湖北民族大学学报（自然科学版）2024，Vol.42Issue(3)：324-329,342,7.DOI:10.13501/j.cnki.42-1908/n.2024.09.003
Mn掺杂赤铁矿的微观结构、表面性质及Se吸附特性研究
Study on Microstructure,Surface Properties and Se Adsorption Properties of Mn Doped Hematite
摘要
Abstract
In order to study the microstructure,surface properties of Mn doped hematite(Hem),and its adsorption characteristics of Se(IV),Hem and Mn doped Hem in different proportions(H-Mnx,x=0.1,0.2,0.3)were prepared.The samples were investigated by X-ray diffraction(XRD),transmission electron microscop(TEM),particle size distribution,Zeta potential analysis,and N2 isothermal adsorption-desorption experiment.The results showed that the crystal formation of Hem could be inhibited by Mn-doping.With increasing the Mn-doping ratio,the crystallinity and particle size of H-Mnx decreased gradually.Langmuir model(R2=0.9499～0.9986)and quasi-second-order kinetic model(R2=0.9924～0.9990)were used to describe the isothermal adsorption and kinetic adsorption processes of Se(IV)by Hem and H-Mnx respectively.With the increase of Mn-doping ratio,the adsorption capacity of H-Mnx for Se(IV)increased and the adsorption equilibrium time prolongated.The study helped to understand the interaction between iron oxides and Se in soil,and provided scientific basis for the morphological regulation and efficient utilization of Se in soil.关键词
赤铁矿/Mn掺杂/铁氧化物/表面性质/吸附/SeKey words
hematite/Mn doped/iron oxide/surface properties/adsorption/Se分类
化学化工引用本文复制引用
王宸思,牛鹏举,魏世勇..Mn掺杂赤铁矿的微观结构、表面性质及Se吸附特性研究[J].湖北民族大学学报（自然科学版）,2024,42(3):324-329,342,7.基金项目
国家自然科学基金项目(42067007) （42067007）
湖北省重点研发计划项目(2022BAD013) （2022BAD013）
硒资源研究与生物应用湖北省重点实验室开放基金项目(PT10202407). （PT10202407）
