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WO3/g-C3N4异质光催化剂的合成及其对染料废水的降解

作者:时间:2020-05-12点击数:

全文下载:  202002004.pdf

 

文章编号: 1672-6987(2020)02-0035-08; DOI: 10.16351/j.1672-6987.2020.02.004

 

李龙飞, 杜芳林*

(青岛科技大学 材料科学与工程学院,山东 青岛 266042)

 

摘要: 以尿素为原料,通过热聚合制备石墨相氮化碳(g-C3N4),以钨酸钠、盐酸、草酸为原料,采用沉淀法制备片状氧化钨(WO3),通过混合制备WO3/g-C3N4复合材料。结果表明:制备出了良好分散的g-C3N4负载WO3纳米片结构;以罗丹明B(RhB)为模拟污染物,探究了不同WO3/g-C3N4比例对光催化性能的影响,其中WO3/g-C3N4-20复合光催化剂显示了最优的降解效率,并通过捕获剂实验得出起到光催化作用的活性粒子为羟基自由基和超氧根离子。

关键词: 氧化钨; 石墨相氮化碳; 降解罗丹明B

 

中图分类号: O 643.36文献标志码: A

引用格式: 李龙飞, 杜芳林. WO3/g-C3N4异质光催化剂的合成及其对染料废水的降解\[J\]. 青岛科技大学学报(自然科学版), 2020, 41(2): 35-42.

LI Longfei, DU Fanglin. Synthesis of WO3/g-C3N4 heterogeneous photocatalyst and degradation of dye wastewater\[J\]. Journal of Qingdao University of Science and Technology(Natural Science Edition), 2020, 41(2): 35-42.

 

Synthesis of WO3/g-C3N4 Heterogeneous Photocatalyst

and Degradation of Dye Wastewater

 

LI Longfei, DU Fanglin

(College of Materials Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042, China)

 

Abstract: Graphite carbon nitride (g-C3N4) was prepared using urea by thermal polymerization. Tungsten oxide (WO3) nanosheets was prepared from sodium tungstate, hydrochloric acid and oxalic acid by precipitation. WO3/g-C3N4 composite was prepared by mixing them. The results show that WO3/g-C3N4 composite has good distribution. The influence of different ratio of WO3/g-C3N4 on photocatalytic performance was investigated, using rhodamine B (RhB) as probe. WO3/g-C3N4-20 composite photocatalyst shows the best degradation efficiency. Through the capture agent experiment, the active particles that play photocatalytic roles are hydroxyl radical and superoxide ion.

Key words: tungsten oxide; graphitic carbon nitride; degradation of rhodamine B

 

收稿日期:  2019-01-18

基金项目: 山东省软科学研究计划项目(J18KA011).

作者简介: 李龙飞(1993—), 男, 硕士研究生.*通信联系人.


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