Tungsten oxide(WO3) has strong photocatalytic activity under ultraviolet light and weak photocatalytic activity under visible light.In order to improve its photocatalytic performance,WO3 particles and WO3 nanotube matrix were prepared by pyrolysis and hydrothermal method respectively,and WO3 and Ag composite photocatalysts with different mass ratios were prepared by hydrothermal reduction method.The photocatalytic properties of rhodamine B degradation products were tested.The results showed that the photocatalytic activity of WO3 was not improved by the combination of Ag and WO3 prepared by pyrolysis.The photocatalytic activity of WO3 nanotubes prepared by hydrothermal method was improved to some extent by the combination of Ag and WO3.In order to further improve the utilization of visible light,Ag/WO3 was compounded with up-conversion materials NaYF4∶Yb and Er,and photocatalytic experiments were carried out.The results shown that the mass concentration of Ag/WO3 and upconversion material NaYF4∶Yb and Er is 0.25,and the concentration of rhodamine B decreased obviously during dark reaction.The results shown that the combination of NaYF4∶Yb and Er had good adsorption performance,and played a certain role in the treatment of environmental pollution.
Zhang Bo, Lu Chunhui, Gao Meixue, Liu Baojie, Liu Yang
. Preparation and characterization of Ag-doped WO3 composite upconversion material[J]. New Chemical Materials, 2021
, 49(3)
: 202
-206
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.03.045
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