Soomro Faheeda, Memon Fida Hussain, Khan Muhammad Ali, Iqbal Muzaffar, Ibrar Aliya, Memon Ayaz Ali, Lim Jong Hwan, Choi Kyung Hyon, Thebo Khalid Hussain
Department of Human and Rehabilitation Sciences, Faculty of Education, Linguists and Sciences, The Begum Nusrat Bhutto Women University, Rohri Bypass, Sukkur 65200, Pakistan.
Department of Mechatronics Engineering, Jeju National University, Jeju 63243, Republic of Korea.
Membranes (Basel). 2023 Jan 4;13(1):64. doi: 10.3390/membranes13010064.
Two-dimensional graphene oxide (GO)-based lamellar membranes have been widely developed for desalination, water purification, gas separation, and pervaporation. However, membranes with a well-organized multilayer structure and controlled pore size remain a challenge. Herein, an easy and efficient method is used to fabricate MoO@GO and WO@GO nanocomposite membranes with controlled structure and interlayer spacing. Such membranes show good separation for salt and heavy metal ions due to the intensive stacking interaction and electrostatic attraction. The as-prepared composite membranes showed high rejection rates (˃70%) toward small metal ions such as sodium (Na) and magnesium (Mg) ions. In addition, both membranes also showed high rejection rates ˃99% for nickel (Ni) and lead (Pb) ions with good water permeability of 275 ± 10 L m h bar. We believe that our fabricated membranes will have a bright future in next generation desalination and water purification membranes.
基于二维氧化石墨烯（GO）的层状膜已被广泛应用于海水淡化、水净化、气体分离和渗透蒸发等领域。然而，制备具有有序多层结构和可控孔径的膜仍然是一个挑战。在此，我们采用一种简便高效的方法制备了具有可控结构和层间距的MoO@GO和WO@GO纳米复合膜。由于强烈的堆积相互作用和静电吸引作用，这类膜对盐和重金属离子表现出良好的分离性能。所制备的复合膜对钠（Na）和镁（Mg）等小金属离子具有较高的截留率（>70%）。此外，两种膜对镍（Ni）和铅（Pb）离子的截留率也均大于99%，且具有良好的水渗透性，为275±10 L m h bar。我们相信，我们制备的膜在下一代海水淡化和水净化膜领域将具有广阔的前景。
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