摘要
针对轻工业废水中大量以罗丹明B为印染性着色物质造成的难以利用生物手段解决的水体污染问题,在可见光光照下,尝试合成SiO_2/Bi_2WO_6中空复合微球,提出材料的形成机理,并检测材料的罗丹明B褪色效能。结果表明:以PS小球为模板通过冷凝回流等工艺获得的PS/SiO_2复合体可以作为理想的模板剂材料,通过后续的水热合成、高温煅烧等工艺可以获得质地坚实且多孔的SiO_2/Bi_2WO_6中空复合微球,其对于罗丹明B的脱色效果明显好于在其他条件下得到的Bi_2WO_6中空微球材料,在投入量均为80 mg的相同条件下对罗丹明B的可见光褪色率最高,可提升33. 87%。
Nonferrous materials,represented by rhodamine B,are difficult to degrade by biological means. Aiming at this problem,SiO2/Bi2WO6 hollow microspheres were synthesized under visible light illumination.The formation mechanism of the materials was proposed,and the fading performance of Rhodamine B was examined.The results show that the PS/SiO2 composite obtained by condensation reflux process using PS pellets as a template can be used as an ideal template material.Through the subsequent hydrothermal synthesis,high-temperature calcination processes,a solid and porous SiO2/Bi2WO6 hollow composite microsphere can be obtained,which has better decolorization effect on Rhodamine B than Bi2WO6 hollow microsphere material obtained under other conditions.Under the same conditions of 80 mg,visible light fading rate of Rhodamine B can be increased by33. 87%.
作者
李晓娜
LI Xiaona(Jilin Engineering Vocational College,Siping 136001,China)
出处
《吉林农业大学学报》
CAS
CSCD
北大核心
2018年第5期617-621,共5页
Journal of Jilin Agricultural University
基金
吉林省教育厅"十三五"科学研究规划项目(JJKH20170358KJ)
