巯基硅球石墨烯复合材料的合成与重金属离子吸附
Synthesis and Adsorption of Heavy Metal Ions of Mercapto-Functional Silica Spheres Graphene Composites
秦君 1张潇 1李小梅 1李悦 1张瑜 1刘志雄 1覃文亮 1白云峰 1冯锋2
作者信息
- 1. 山西大同大学化学与化工学院 大同 037009
- 2. 山西能源学院能源化学与材料工程系 太原 030600
- 折叠
摘要
采用一锅法和水热法分别合成了单分散巯基修饰氧化硅球(MFS)及其石墨烯超轻复合材料(MFSGA).利用X射线衍射、扫描电镜、红外光谱等方法对MFS和MFSGA的材料结构和形貌进行表征.MFSGA表现出良好的结构强度,MFS在复合材料中均匀分散.考察了材料粒径、修饰剂种类等因素对MFS形貌和表面结构的影响.采用X射线荧光法测试了 MFS和MFSGA对Hg2+等重金属离子的吸附特性,二者对Hg2+的饱和吸附量分别为260.19和158.06 mg/g.MFS易于合成且应用经济性良好,MFSGA的结构稳定性好,易于回收与重复利用,具有较大的应用潜力.
Abstract
Monodispersed mercapto-functional silica sphere(MFS)was prepared by the one-pot method,and MFS graphene aerogel ultra-light composite(MFSGA)was further synthesized by the hydrothermal method.The structure and morphology of these materials were characterized using XRD,SEM,FTIR,and other methods.MFSGA exhibited excellent structure strength,while MFS particles were fully loaded by the graphene aerogel(GA)framework and highly uniformly dispersed.The influence of the TEOS addition,the selection of modifier,and other factors on the MFS morphology and structure were investigated.The adsorption characteristics of MFS and MFSGA for heavy metal ions such as Hg2+were tested using X-ray fluorescence method,and their saturated adsorption capacities for Hg2+were 260.19 and 158.06 mg/g,respectively.MFS is easy to synthesize and has a good application economy.MFSGA,with good structural stability,has the advantages of easy recovery and reuse,exhibiting broad application potential in heavy metal removal.
关键词
巯基硅球石墨烯复合材料/水热合成法/重金属离子吸附/可重复利用Key words
Mercapto-functional silica graphene composites/Hydrothermal method/Adsorption of heavy metal ions/Reusable引用本文复制引用
基金项目
大同市科技计划应用基础研究项目(2023056)
山西大同大学科研项目(2020YGZX009)
研究生教育改革项目(23JG06)
出版年
2024
NETL
NSTL
万方数据