With the commercial TiO2 (Macklin P25) as the support,M/TiO2 (M=Ag,Au,Pd or Pt,the theoretical M weight percentage was 0.5wt%,respectively) photocatalysts were prepared using the polyvinyl pyrrolidone (PVP) or polyvinyl alcohol (PVA)-protected reduction methods.Physicochemical properties of the TiO2 and M/TiO2 samples were characterized by X-ray powder diffraction (XRD),ultraviolet visible diffuse reflection spectroscopy (UV-Vis DRS),photoluminescence (PL) spectrum analysis technology,and their photocatalytic activities were evaluated for the removal of methyl orange (MO) under visible-light illumination.It was found that the high visible-light-driven catalytic performance of the Pt/TiO2 sample was associated with its pure anatase crystal phase,strong visible light absorption performance,low bandgap energy (2.89eV) as well as low recombination rate of photogenerated electrons and holes.
Yang Huangen, Ran Xiaochun, Tan Jiawen, Zhou Xingling, Zhu Ligang, Qin Liqin
. Preparation of noble metal supported commercial TiO2 photocatalyst and its degradation performance for dye-containing wastewater[J]. New Chemical Materials, 2020
, 48(10)
: 135
-138
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.10.029
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