期刊
RARE METALS
卷 40, 期 3, 页码 537-546出版社
NONFERROUS METALS SOC CHINA
DOI: 10.1007/s12598-019-01283-6
关键词
Cd-doped ZnO; Precipitation method; Photocatalysis
ZnO particles doped with Cd were successfully synthesized using a precipitation method, and characterized by multiple techniques. The study found that Cd doping increased the crystallite size and photocatalytic activity of ZnO, with ZnO doped with 3 mol% Cd showing the best performance in degrading methylene blue.
ZnO particles doped with 0 mol%-5 mol% Cd dopant were successfully synthesized by a precipitation method. The as-synthesized products were characterized by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), X-ray diffraction (XRD), photoluminescence (PL) spectroscopy, Raman spectroscopy, scanning electron microscopy (SEM) coupled with an energy-dispersive X-ray (EDX) spectroscopy and transmission electron microscopy (TEM). The precursors showed weight loss at 35-700 degrees C caused by phase transformation and evaporation processes. The as-synthesized products were specified as hexagonal wurtzite ZnO. The crystallite size of ZnO samples doped with 0 mol%-5 mol% Cd gradually increased with the increase in Cd content. The photocatalytic activities of 0 mol%-5 mol% Cd-doped ZnO samples were evaluated through photodecolorization of methylene blue (MB) under ultraviolet (UV) radiation. In this research, ZnO doped with 3 mol% Cd shows the best photocatalytic activity in degrading of MB molecules as much as 89% within 240 min.
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