Improved Air-assisted Surface Modification of Ptfe Hollow Fiber Membrane Via Polydopamine Incorporated Zinc Oxide Nanoparticles for Water Purification

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F22%3A00010170" target="_blank" >RIV/46747885:24220/22:00010170 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/46747885:24620/22:00010170

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Improved Air-assisted Surface Modification of Ptfe Hollow Fiber Membrane Via Polydopamine Incorporated Zinc Oxide Nanoparticles for Water Purification

Popis výsledku v původním jazyce

Owing to the comparably higher chemical, thermal and mechanical properties of the polytetrafluoroethylene (PTFE) hollow fiber (HF) membranes, it contains a potential capability to widely serve for water application1. However, the hydrophobic nature of PTFE HF membranes makes it difficult to be compatible with most surface modification techniques. As it does, it attracts adsorption of prevalent foulants in a way that contributes to the pore blockage and inefficient working of the membrane. In this work, an air-assisted method was used to improve the surface polymerization of the dopamine hydrochloride incorporated with zinc oxide (ZnO) nanoparticles (NP) on the outer surface of the PTFE HF membrane and enhance the antifouling property against bovine serum albumin (BSA) adsorption. SEM images showed the time and air-assist dependency of the polydopamine (PDA) growth on the PTFE HF membrane. Contact angle results showed that the membrane hydrophilicity could be tuned by harnessing PDA deposition time and aeration; hence, the contact angle of the PTFE HF membrane decreased from around 120° to 0°, followed by increasing the PDA deposition time to 24h (while aerated). The modified membranes improved flux recovery ratio (FRR) for BSA separation, reducing the total fouling ratio (Rt) and irreversible fouling ratio (Rir) and increasing the reversible fouling ratio (Rr), (Table 1). These results demonstrated the desirable separation and antifouling properties of the surface-modified PTFE HF membranes developed by improved air-assisted PDA coating incorporated with ZnO NP.

Název v anglickém jazyce

Improved Air-assisted Surface Modification of Ptfe Hollow Fiber Membrane Via Polydopamine Incorporated Zinc Oxide Nanoparticles for Water Purification

Popis výsledku anglicky

Owing to the comparably higher chemical, thermal and mechanical properties of the polytetrafluoroethylene (PTFE) hollow fiber (HF) membranes, it contains a potential capability to widely serve for water application1. However, the hydrophobic nature of PTFE HF membranes makes it difficult to be compatible with most surface modification techniques. As it does, it attracts adsorption of prevalent foulants in a way that contributes to the pore blockage and inefficient working of the membrane. In this work, an air-assisted method was used to improve the surface polymerization of the dopamine hydrochloride incorporated with zinc oxide (ZnO) nanoparticles (NP) on the outer surface of the PTFE HF membrane and enhance the antifouling property against bovine serum albumin (BSA) adsorption. SEM images showed the time and air-assist dependency of the polydopamine (PDA) growth on the PTFE HF membrane. Contact angle results showed that the membrane hydrophilicity could be tuned by harnessing PDA deposition time and aeration; hence, the contact angle of the PTFE HF membrane decreased from around 120° to 0°, followed by increasing the PDA deposition time to 24h (while aerated). The modified membranes improved flux recovery ratio (FRR) for BSA separation, reducing the total fouling ratio (Rt) and irreversible fouling ratio (Rir) and increasing the reversible fouling ratio (Rr), (Table 1). These results demonstrated the desirable separation and antifouling properties of the surface-modified PTFE HF membranes developed by improved air-assisted PDA coating incorporated with ZnO NP.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10400 - Chemical sciences

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů