Photoresponse of surface modified graphene oxide by green synthesized silver and gold nanoparticles

Mistry, Hiral M.; Deshpande, M. P.; Hirpara, Anilkumar B.; Suchak, Nidhishree M.; Chaki, Sunil H.; Pandya, Swati; Valand, Jignesh; Bhatt, S. J.

doi:10.1016/j.apsusc.2023.157583

Cited by 14 publications

(1 citation statement)

References 72 publications

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“…In previous works, enormous attention has been developed for producing Ag NPs’ carriers, and a wide variety of carrier materials have emerged, including silica, graphene oxide (GO), , porous carbon materials, , and organic/inorganic polymeric micro/nanoparticles . In one study, You et al successfully prepared Ag NPs on the surface of negatively charged alginate microspheres for the catalytic reduction of 4-nitrophenol.…”

Section: Introductionmentioning

confidence: 99%

Tannin-Assisted Synthesis of Nanocomposites Loaded with Silver Nanoparticles and Their Multifunctional Applications

Xia,

Jiang,

et al. 2023

Biomacromolecules

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Nanocomposites have been widely used in many important areas due to their particular physical/chemical properties; however, just though a simple technology, endowing multiple functions into a single nanomaterial for realizing their multifunctional applications is still a challenge. Here, we report a robust method for the facile synthesis of Ag-based multifunctional nanocomposites via using tannin-coated phenol–formaldehyde resin nanospheres (TA-PFRN) as silver nanoparticle (Ag NP) carriers. The thickness of the tannin coating is readily tuned from 50 to 320 nm by regulating the concentration of tannin added. Under the optimal conditions, the TA-PFRN has a 23.8 wt % of Ag NPs loading capacity with only 17.2 nm Ag NP layers. Consequently, the novel TA-PFRN@Ag nanocomposites possess multiple functions and integrated characteristics. As catalysts, the catalytic efficiency of TA-PFRN@Ag is nearly 6 times higher than that of the PFRN@Ag. As highly effective free radical initiators, TA-PFRN@Ag nanocomposites can trigger ultrafast acrylic acid (AA)/acrylamide (AM) polymerization at room temperature (in only a few minutes). As nano-reinforced fillers, the addition of 0.04 wt % nanocomposites can improve the tensile strength of PVA film from 60 to 153.2 MPa. In addition, the nanocomposites can also serve as antibacterial agents, efficiently inhibiting the growth of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus); as antiultraviolet agents, the presence of TA-PFRN@Ag nanocomposites endows the film/hydrogel materials excellent ultraviolet (UV) shielding. This work provides a novel strategy for the green synthesis of Ag-based multifunctional nanocomposites that show promising applications in catalysis, nanomaterials, and biomedicine.

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