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| 磁性纳米材料Fe3O4-RGO-NH2对Ag+的吸附性能研究 |
| Study on adsorption performance of magnetic nano material Fe3O4-RGO-NH2 for Ag+ |
| 投稿时间：2020-12-17 |
| DOI： |
| 中文关键词: 磁性 纳米吸附剂 制备 银离子(Ag+) 捕获性能 |
| 英文关键词: magnetism nano-adsorbent preparation silver ions (Ag+) capture performance |
| 基金项目:国家自然科学基金青年项目(51902141)；江苏省自然科学青年基金(BK20191038)；常州市科技计划项目(CJ20210072)；江苏理工学院人才引进项目(KYY17021)；2021年大学生创新创业训练计划江苏省重点项目(202111463009Z) |
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| 中文摘要: |
| 采用一步溶剂热法成功制备了新型磁性纳米吸附剂Fe3O4-RGO-NH2，用透射电子显微镜(TEM)、X射线衍射(XRD)、振动样品磁力计(VSM)及Zeta电势对其形貌及晶型结构进行了表征，研究了Fe3O4-RGO-NH2纳米吸附剂对水溶液中Ag+的吸附性能。结果表明，水溶液pH值对Ag+吸附具有很大影响，pH=4.0时吸附效果最佳。Ag+最大吸附量随着初始浓度及吸附时间的增加而增加，Ag+的吸附符合准二级动力学模型。 |
| 英文摘要: |
| A new type of magnetic nano-adsorbent Fe3O4-RGO-NH2 was successfully prepared by one-step solvothermal method. The morphology and crystal structure of the prepared Fe3O4-RGO-NH2 nano-adsorbent were characterized by transmission electron microscopy(TEM), X-ray diffraction(XRD), vibrating sample magnetometer(VSM) and Zeta potential. The adsorption performance of Fe3O4-RGO- NH2 nano-adsorbent for Ag+ in aqueous solution was studied. The results showed that the pH value of the aqueous solution had a major impact on Ag+ adsorption, and that the adsorption effect was the best when pH=4.0. The maximum adsorption capacity of Ag+ increases with initial concentration and adsorption time, and the adsorption process of Ag+ is the pseudo-second-order kinetics model. |
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