TiO2/CDs modified thin-film nanocomposite polyamide membrane for simultaneous enhancement of antifouling and chlorine-resistance performance

Vahid Vatanpour; Shadi Paziresh; Seyed Ali Naziri Mehrabani; Solmaz Feizpoor; Aziz Habibi-Yangjeh; Ismail Koyuncu

doi:10.1016/j.desal.2021.115506

TiO₂/CDs modified thin-film nanocomposite polyamide membrane for simultaneous enhancement of antifouling and chlorine-resistance performance

Vahid Vatanpour^*
, Shadi Paziresh
, Seyed Ali Naziri Mehrabani
, Solmaz Feizpoor
, Aziz Habibi-Yangjeh
, Ismail Koyuncu

^*Corresponding author for this work

Kharazmi University
Istanbul Technical University
University of Mohaghegh Ardebili

Research output: Contribution to journal › Article › peer-review

84 Citations (Scopus)

Abstract

In this study, a titanium dioxide/carbon dots (TiO₂/CDs) hydrophilic nanocomposite photocatalyst with different contents was embedded in the polyamide layer of reverse osmosis (RO) membrane via interfacial polymerization to increase desalination performance and antifouling properties. The modified membranes showed smoother surfaces with reduced contact angles, causing to improve membrane fouling resistance. TiO₂/CDs nanocomposite, due to its photocatalytic activity, showed more flux recovery ratio (FRR) after irradiation of UV light during the washing process. The FRR was enhanced from 94.4 to 97.1% for 0.01 wt% TiO₂/CDs RO membrane by UV irradiation. The hydrophilic functional groups with negative charge increased the desalination efficiency of the modified membranes (99.2% NaCl rejection for 0.01 wt% TiO₂/CDs membrane). The membrane containing 0.01 wt% TiO₂/CDs presented the highest pure water and NaCl solution flux of (59.6 and 54.6 L·m⁻²·h⁻¹) at 15 bar, respectively. In addition, the used nanoparticles improved the chlorine resistance of the membranes. As a result, TiO₂/CDs nanocomposite with little amounts could be applied as a suitable nanofiller to increase the permeability, antifouling properties, and chlorine resistance for RO membrane modification.

Original language	English
Article number	115506
Journal	Desalination
Volume	525
DOIs	https://doi.org/10.1016/j.desal.2021.115506
Publication status	Published - 1 Mar 2022

Bibliographical note

Publisher Copyright:
© 2021 Elsevier B.V.

Funding

The authors thank the Istanbul Technical University (ITU, Turkey), the Kharazmi University (KHU, Iran), and the University of Mohaghegh Ardabili (UMA, Iran) for all the support provided.

Funders
Kharazmi University
University of Mohaghegh Ardabili
Istanbul Teknik Üniversitesi

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 6 Clean Water and Sanitation

Keywords

Chlorine resistance
Nanofiller
PSf support
TFC-RO membrane
TiO/CDs nanocomposite

Access to Document

10.1016/j.desal.2021.115506

Cite this

@article{a53f335a2b434df29e193819f131e620,

title = "TiO2/CDs modified thin-film nanocomposite polyamide membrane for simultaneous enhancement of antifouling and chlorine-resistance performance",

abstract = "In this study, a titanium dioxide/carbon dots (TiO2/CDs) hydrophilic nanocomposite photocatalyst with different contents was embedded in the polyamide layer of reverse osmosis (RO) membrane via interfacial polymerization to increase desalination performance and antifouling properties. The modified membranes showed smoother surfaces with reduced contact angles, causing to improve membrane fouling resistance. TiO2/CDs nanocomposite, due to its photocatalytic activity, showed more flux recovery ratio (FRR) after irradiation of UV light during the washing process. The FRR was enhanced from 94.4 to 97.1\% for 0.01 wt\% TiO2/CDs RO membrane by UV irradiation. The hydrophilic functional groups with negative charge increased the desalination efficiency of the modified membranes (99.2\% NaCl rejection for 0.01 wt\% TiO2/CDs membrane). The membrane containing 0.01 wt\% TiO2/CDs presented the highest pure water and NaCl solution flux of (59.6 and 54.6 L·m−2·h−1) at 15 bar, respectively. In addition, the used nanoparticles improved the chlorine resistance of the membranes. As a result, TiO2/CDs nanocomposite with little amounts could be applied as a suitable nanofiller to increase the permeability, antifouling properties, and chlorine resistance for RO membrane modification.",

keywords = "Chlorine resistance, Nanofiller, PSf support, TFC-RO membrane, TiO/CDs nanocomposite",

author = "Vahid Vatanpour and Shadi Paziresh and \{Naziri Mehrabani\}, \{Seyed Ali\} and Solmaz Feizpoor and Aziz Habibi-Yangjeh and Ismail Koyuncu",

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doi = "10.1016/j.desal.2021.115506",

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T1 - TiO2/CDs modified thin-film nanocomposite polyamide membrane for simultaneous enhancement of antifouling and chlorine-resistance performance

AU - Vatanpour, Vahid

AU - Paziresh, Shadi

AU - Naziri Mehrabani, Seyed Ali

AU - Feizpoor, Solmaz

AU - Habibi-Yangjeh, Aziz

AU - Koyuncu, Ismail

PY - 2022/3/1

Y1 - 2022/3/1

N2 - In this study, a titanium dioxide/carbon dots (TiO2/CDs) hydrophilic nanocomposite photocatalyst with different contents was embedded in the polyamide layer of reverse osmosis (RO) membrane via interfacial polymerization to increase desalination performance and antifouling properties. The modified membranes showed smoother surfaces with reduced contact angles, causing to improve membrane fouling resistance. TiO2/CDs nanocomposite, due to its photocatalytic activity, showed more flux recovery ratio (FRR) after irradiation of UV light during the washing process. The FRR was enhanced from 94.4 to 97.1% for 0.01 wt% TiO2/CDs RO membrane by UV irradiation. The hydrophilic functional groups with negative charge increased the desalination efficiency of the modified membranes (99.2% NaCl rejection for 0.01 wt% TiO2/CDs membrane). The membrane containing 0.01 wt% TiO2/CDs presented the highest pure water and NaCl solution flux of (59.6 and 54.6 L·m−2·h−1) at 15 bar, respectively. In addition, the used nanoparticles improved the chlorine resistance of the membranes. As a result, TiO2/CDs nanocomposite with little amounts could be applied as a suitable nanofiller to increase the permeability, antifouling properties, and chlorine resistance for RO membrane modification.

AB - In this study, a titanium dioxide/carbon dots (TiO2/CDs) hydrophilic nanocomposite photocatalyst with different contents was embedded in the polyamide layer of reverse osmosis (RO) membrane via interfacial polymerization to increase desalination performance and antifouling properties. The modified membranes showed smoother surfaces with reduced contact angles, causing to improve membrane fouling resistance. TiO2/CDs nanocomposite, due to its photocatalytic activity, showed more flux recovery ratio (FRR) after irradiation of UV light during the washing process. The FRR was enhanced from 94.4 to 97.1% for 0.01 wt% TiO2/CDs RO membrane by UV irradiation. The hydrophilic functional groups with negative charge increased the desalination efficiency of the modified membranes (99.2% NaCl rejection for 0.01 wt% TiO2/CDs membrane). The membrane containing 0.01 wt% TiO2/CDs presented the highest pure water and NaCl solution flux of (59.6 and 54.6 L·m−2·h−1) at 15 bar, respectively. In addition, the used nanoparticles improved the chlorine resistance of the membranes. As a result, TiO2/CDs nanocomposite with little amounts could be applied as a suitable nanofiller to increase the permeability, antifouling properties, and chlorine resistance for RO membrane modification.

KW - Chlorine resistance

KW - Nanofiller

KW - PSf support

KW - TFC-RO membrane

KW - TiO/CDs nanocomposite

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