| 秦君,张潇,李小梅,李悦,张瑜,刘志雄,覃文亮,白云峰,冯锋.化学通报,2024,87(5):593-597. |
| 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 |
| 投稿时间：2023-10-12 修订日期：2023-11-09 |
| DOI： |
| 中文关键词: 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 |
| 英文关键词:Mercapto-functional silica graphene composites, Hydrothermal method, Adsorption of heavy metal ions, Reusable |
| 基金项目:大同市科技计划应用基础研究项目(No.2023056)、山西大同大学科研项目(2020YGZX009)和研究生教育改革项目(23JG06)资助 |
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| 中文摘要: |
| 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的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?1。MFS易于合成且应用经济性良好，MFSGA的结构稳定性良好、易于回收与重复利用，具有较大的应用潜力。 |
| 英文摘要: |
| 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. XRD, SEM, FTIR, and other methods characterized the materials. 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 by detecting the adsorption of Hg2+ via XRF. MFS and MFSGA show higher heavy metal ions adsorption performance than pure GA, especially Hg2+. The saturated adsorption capacities of Hg2+ by MFS and MFSGA were 260.19 and 158.06 mg?g?1 at pH of 5, respectively. MFS is easy to synthesize and has a good economy. MFSGA, with good structural stability, has the advantages of easy recovery and reuse, exhibiting broad application potential in heavy metal removal. |
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