Polymeric ionic liquid modified reduced graphene oxide as adsorbent for highly selective isolation of acidic protein

RSC Advances ◽  
2014 ◽  
Vol 4 (106) ◽  
pp. 61936-61943 ◽  
Author(s):  
Jia-Wei Liu ◽  
Meng-Meng Wang ◽  
Yue Zhang ◽  
Lu Han ◽  
Xu-Wei Chen ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Sorption Capacity ◽  
Selective Adsorption ◽  
Selective Isolation ◽  
High Sorption Capacity ◽  
Polymeric Ionic Liquid ◽  
Reduced Graphene ◽  
High Sorption

A novel adsorbent is achieved by modifying reduced graphene oxide with polymeric ionic liquid and further assembly on SiO2 nanoparticles. This nano-hybrid exhibits selective adsorption of ovalbumin with an ultra-high sorption capacity.

One-pot hydrothermal synthesis of Ag-reduced graphene oxide composite with ionic liquid

2011 ◽  
Vol 21 (21) ◽  
pp. 7795 ◽  
Author(s):  
Jianfeng Shen ◽  
Min Shi ◽  
Bo Yan ◽  
Hongwei Ma ◽  
Na Li ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Graphene Oxide ◽  
Hydrothermal Synthesis ◽  
Reduced Graphene Oxide ◽  
One Pot ◽  
Oxide Composite ◽  
Reduced Graphene

Fabrication of a phosphorylated graphene oxide–chitosan composite for highly effective and selective capture of U(vi)

2017 ◽  
Vol 4 (9) ◽  
pp. 1876-1886 ◽  
Author(s):  
Yawen Cai ◽  
Chunfang Wu ◽  
Zhiyong Liu ◽  
Linjuan Zhang ◽  
Lanhua Chen ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Sorption Capacity ◽  
High Sorption Capacity ◽  
Highly Effective ◽  
High Sorption ◽  
Chitosan Composite

The synthesized GO–CS–P exhibits ultrafast removal kinetics, high sorption capacity and great selectivity towards U(vi).

Unexpected Selective Absorption of Lithium in Thermally Reduced Graphene Oxide Membranes

2021 ◽  
Vol 38 (11) ◽  
pp. 116802
Author(s):  
Jie Jiang ◽  
Liuhua Mu ◽  
Yu Qiang ◽  
Yizhou Yang ◽  
Zhikun Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Selective Adsorption ◽  
Lithium Ion ◽  
Experimental Treatment ◽  
Selective Absorption ◽  
Confined Space ◽  
Mass Ratio ◽  
Valence States ◽  
Reduced Graphene

Lithium plays an increasingly important role in scientific and industrial processes, and it is extremely important to extract lithium from a high Mg2+/Li+ mass ratio brine or to recover lithium from the leachate of spent lithium-ion batteries. Conventional wisdom shows that Li+ with low valence states has a much weaker adsorption (and absorption energy) with graphene than multivalent ions such as Mg2+. Here, we show the selective adsorption of Li+ in thermally reduced graphene oxide (rGO) membranes over other metal ions such as Mg2+, Co2+, Mn2+, Ni2+, or Fe2+. Interestingly, the adsorption strength of Li+ reaches up to 5 times the adsorption strength of Mg2+, and the mass ratio of a mixed Mg2+/Li+ solution at a very high value of 500 : 1 can be effectively reduced to 0.7 : 1 within only six experimental treatment cycles, demonstrating the excellent applicability of the rGO membranes in the Mg2+/Li+ separation. A theoretical analysis indicates that this unexpected selectivity is attributed to the competition between cation–π interaction and steric exclusion when hydrated cations enter the confined space of the rGO membranes.

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