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Sökning: onr:"swepub:oai:DiVA.org:hh-40639" > Graphene-based plas...

Graphene-based plasmonic nanocomposites for highly enhanced solar-driven photocatalytic activities

Adam, Rania E., (författare)
Department of Sciences and Technology, Linköping University, Norrköping, Sweden
Chalangar, Ebrahim, PhD student, 1984- (författare)
Högskolan i Halmstad, Halmstad Embedded and Intelligent Systems Research (EIS), Högskolan i Halmstad, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS), Department of Sciences and Technology, Linköping University, Norrköping, Sweden
Pirhashemi, Mahsa, (författare)
Department of Chemistry, Faculty of Sciences, University of Mohaghegh Ardabili, Ardabil, Iran
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Pozina, Galia, (författare)
Department of Physics, Chemistry, and Biology (IFM), Linköping University, Linköping, Sweden
Liu, Xianjie, (författare)
Department of Physics, Chemistry, and Biology (IFM), Linköping University, Linköping, Sweden
Palisaitis, Justinas, (författare)
Department of Physics, Chemistry, and Biology (IFM), Linköping University, Linköping, Sweden
Pettersson, Håkan, 1962- (författare)
Högskolan i Halmstad, Halmstad Embedded and Intelligent Systems Research (EIS), Högskolan i Halmstad, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS), Department of Sciences and Technology, Linköping University, Norrköping, Sweden & Solid State Physics and NanoLund, Lund University, Lund, Sweden
Willander, Magnus, (författare)
Department of Sciences and Technology, Linköping University, Norrköping, Sweden
Nur, Omer, (författare)
Department of Sciences and Technology, Linköping University, Norrköping, Sweden
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2019
Engelska.
Ingår i: RSC Advances. - Cambridge : Royal Society of Chemistry. - 2046-2069 .- 2046-2069. ; 9:52, s. 30585-30598
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • <p>High-efficiency photocatalysts are crucial for the removal of organic pollutants and environmental sustainability. In the present work, we report on a new low-temperature hydrothermal chemical method, assisted by ultrasonication, to synthesize disruptive plasmonic ZnO/graphene/Ag/AgI nanocomposites for solar-driven photocatalysis. The plasmonic nanocomposites were investigated by a wide range of characterization techniques, confirming successful formation of photocatalysts with excellent degradation efficiency. Using Congo red as a model dye molecule, our experimental results demonstrated a photocatalytic reactivity exceeding 90% efficiency after one hour simulated solar irradiation. The significantly enhanced degradation efficiency is attributed to improved electronic properties of the nanocomposites by hybridization of the graphene and to the addition of Ag/AgI which generates a strong surface plasmon resonance effect in the metallic silver further improving the photocatalytic activity and stability under solar irradiation. Scavenger experiments suggest that superoxide and hydroxyl radicals are responsible for the photodegradation of Congo red. Our findings are important for the fundamental understanding of the photocatalytic mechanism of ZnO/graphene/Ag/AgI nanocomposites and can lead to further development of novel efficient photocatalyst materials. © 2019 Elsevier B.V.</p>

Ämnesord

NATURVETENSKAP  -- Kemi -- Materialkemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Materials Chemistry (hsv//eng)

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