Functionalised Plasma Polymer Nano-thin Films: Potential Application in Water Purification

In recent years, surface functionalised materials have attracted considerable interest as adsorbent agents in water purification. Although surface modification of materials using wet chemistry routes has previously been employed for water purification, applying plasma polymerizations technology in this field appears to be a more cost-efficient and effective alternative. In this novel technology, an organic monomer gas containing specific functional groups is excited into the plasma state within a rotating plasma reactor containing substrate particles. The monomer is fragmented into active species via plasma state interactions and is deposited on all surfaces within the reaction chamber. In water, some functional groups are negatively charged, while others are charged positively. Therefore, by choosing the appropriate functional groups for polymerization, both anionic and cationic pollutants can be removed via electrostatic attractions. This article begins with reviewing the basic concepts of nano-thin film manufacturing using plasma polymerization technology and continues with reviewing the potential application of this technology in developing a new class of adsorbent materials for water purification.

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School of Advanced Manufacturing and Mechanical Engineering ، Mawson Institute ، University of South Australia ، Adelaide ، Australia