Potential utility of graphene-based nano spinel ferrites as adsorbent and photocatalyst for removing organic/inorganic contaminants from aqueous solutions: A mini review. (April 2019)

• Record Type: Journal Article
• Authors: Park, Chang Min; Kim, Young Mo; Kim, Ki-Hyun; Wang, Dengjun; Su, Chunming; Yoon, Yeomin
• Is Part Of: Chemosphere. Volume 221(2019)
• Page Start: 392
• Page End: 402
• Publication Date: 2019-04
• Subjects: Graphene -- Nano spinel ferrite -- Adsorbents -- Photocatalysts -- Water treatment; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2019.01.063
• Languages: English
• ISSNs: 0045-6535

Abstract

Abstract: Toxic substances such as heavy metals or persistent organic pollutants raise global environmental concerns. Thus, diverse water decontamination approaches using nano-adsorbents and/or photocatalysts based on nanotechnology are being developed. Particularly, many studies have examined the removal of organic and inorganic contaminants with novel graphene-based nano spinel ferrites (GNSFs) as potential cost-effective alternatives to traditionally used materials, owing to their enhanced physical and chemical properties. The introduction of magnetic spinel ferrites into 2-D graphene-family nanomaterials to form GNSFs brings various benefits such as inhibited particle agglomeration, enhanced active surface area, and easier magnetic separation for reuse, making the GNSFs highly efficient and eco-friendly materials. Here, we present a short review on the state-of-the-art progresses on developments of GNSFs, as well as their potential application for removing several recalcitrant contaminants including organic dyes, antibiotics, and heavy metal ions. Particularly, the mechanisms involved in the adsorptive and photocatalytic degradation are thoroughly reviewed, and the reusability of the GNSFs is also highlighted. This review concludes that the GNSFs hold great potential in remediating contaminated aquatic environments. Further studies are needed for their practical and large-scale applications. Highlights: Graphene-based nano spinel ferrites were reviewed as adsorbents and photocatalysts. Potential uses in removing dyes, antibiotics, and heavy metals from water. GNSFs showed good performance and reusability with easy magnetic separation. Adsorption and photocatalysis mechanisms were discussed.