王强1,宋金玲1,2,张胤1,2,杨帆1
(1.内蒙古科技大学材料与冶金学院 ,内蒙古 包头 014010;2.内蒙古科技大学 内蒙古自治区白云鄂博矿多金属资源综合利用重点实验室,省部共建国家重点实验室培养基地,内蒙古 包头 014010)
关键词:氯氧化铋;光催化;有机污染物
中图分类号:O643.36+1; O644.1; O649.1文献标识码:A
摘要:采用混合溶剂热法(无水乙醇、乙二醇和去离子水)及加入不同种类的酸(冰醋酸、柠檬酸、酒石酸、乳酸和苹果酸)来调节制备氯氧化铋(BiOCl),通过对其进行X射线衍射(X-ray)表征,得到了晶体结构完整的BiOCl.在对罗丹明B、甲基紫、藏红T和亚甲基蓝的降解显示,加入柠檬酸和酒石酸调节的BiOCl效果更好;进一步对甲基橙进行降解可知,柠檬酸来调节BiOCl效果更出色,光催化性能更好.运用扫描电镜(Scanningelectron microscopy)、紫外-可见漫反射光谱仪(Ultraviolet-visible spectroscopy)及光致发光光谱仪(Photoluminescence spectroscopy)检测,表明了五种BiOCl的吸光性强弱、光生电子-空穴的复合速率快慢以及机理分析.
The embellishment of bismuthoxychloride and its photocatalytic performance
WANGQiang1, SONG Jin-ling1,2, ZHANG Yin1,2, YANGFan1
(1.Material and MetallurgySchool, Inner Mongolia University of Science and Technology, Baotou 014010,China; 2.Inner Mongolia Key Laboratory for Utilization of Bayan OboMulti-Metallic Resources, State Key Laboratory, Inner Mongolia University ofScience and Technology, Baotou 014010, China)
Keywords:bismuth oxychloride; photocatalysis; organic pollutant
Abstract: Bismuth oxychloride (BiOCl) photocatalysts wasprepared by using hybrid solvothermal method (mixed with absolute ethyl alcohol,ethylene glycol, and deionized water) and adding different kinds of acid(glacial acetic acid, citric acid, tartaric acid, lactic acid and malic acid).Thephotocatalyst with the whole crystal texture was obtained, then characterizedby X-ray diffraction experiments. With the display of the degradation ofrhodamine B, methyl violet, safranine T and methylene blue, BiOCl with citricacid and tartaric acid has a better result . Ulteriorly, the photocatalyst ofBiOCl with citric acid is much better and exhibits excellent photocatalyticproperty in the degradation process of methyl orange simulation pollutants. Scanningelectron microscopy, ultraviolet-visible spectroscopy and photoluminescencespectroscopy were applied to indicate the optical absorption of the five BiOCl,the recombination rate of optical electronic-hole and mechanism analysis.