摘要
采用一步溶剂热法成功制备了新型磁性纳米吸附剂Fe_(3)O_(4)-RGO-NH_(2),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Fe_(3)O_(4)-RGO-NH_(2)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。
A new type of magnetic nano-adsorbent Fe_(3)O_(4)-RGO-NH_(2) was successfully prepared by one-step solvothermal method.The morphology and crystal structure of the prepared Fe_(3)O_(4)-RGO-NH_(2) nano-adsorbent were characterized by transmission electron microscopy(TEM),X-ray diffraction(XRD),vibrating sample magnetometer(VSM)and Zeta potential.The adsorption performance of Fe_(3)O_(4)-RGO-NH_(2) 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.
作者
吴娟
贺沁婷
程庆霖
任芳
陈卓涵
赵雨
曾诗豪
张莹
WU Juan;HE Qin-ting;CHENG Qing-lin;REN Fang;CHEN Zhuo-han;ZHAO Yu;ZENG Shi-hao;ZHANG Ying(School of Chemical and Environmental Engineering,Jiangsu University of Technology,Changzhou 213001,Jiangsu,China)
出处
《贵金属》
CAS
北大核心
2021年第3期15-20,共6页
Precious Metals
基金
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)。
作者简介
第一作者:吴娟,女,博士,副教授,研究方向:功能无机纳米材料的制备及其在资源环境领域内的应用。E-mail:jintanwujuan@163.com。
