摘要
以硝酸铋、PEG 4000、NaCl、KI和NaOH为原料,通过简单的液相沉淀法制备出组装态Bi5O7I纳米材料。通过XRD、XPS、SEM、UV-Vis等对所得产物进行测试和表征,研究了不同NaCl和KI的添加量对Bi5O7I的形成和光催化活性的影响,并对光催化反应机理进行了探索。结果表明,NaCl和KI的加入量分别为45 mL和5 mL时,所得Bi5O7I样品光催化性能最好;见光2 h后,对罗丹明B(RhB)、亚甲基蓝(MB)和环丙沙星(CIP)的光催化降解率分别为92.53%、88.15%、42.33%。
Assembled Bi5O7I nanomaterials are prepared by a simple liquid-phase precipitation method at 75℃through using bismuth nitrate,polyethylene glycol 4000(PEG 4000),sodium chloride,potassium iodide and sodium hydroxide as raw materials.The products are characterized by X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),scanning electron microscope(SEM)and ultraviolet-visible spectrophotometer(UV-Vis).Effects of different adding amounts of NaCl and KI on the formation of Bi5O7I and its photocatalytic activity are studied,and the photocatalytic mechanism is explored.It is shown that the best photocatalytic performance can be obtained by the Bi5O7I sample prepared under the conditions that the dosages of NaCl and KI are 45 mL and 5 mL,respectively,over which the degradation rates of Rh B,methylene blue and ciprofloxacin can reach 92.53%,88.15%,42.33%,respectively after 2 h of light irradiation.
作者
宋月红
代卫丽
周春生
赵杰
赵敬哲
SONG Yue-hong;DAI Wei-li;ZHOU Chun-sheng;ZHAO Jie;ZHAO Jing-zhe(Shaanxi Provincial Key Laboratory of Comprehensive Utilization of Tailings Resources,College of Chemical Engineering and Modern Materials,Shangluo University,Shangluo 726000,China;College of Chemistry and Chemical Engineering,Hunan University,Changsha 410082,China)
出处
《现代化工》
CAS
CSCD
北大核心
2020年第7期100-104,共5页
Modern Chemical Industry
基金
国家自然科学基金项目(21571057)
商洛学院科研项目资助(17SKY018)
陕西省教育厅重点实验室项目(19JS026)
陕西省自然科学基础研究计划资助项目(2019JQ-156)。
关键词
组装态
Bi5O7I纳米材料
液相沉淀法
光催化
降解机理
assembled state
Bi5O7I nanomaterials
liquid-phase precipitation method
photocatalytic
degradation mechanism
