膜
海水淡化
石墨烯
材料科学
纳米技术
化学工程
纳米材料
相位反转
罗丹明B
海水淡化
拉曼光谱
反渗透
化学
生物化学
物理
光学
光催化
工程类
催化作用
作者
P. Sai Kiran,Satish Indupuri,K. Vijay Kumar,Aminul Islam,Pushpender Singh,Chintham Satish,Anup Kumar Keshri
出处
期刊:Desalination
[Elsevier]
日期:2024-04-01
卷期号:575: 117291-117291
被引量:1
标识
DOI:10.1016/j.desal.2024.117291
摘要
In recent years, graphene-based membranes are extensively explored for desalination process to fulfil the pure water scarcity. Still, there is a noticeable gap in the research on a technique that simultaneously deposits a membrane and also generates pores in the flake of membrane. In this work, we demonstrated a one-step and scalable protocol i.e. a conventional atmospheric plasma spraying (APS) to fabricate a graphene nanoplatelets (GNP) membrane for water desalination application. Various characterization tools: FE-SEM, Raman, and TEM etc. utilized to evaluate the deposition of GNPs flakes and induced sub-nanometer pores in the large area GNP membrane. Plasma-sprayed GNP membrane showed impressive desalination performance in terms of water flux, salt rejection, and permeability around ~67 Lm−2 h−1, ~99 %, and ~ 115 Lm−2h−1bar−1 respectively at 0.6 bar of transmembrane pressure (TMP). This performance of the GNP membrane was attributed to the critical role of graphene in terms of its structures, including induced pores within graphene sheets and its functions. Our deposited GNP membrane is cost-effective and showed the applicability of conventional plasma spraying in the design of nanomaterials-based membranes for various water purification protocols.
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