摘要
针对有机污染物难降解的问题,采用水热法在不同温度和时间条件下制备了Se/MoSe2样品,研究了Se/MoSe2对有机染料的吸附效果。利用XRD、SEM、TEM和X射线荧光光谱等表征手段,发现样品含有Se和MoSe2两相,形貌是一些交错的纳米片自组装构成的花球状结构。试验表明:样品的比表面积随着水热时间和水热温度的增加而增大。当水热时间超过12 h,水热温度超过260℃,且在12 min的反应时间内,样品的吸附率都可以达到97%以上,这可能是由于比表面积的增加,游离Se存在,π-π相互作用和MoSe2表面疏水性共同作用的结果。
Aiming at the problem of the difficult degradation of organic pollutants,Se/MoSe2 samples were prepared by a hydrothermal method under different temperature and time conditions,and the adsorption effect of Se/MoSe2 on organic dyes was studied.With the aid of X-ray diffraction,scanning electron microscopy,transmission electron microscopy,and X-ray fluorescence spectroscopy,we found that the sample contained two phases of Se and MoSe2 and exhibited a morphology of flower globular structure composed of self-assembled staggered nanosheets.The specific surface area of the sample increased with an increase in the hydrothermal time and temperature.When the hydrothermal time exceeded 12 h and the hydrothermal temperature exceeded 260℃,the adsorption rate of the sample could reach 97%or more within a reaction time of 12 min.This may be caused by factors such as an increase in the specific surface area,the existence of free Se,and the combined action of theπ-πinteraction and the hydrophobicity of the surface of MoSe2.
作者
亓淑艳
赵亚栋
马宁龙
胥焕岩
刘志海
QI Shuyan;ZHAO Yadong;MA Ninglong;XU Huanyan;LIU Zhihai(School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150080, China;College of Science, Harbin Engineering University, Harbin 150001, China)
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2020年第5期747-752,共6页
Journal of Harbin Engineering University
基金
国家自然科学基金青年基金项目(51404083)。
关键词
水热法
非晶态
MoSe2
游离Se
花球状
吸附性
比表面积
罗丹明B
hydrothermal method
amorphous state
MoSe2
free Se
flower globular
adsorption
specific surface area
rhodamine B
