High Surface Area "3D Graphene Oxide" for Enhanced Sorption of Radionuclides

被引：21

作者：

Boulanger, Nicolas ^{[1
]}

Kuzenkova, Anastasiia S. ^{[2
]}

Iakunkov, Artem ^{[1
]}

Nordenstrom, Andreas ^{[1
]}

Romanchuk, Anna Yu ^{[2
]}

Trigub, Alexander L. ^{[2
,3
]}

Zasimov, Pavel, V ^{[2
]}

Prodana, Mariana ^{[4
]}

Enachescu, Marius ^{[4
,5
]}

Bauters, Stephen ^{[6
,7
]}

Amidani, Lucia ^{[6
,7
]}

Kvashnina, Kristina O. ^{[6
,7
]}

Kalmykov, Stepan N. ^{[2
]}

Talyzin, Alexandr, V ^{[1
]}

机构：

[1] Umea Univ, Dept Phys, S-90187 Umea, Sweden

[2] Lomonosov Moscow State Univ, Dept Chem, Moscow 119991, Russia

[3] Natl Res Ctr Kurchatov Inst, Moscow, Russia

[4] Univ Politehn Bucuresti, Ctr Surface Sci & Nanotechnol, Splaiul Independentei 313, Bucharest 060032, Romania

[5] Acad Romanian Scientists, Splaiul Independentei 54, Bucharest 050094, Romania

[6] Helmholtz Zentrum Dresden Rossendorf HZDR, Inst Resource Ecol, D-01314 Dresden, Germany

[7] European Synchrotron, Rossendorf Beamline ESRF, CS40220, F-38043 Grenoble 9, France

来源：

ADVANCED MATERIALS INTERFACES | 2022年 / 9卷 / 18期

基金：

瑞典研究理事会;

关键词：

graphene; graphene oxide; high surface area; radionuclides; sorption; ACTIVATED CARBON; ADSORPTION; OXIDATION; PERFORMANCE; CESIUM; U(VI); WATER; MONTMORILLONITE; SUPERCAPACITORS; TEMPERATURE;

D O I：

10.1002/admi.202200510

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Here preparation of high surface area activated reduced graphene oxide (arGO) oxidized into a 3D analogue of defect-rich GO (dGO) is reported. Surface oxidation of arGO results in carbon to oxygen ratio C/O = 3.3, similar to the oxidation state of graphene oxide while preserving high BET surface area of about 880 m(2) g(-1). Analysis of surface oxidized arGO shows high abundance of oxygen functional groups which converts hydrophobic precursor into hydrophilic material. High surface area carbons provide the whole surface for oxidation without the need of intercalation and lattice expansion. Therefore, surface oxidation methods are sufficient to convert the materials into 3D architectures with chemical properties similar to graphene oxide. The "3D graphene oxide" shows high sorption capacity for U(VI) removal in an extraordinary broad interval of pH. Notably, the surface oxidized carbon material has a rigid 3D structure with micropores accessible for penetration of radionuclide ions. Therefore, the bulk "3D GO" can be used as a sorbent directly without dispersing, the step required for GO to make its surface area accessible for pollutants.

引用

页数：9

共 64 条

[1] ADSORPTION OF URANIUM FROM AQUEOUS-SOLUTIONS USING ACTIVATED CARBON [J].