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Concurrent photocatalytic degradation and filtration with bi-plasmonic TiO2 for wastewater treatment

Anvari, A ; Sharif University of Technology | 2021

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  1. Type of Document: Article
  2. DOI: 10.1049/mna2.12016
  3. Publisher: John Wiley and Sons Inc , 2021
  4. Abstract:
  5. A new photocatalytic filtration membrane was prepared by grafting of Ag–Au bi-plasmonic shell-on TiO2@Fe3O4 nanoparticles as a magnetically-separable heterogeneous photocatalyst to a poly acrylic acid-modified cellulose acetate membrane for decomposition and removal of methyl orange as a model pollutant from textile wastewater samples. Eight photocatalysts including five Au NPs-modified TiO2@Fe3O4 NPs and three Ag-Au bi-plasmonic NPs-decorated TiO2@Fe3O4 NPs with different shell thickness were synthesized and characterized by TEM, UV–vis, and SEM techniques and their photocatalytic activity was assessed using two radiation sources. After selection of optimum photocatalyst and modification of cellulose acetate membrane, the photodegradation of methyl orange was evaluated in a dead-end membrane reactor using the prepared membrane. The flux performance, antifouling property and pollutant removal efficiency of the membrane were evaluated using textile wastewater samples. It was demonstrated that the prepared membrane reactor is able to produce cleaner water with more stable flux performance and good antifouling property. © 2021 The Authors. Micro & Nano Letters published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology
  6. Keywords:
  7. Azo dyes ; Bioreactors ; Decomposition ; Iron alloys ; Iron metallography ; Magnetite ; Microfiltration ; Oxide minerals ; Photocatalytic activity ; Plasmonic nanoparticles ; Plasmonics ; Silver alloys ; Silver metallography ; Textiles ; TiO2 nanoparticles ; Titanium dioxide ; Volatile fatty acids ; Wastewater treatment ; Water treatment ; Antifouling property ; Cellulose acetate membrane ; Fe3O4 nanoparticles ; Filtration membranes ; Heterogeneous photocatalysts ; Magnetically separable ; Photo catalytic degradation ; Pollutant removal efficiency ; Gold metallography ; Antifouling agent ; Core shell nanoparticle ; Deionized water ; Ferrous chloride ; Gold nanoparticle ; Iron nanoparticle ; Nanocomposite ; Nanoribbon ; Silver nanoparticle ; Titanium dioxide nanoparticle ; Alkalinity ; Aqueous solution ; Biocompatibility ; Colloid ; Conjugation ; Degradation ; Filtration ; Letter ; Membrane technology ; Oxidation ; Photocatalysis ; Photodegradation ; Recycling ; Reduction (chemistry) ; Synthesis ; Ultraviolet visible spectroscopy ; Waste water management ; Water pollutant ; Azo Compounds ; Cellulose ; Citrus fruits ; Iron oxides ; Membranes ; Pollution
  8. Source: Micro and Nano Letters ; Volume 16, Issue 3 , 2021 , Pages 194-202 ; 17500443 (ISSN)
  9. URL: https://ietresearch.onlinelibrary.wiley.com/doi/10.1049/mna2.12016