Visible-light driven photodegradation on Ag nanoparticle-embedded fullerene (C60) heterostructural microcubes

Chemosphere. 2020 Nov:258:127355. doi: 10.1016/j.chemosphere.2020.127355. Epub 2020 Jun 9.

Abstract

Three-dimensional Ag(I)-fullerene hybrid microcrystal is fabricated by AgNO3 assisted liquid-liquid interfacial precipitation, containing the abundant sp2-π-electron system. With a mild chemical reduction, it produces the massive Ag nanocluster/fullerene junctions, on which fullerene doubles role as the excellent electron acceptor and photon scavenger, enabling the Plasmon-driven catalytic reaction. Ag nanocluster employed alone could not perform this photocatalytic reaction, neither of fullerene (C60) crystal. It implicates that Ag-fullerene interface is a key to drive catalytic process. Relative to conventional TiO2 nanostructures, fullerene expands light absorption to most solar wavelength and possesses a tightened bandgap which intrinsically expedites the charge transfer and charge separation from coinage metals. Demonstrated by photodegradation of organic molecules, this Ag(I)-fullerene (C60) composite, consisted of a plethora of electron donor-acceptor dyads renders an additional member to photocatalyst family, potentially implemented for photo-electron conversion, water remedy and beyond.

Keywords: Ag-fullerene; Fullerene crystal; Nanocomposite; Photocatalytic reactions; Photodegradation.

MeSH terms

  • Catalysis
  • Fullerenes / chemistry*
  • Light
  • Metal Nanoparticles / chemistry*
  • Nanostructures / chemistry
  • Photolysis*
  • Silver / chemistry
  • Sunlight
  • Water

Substances

  • Fullerenes
  • Water
  • Silver