Fast One-Pot Photosynthesis of Plasmonic Protein-Coated Silver/Silver Bromide Nanoparticles with Efficient Photocatalytic Performance

Autor(es)

Cruz, Geomar F. ^[1] ; Tofanello, Aryane ^[1] ; Araujo, Juscemacia N. ^[1] ; Nantes-Cardoso, Iseli L. ^[1] ; Ferreira, Fabio F. ^[1] ; Garcia, Wanius ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed ABC, Ctr Ciencias Nat & Humanas, Santo Andre, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Inorganic and Organometallic Polymers and Materials; v. 28, n. 5, p. 2056-2062, SEP 2018.
• Citações Web of Science: 1

Resumo

Photocatalysis is a promising method with great potential to solve several environmental challenges. Plasmonic Ag/AgBr nanoparticles (Ag/AgBr-NPs) are stable and highly efficient photocatalysts under visible light. Here, we reported for the first time the fast one-pot photosynthesis of stable protein-coated Ag/AgBr-NPs under blue light illumination. The photosynthesis was a simple process, carried out by equimolar mixing of Ag+ and Br- in the presence of protein, compatible with the green chemistry procedure. Electron microscopy showed that the Ag/AgBr-NPs were slightly heterogeneous in size and shape, and enveloped by a protein matrix responsible for colloidal stability. X-ray diffraction analysis showed that the Ag/AgBr-NPs were purely crystalline in nature. The content of metallic Ag-0 in the Ag/AgBr-NPs was easily controlled varying the ratio between Ag+ and Br- in the reaction. Plasmonic protein-coated Ag/AgBr-NPs showed photocatalytic activity for the degradation of methylene blue, which enhanced with the increase of metallic Ag-0 content, attributed to the synergistic effects among the plasmonic band, photosensibility of semiconductor and decrease in the recombination rate of the electron-hole pairs by the protein layer. (AU)

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