摘要
甲醛是一种常见的室内污染物,对人体健康有极大的危害。以钛酸四丁酯为前驱体,Fe(NO_(3))_(3)和硫脲分别为Fe、S掺杂源,纳米碳球为模板,制备Fe、S共掺杂TiO_(2)空心球(Fe/S-THs)。采用丝网印刷法在牛皮纸载体上制备TiO_(2)空心球(THs)膜,并测试空心球膜对甲醛的光催化降解活性。借助X射线衍射仪、扫描电子显微镜、能谱分析仪、比表面积分析仪、紫外-可见漫反射光谱仪对复合膜的结构和形貌进行表征。结果表明,所制备空心球的直径均为200~300 nm,Fe/S-THs具有良好的可见光吸收性能;0.50 Fe/S-THs膜与THs膜相比具有更佳的紫外光、可见光催化降解活性,在可见光照射下经5次循环使用后催化降解率仅下降6%。
Formaldehyde is a common indoor air pollutant,which has great harm to human health.In this paper,Fe/S-codoped TiO_(2)hollow spheres(Fe/S-THs)were prepared by using tetrabutyl titanate and nano carbon spheres as precursor and template,Fe(NO_(3))_(3)and thiourea as Fe and S doping sources,respectively.TiO_(2)hollow spherical films(THs)were prepared by screen printing method with brown paper as the carrier,the photocatalysis degradation activity of hollow spherical films of formaldehyde was also tested.The samples were characterized by X-ray diffractometer(XRD),scanning electron microscope(SEM),energy dispersive spectromete(EDS),Brunauer-Emmett-Teller(BET)and UV-Vis diffuse reflectance spectrum.The results indicated that the diameter of the prepared hollow spheres was 200~300 nm,and Fe/S-THs exhibited good visible light absorption performance.Compared with pure THs film,0.50 Fe/S-THs film had the better UV and visible photocatalytic degradation activity.The catalytic efficiency of the 0.50 Fe/S-THs film decreased only 6%after 5 cycles under visible light irradiation.
作者
林晓霞
谢沁雯
韦鹏飞
叶原丰
顾伟霞
LIN Xiao-xia;XIE Qin-wen;WEI Peng-fei;YE Yuan-feng;GU Wei-xia(Jinling Institute of Technology,Nanjing 211169,China)
出处
《金陵科技学院学报》
2022年第2期59-64,共6页
Journal of Jinling Institute of Technology
基金
金陵科技学院大学生创新训练计划项目(202113573092M)
金陵科技学院校级教育教改研究课题(JYJG202137)。
