有机膦酸改性碳纳米管/硫化铋复合材料的设计合成及其对Au(Ⅲ)的吸附性能研究
Design of Organophosphonic Acid-modified Carbon Nanotubes/Bismuth Sulfide Composites and Its Adsorption Properties for Au(Ⅲ)
张万松 1宋雨桐 1徐彦宾 1王峰 1张少华 1王颖 1杨正龙 1殷平1
作者信息
- 1. 鲁东大学 化学与材料科学学院,山东烟台 264039
- 折叠
摘要
本研究设计合成新型高效重金属吸附材料有机膦酸羧酸改性多壁碳纳米管/硫化铋(PBTCA-MWCNTs/Bi2S3),对材料进行了傅里叶红外光谱(FT-IR)、扫描电镜(SEM)、能谱(EDX)和X射线光电子能谱(XPS)等表征,并研究其对重金属离子的吸附性能.结果发现:PBTCA-MWCNTs/Bi2S3有优良的Au(Ⅲ)吸附性能;Langmuir模型拟合结果显示,材料在25℃时吸附容量达到1 655.50 mg·g-1.对该材料吸附热力学、吸附动力学和吸附选择性等方面的研究为Au(Ⅲ)回收提供了有效的技术支持.
Abstract
A new efficient heavy metal adsorption material,organic phosphonic acid carboxylic acid modified multi walled carbon nanotubes/bismuth sulfide(PBTCA-MWCNTs/Bi2S3),is designed and synthesized.It was characterized by Fourier transform infrared(FT-IR),scanning electron microscope(SEM),energy dispersive X-ray spectroscopy(EDX),and X-ray photoelectron spectroscopy(XPS),and its adsorption performance for heavy metal ions was studied.The research results show that PBTCA-MWCNTs/Bi2S3 has excellent adsorption properties for Au(Ⅲ),and the related fitting results of the Langmuir model show that its adsorption capacity can reach up to 1 655.50 mg·g-1 at 25 ℃.The studies on the adsorption thermodynamics,adsorption kinetics and adsorption selectivity could provide effective technical support for the recovery of Au(Ⅲ).
关键词
水处理/Au(Ⅲ)吸附/碳纳米管/膦酸/硫化铋Key words
water treatment/adsorption for Au(Ⅲ)/carbon nanotubes/organphosphonic acid/bismuth sulfide引用本文复制引用
基金项目
国家自然科学基金(51673090)
国家自然科学基金(51903114)
国家自然科学基金(51102127)
出版年
2024
NETL
NSTL
万方数据