福建师范大学学报（自然科学版）2017，Vol.33Issue(3)：54-61,8.DOI:10.12046/j.issn.1000-5277.2017.03.009
改性绿色合成纳米氧化铁的特征及其对水溶液中Cd2+的吸附
Modification and Characterization of Green Synthesized Iron Oxide Nanoparticles Used for Adsorption of Cd2+ in Aqueous Solution
摘要
Abstract
Iron oxide nanoparticles (IONP) were synthesized by extracts obtained from Excoecaria cochinchinensis,Eucalptus and Cirmamomum camphora leaves.The adsorption of Cd2+ in aqueous solution using various IONP was compared,and the results show IONP from Excoecaria cochinchinensis (E-IONP) that was best.Hence,E-IONP was thermally treated at the range of 200～700 ℃ to understand the absorption ability on Cd2+.The highest adsorption capacity was observed at 300 ℃,with the adsorption quantity of 4.63 mg · g-1.XRD patterns showed that the E-IONP and E-IONP calcined at 200 2 were amorphous iron oxide,while were γ-Fe2O3 and Fe3O4 at 300 ℃.In addition,the results from BET shows that the surface area of E-IONP and E-IONP calcined at 200 ℃,300 ℃ was 5.645,86.167,62.219 m2 · g-1,respectively."S" type was observed the hysteresis loop of E-IONP calcined at 300 ℃ with superparamagnetism.The study shows that E-IONP is one of the most promising functional materials used for the future treatment of low-concentration heavy metal wastewater.关键词
纳米氧化铁/绿色合成/吸附/焙烧Key words
iron oxide nanoparticles/biosynthesis/adsorption/calcination分类
资源环境引用本文复制引用
陈波,林加奖,陈祖亮..改性绿色合成纳米氧化铁的特征及其对水溶液中Cd2+的吸附[J].福建师范大学学报（自然科学版）,2017,33(3):54-61,8.基金项目
国家自然科学基金资助项目(41501349) （41501349）
福建省自然科学基金资助项目(2015J05082) （2015J05082）
