化工新型材料

化工新型材料 ›› 2021, Vol. 49 ›› Issue (3) : 202-206. DOI: 10.19817/j.cnki.issn 1006-3536.2021.03.045

科学研究

银掺杂三氧化钨复合上转换材料的制备与表征

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Preparation and characterization of Ag-doped WO₃ composite upconversion material

Zhang Bo, Lu Chunhui, Gao Meixue, Liu Baojie, Liu Yang

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Received		Published
2019-12-16		2021-03-20
Issue Date	Revised Date
2021-05-10	2019-12-16

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摘要

WO₃本身在紫外光下具有很强的光催化性能,在可见光下能力较弱。为了改善其光催化性能,通过热解法和水热法分别制备出WO₃颗粒和WO₃纳米管基体,采用水热还原法制备出不同质量比的WO₃与Ag复合的光催化剂。以罗丹明B为目标降解物,对其光催化性能进行了测试。结果表明:热解法制备的WO₃与Ag的复合并未改善其光催化性能,水热法制备的WO₃纳米管在与银复合后一定程度上提高了WO₃的光催化效果。为了进一步提高其催化效率,把Ag/WO₃与上转换材料NaYF₄∶Yb,Er进行了复合,并对其进行了光催化实验。实验证明Ag/WO₃与上转换材料NaYF₄∶Yb,Er质量比为0.25时,在暗反应过程中罗丹明B浓度有明显的下降。通过实验表明与上转换材料NaYF4∶Yb,Er的复合使其具有了良好的吸附性能,在对处理环境污染起到了一定作用。

Abstract

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.

关键词

光催化 / 上转换 / 罗丹明B / 复合

Key words

photocatalysis / upconversion / rhodamine B / composite

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银掺杂三氧化钨复合上转换材料的制备与表征[J]. 化工新型材料, 2021, 49(3): 202-206 DOI:10.19817/j.cnki.issn 1006-3536.2021.03.045

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参考文献

原文顺序 | 出版日期 | 本文引用

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