOCNFs possess a more uniform and ultrafine diameter. In recent years, TOCNF‐based adsorbents, nanocomposites, and membranes have been studied extensively in various fields, such as environmental remediation, energy, and smart materials. This review summarizes the recent advances in the applications of TOCNFs in the abovementioned fields. In particular, the preparation, adsorption ability, and removal efficiency of TOCNF‐based absorbents, separation performance of various kinds of TOCNF‐based membranes, wide applications of TOCNFs in energy storage and conversion, and TOCNF‐based smart materials are discussed. The beneficial role of TOCNFs in the abovementioned applications is highlighted, including their low environmental impact, high aspect ratio, high strength, ability to be functionalized, and renewability. It is believed that this timely review will facilitate further research on the innovation and applications of TOCNFs in fields such as environmental remediation, energy, and smart materials.

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