An ionic liquid route to prepare copper sulphide nanocrystals aiming at photocatalytic applications
authors Estrada, AC; Silva, FM; Soares, SF; Coutinho, JAP; Trindade, T
nationality International
journal RSC ADVANCES
keywords VISIBLE-LIGHT; SEMICONDUCTOR PHOTOCATALYSIS; STRUCTURAL-CHARACTERIZATION; SOLVOTHERMAL PROCESS; ASSISTED SYNTHESIS; CU2S NANOCRYSTALS; ORGANIC POLLUTANT; METAL SULFIDES; THIN-FILMS; CUS
abstract Copper sulphide crystallizes in a variety of phases that exhibit distinct optical properties including different optical band gaps in the visible region. The crystalline phases are associated with unique properties shown by semiconductor nanocrystals that could be exploited to produce new photocatalysts with tuned optical behavior. This research reports on the use of ionic liquids as a reaction medium to produce copper sulphide nanocrystals whose crystalline phase depends on the synthesis conditions. Noteworthy, these solvents allow the production of water dispersible copper sulphides following the thermal treatment of Cu(II) alkyldithiocarbamates complexes, used here as single-molecule precursors, thus improving their potential for heterogeneous photocatalysis in the aqueous phase. Finally, the ensuing copper sulphides have been preliminarily assessed for their photocatalytic activity in the degradation of rhodamine B (RhB). The results indicate that the ionic liquid route described here has an impact on the copper sulphides produced and thereby on their performance as photocatalysts.
publisher ROYAL SOC CHEMISTRY
issn 2046-2069
year published 2016
volume 6
issue 41
beginning page 34521
ending page 34528
digital object identifier (doi) 10.1039/c5ra27569e
web of science category Chemistry, Multidisciplinary
subject category Chemistry
unique article identifier WOS:000374049700052
  ciceco authors
  impact metrics
times cited (wos core): 3
journal impact factor (jcr 2016): 3.108
5 year journal impact factor (jcr 2016): 3.257
category normalized journal impact factor percentile (jcr 2016): 64.759
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