Ag-Ag2S/reduced graphene oxide hybrids used as long-wave UV radiation emitting nanocomposites

Abstract

We report a facile thermal decomposition approach to synthesize Ag-Ag2S/reduced graphene oxide (Ag-Ag2S/rGO), the Ag-Ag2S nanoparticles uniformly dispersed on reduced graphene oxide with diameters of 10-20 nm. The photoluminescence spectra of Ag-Ag2S/rGO showed two obvious emission peaks at 327 and 339 nm with the excitation wavelength at 287 nm. Compared with Ag-Ag2S heterostructured clusters with two peaks at 407 and 430 nm, it showed a big blue shift and higher intensity, which makes it a novel candidate for long-wave UV radiation emitting nanocomposite.

The Optical Properties of β-Cyclodextrin-Assisted Synthesize Worm-Like Ag₂S by One Step Hydrothermal Method

“…6c, the PL spectrum shows an emission peak centered at ~403 nm in wavelength (λex = 325 nm), as a contrast, the sample prepared without the addition of a template shows an emission peak centered at ~427 nm in wavelength (λex = 325nm). Compared with the Ag 2 S nanomaterials are reported in the literature, the band gap of the obvious blue shift [34,35], according to the literature, which may be attributed to its smaller size of Ag 2 S [36,37], the PL intensity was not very strong, which might be attributed to the trapped states [38].…”

A general method for boosting the supercapacitor performance of graphitic carbon nitride/graphene hybrids

“…Graphene oxide was manufactured by oxidation of natural graphite powder via improved Hummer's method. 18,19 Detailed process can be found in ESI. †…”

Gas-phase synthesis of hybrid nanostructured materials

“…There are two major synthetic approaches for production of nanostructured materials: liquid/solution phase (e.g. hydrothermal) 15,23,24 and gas phase (e.g. chemical vapour deposition (CVD) and physical vapour deposition (PVD)).…”

“…We have previously demonstrated deposition of TYPE I structure Pt, Pd or Au NPs/WO x NRs (2 < x < 3) and PdO/WO 3 NRs via a single-step using aerosol assisted-CVD (AACVD) process. 24,25,34,39,40 However, the compatibility of various precursors and their respective deposition parameters limited the range of size and structures that could be produced in a single-step. In addition the tungsten oxide NRs synthesized by AACVD are typically substoichiometric (WO x where 2 < x < 3), 42,43 with annealing in air at 500°C required to obtain fully oxidized WO 3 .…”