Improved Removal of Cr(VI) using Fe3O4/C Magnetic Nanocomposites Derived from Potassium Fulvic Acid

被引：7
|
作者：
Su, Qiaohong [1 ,2 ]
Lin, Zhang [2 ]
Tian, Chen [2 ]
Su, Xintai [2 ]
Xue, Xiaogang [3 ]
Su, Zhi [1 ]
机构：
[1] Xinjiang Normal Univ, Coll Chem & Chem Engn, Urumqi 830054, Xinjianq, Peoples R China
[2] South China Univ Technol, Sch Environm & Energy, Key Lab Pollut Control & Ecosyst Restorat Ind Clu, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China
[3] Chinese Acad Sci, Fujian Inst Res Struct Matter, Fuzhou 350002, Peoples R China
来源：
CHEMISTRYSELECT | 2019年 / 4卷 / 46期
基金：
中国国家自然科学基金;
关键词：
Adsorption; Cr(VI); Iron oxide; Potassium fulvic acid (FA-K); HEXAVALENT CHROMIUM; EFFICIENT REMOVAL; ACTIVATED CARBON; AQUEOUS-SOLUTIONS; HIGHLY EFFICIENT; FACILE SYNTHESIS; CONGO RED; ADSORPTION; ADSORBENT; WATER;
D O I：
10.1002/slct.201903972
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The development of high performance magnetic nanomaterials has a good application prospect in wastewater treatment. Herein, Fe3O4/C nanocomposites was synthesized by ecofriendly hydrolysis-calcination method using potassium fulvic acid (FA-K) and FeCl3 center dot 6H(2)O as raw materials. The morphology of Fe3O4/C nanocomposites exhibited a loose pore structure with uniform size (a diameter similar to 27 nm). The prepared Fe3O4/C nanocomposites possessed excellent dispersibility and magnetic properties in aqueous solution. The removal efficiency and maximum adsorption capacity of Fe3O4/C nanocomposites were 98% and 64.0 mg g(-1), respectively. Moreover, it was confirmed that the adsorption mechanism of Cr(VI) contains electrostatic attraction and redox reaction. In this work, we provide a convenient means for manufacturing Fe3O4/C nanocomposites, and prove that FA-K is a cheap carbon source for manufacturing Fe3O4/C nanocomposites, which makes Fe3O4/C nanocomposites have potential application value in the effective adsorption of Cr(VI).
引用
收藏
页码：13656 / 13662
页数：7
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