The main purpose of this article is to discuss a few advantages
of Cu (transition metal) doped SnO2
(Sn1 − xCuxO2−δ) bulk
nanoparticles that have been prepared by applying a simple and
reasonably priced technique solid-state reaction method. To analyze
especially, tunning of bandgap and other structural, morphological
properties of Cu-doped SnO2 materials are examined by
different innovative methods. Samples were characterized by XRD
which confirms that SnO2 has a rutile type
tetragonal-shaped structure that goes to the space group
P42/mnm (number 136). SEM images indicate
that SnO2 nanoparticles are inhomogeneous and densely
closed with each other and an average particle size is approx
225–430 nm. The TEM images indicate that grains are present in a
few cubic and spherical shapes. We observed grain size also
increased (20-90nm) when we doped Copper in SnO2
nanoparticles. UV-Vis spectroscopy inspected that the band gap of
(Sn1 − xCuxO2−δ) sample is
increased from 3.531eV to 3.701eV. XPS (X-ray Photoelectron
Spectroscopy) identifies the electronic state of Sn and Cu atoms
found to be 4+ and 2+ respectively. RAMAN
spectroscopy identifies only three vibrational modes, i.e.,
(A1g, B2g, and doubly degenerate
Eg) in pure and Cu-doped SnO2 nanomaterial
(Sn1 − xCuxO2−δ).