A 3D porous carbon foam loaded with Fe3O4/graphene oxide for highly effective As(iii) removal

被引：8
作者：
Ge, Xiao [1 ,2 ]
Xie, Donghua [1 ,2 ]
Zhang, Yunxia [1 ]
机构：
[1] Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Key Lab Mat Phys,Ctr Environm & Energy Nanomat, Hefei 230031, Peoples R China
[2] Univ Sci & Technol China, Hefei 230026, Peoples R China
来源：
NEW JOURNAL OF CHEMISTRY | 2020年 / 44卷 / 30期
基金：
国家重点研发计划; 中国博士后科学基金; 中国国家自然科学基金;
关键词：
ONE-STEP SYNTHESIS; ARSENIC REMOVAL; HOLLOW MICROSPHERES; GRAPHENE OXIDE; IRON; ADSORPTION; OIL; NANOPARTICLES; COMPOSITES; MANGANESE;
D O I：
10.1039/d0nj02830d
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A 3D porous carbon foam (CF) loaded with Fe3O4/graphene oxide (GO) has been successfully fabricated. As expected, the saturated adsorption capacity of the resulting Fe3O4/GO-CF composite toward As(iii) can reach up to 111 mg g(-1), superior to those of most of the reported Fe-containing adsorbents. Additionally, the obtained Fe3O4/GO-CF exhibits excellent As(iii) removal performance after five absorption-regeneration cycles with more than 70% of removal efficiency. The exceptional arsenic removal performance can be ascribed to its unique 3D porous network structure as well as fully exposed sorption sites originating from Fe(3)O(4)particles. Finally, the macroscopic size and magnetic feature of the Fe3O4/GO-CF monolith are favorable for facile separation after adsorption. Therefore, the hierarchically porous Fe3O4/GO-CF monolith is highly expected to find many potential applications in arsenic-contaminated water remediation.
引用
收藏
页码：12926 / 12931
页数：6
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