摘要
设计了上转换发光材料协同-光催化技术共同处理有机污染物的综合实验。采用水热合成法制备了TiO_(2)/(Ca,Y)F_(2):Tm,Yb复合光催化剂,通过XRD、SEM、TEM和PL等对复合材料的形貌结构等进行表征;采用甲基橙(MO)模拟有机污染物,探讨复合材料光催化降解有机污染物的能力。实验结果表明,在红外光照射下复合光催化剂120 min内对MO的降解率达到56.1%,具有较高的光催化活性。复合光催化材料通过上转换技术将红外光上转至TiO_(2)光催化所需要的紫外光,有效扩展了光催化材料的光响应范围。
A comprehensive experiment was designed fortreatment of organic pollutants with up-conversion material and photocatalysis cooperative.TiO_(2)/(Ca,Y)F_(2):Tm,Yb ternary composite photocatalyst was prepared by hydrothermal synthesis method.The morphology and structure of the composite material were characterized by XRD,SEM,TEM and PL.The organic pollutant photocatalytic degradation of composite materials wasinvestigated by using methyl orange(MO)to simulate organic pollutants.The experiment shows that the degradation rate of MO was nearly 56.1%within 120 min under infrared light,which showed high photocatalytic activity.Takingadvantage of the up-conversion technology,the compositephotocatalyst could convertin frared lightintoultraviolet light required for TiO_(2) to function as photocatalyst,which effectively expands the light response range of photocatalytic materials.This experiment can not only increase students’understanding of the principle of semiconductor photocatalysis and up-conversion luminescence,but also stimulate students’interest in scientific research and improve their ability to solve practical problems in scientific research.
作者
王洪水
王东辉
李宝娥
康安
梁春永
赵晓艳
WANG Hongshui;WANG Donghui;LI Baoe;KANG An;LIANG Chunyong;ZHAO Xiaoyan(School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300130,China;School of Civil and Transportation Engineering,Hebei University of Technology,Tianjin 300130,China)
出处
《实验室研究与探索》
CAS
北大核心
2021年第12期51-55,共5页
Research and Exploration In Laboratory
基金
国家自然科学基金项目(51771069)
河北省自然科学基金项目(E2020202028)。
关键词
光催化
上转换发光
二氧化钛
水热合成
降解
photocatalysis
up-conversion luminescence
titanium dioxide(TiO2)
hydrothermal synthesis
degradation
