Ionic liquid-assisted synthesis, characterization and photocatalytic properties of SnO microflowers with nanosheet subunits

Document Type : Original Research Paper


1 Department of Chemistry, Yadegar-e-Imam Khomeini (RAH) Shahre-rey Branch, Islamic Azad University, Tehran, Iran

2 Chemistry department, Yadegar-e Imam Khomeini (RAH) Shahre-rey, Islamic Azad University, Tehran, Iran



In this study, simple ionic liquid-assisted preparation of SnO microflowers with nanosheet subunits
under reflux condition without calcination were described. Samples were synthesized using 1-pentyl-
3-methylimidazolium bromide, [pmim]Br, as an ionic liquid in different molar ratio, sodium hydroxide
and Tin(II) chloride. The results show that SnO with high purity and uniform size distribution was
obtained using 1:4:4 molar ratios of SnCl2/NaOH/IL by simple reflux method and the ionic liquid
only acts as a suitable template. The characterization of the products was carried out by FT-IR, X-ray
powder diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy
(EDXS) and DRS techniques. Photodegradation of Remazol Black B (RBB) from the aqueous solution
was investigated by SnO nanosheets (93.48% dye removal). The rate of degradation of RBB in the
presence of SnO is distinctive by the pseudo-first-order kinetic model (R2 > 0.79).