A three-dimensional amylopectin-reduced graphene oxide framework for efficient adsorption and removal of hemoglobin

2015 ◽  
Vol 3 (6) ◽  
pp. 983-989 ◽  
Author(s):  
Yue Zhang ◽  
Jia-Wei Liu ◽  
Xu-Wei Chen ◽  
Jian-Hua Wang
Keyword(s):  
Graphene Oxide ◽  
Adsorption Capacity ◽  
Reduced Graphene Oxide ◽  
Three Dimensional ◽  
Maximum Adsorption Capacity ◽  
Reduced Graphene

A three-dimensional amylopectin-graphene oxide framework (AP-rGO) exhibits excellent adsorption toward hemoglobin with a maximum adsorption capacity of 1010 mg g−1.

scholarly journals Study on the adsorption of polystyrene microplastics by three-dimensional reduced graphene oxide

2020 ◽  
Vol 81 (10) ◽  
pp. 2163-2175 ◽  
Author(s):  
Fang Yuan ◽  
Lingzhi Yue ◽  
Han Zhao ◽  
Huifang Wu
Keyword(s):  
Graphene Oxide ◽  
Adsorption Capacity ◽  
Reduced Graphene Oxide ◽  
Tap Water ◽  
Three Dimensional ◽  
Ion Concentration ◽  
Maximum Adsorption Capacity ◽  
Order Kinetic ◽  
Freeze Dried ◽  
Reduced Graphene

Abstract In this paper, a study on the removal of imitated polystyrene (PS) microplastics in water was carried out based on the adsorption capacity of three-dimensional reduced graphene oxide (3D RGO). Scanning electron microscopy and X-ray diffractometry characterization showed that the freeze-dried 3D RGO formed a distinct porous spatial structure. Different experimental parameters, such as pH, ion concentration (C0), contact time (t), and temperature (T), were studied to investigate the PS microplastic adsorption performance of 3D RGO. The adsorption mechanism was mainly attributed to the strong π–π interaction between the carbon ring of 3D RGO and the benzene ring of PS microplastics. Sorption kinetic and isothermal data were obtained by the well-fitted Langmuir adsorption isotherm model and pseudo-second-order kinetic model. Furthermore, the result of thermodynamic analysis showed that the adsorption of PS microplastics was a spontaneous endothermic process. Under the optimal conditions of pH = 6, C0 = 600 mg/L, t = 120 min, and T = 26 °C, the maximum adsorption capacity of the prepared 3D RGO on PS microplastics was 617.28 mg/g. Furthermore, this method exhibited good feasibility in tap water and lake water.

A three-dimensional nickel-doped reduced graphene oxide composite for selective separation of hemoglobin with a high adsorption capacity

RSC Advances ◽  
2016 ◽  
Vol 6 (61) ◽  
pp. 56278-56286 ◽  
Author(s):  
Lei Chen ◽  
Zhang-Run Xu
Keyword(s):  
Graphene Oxide ◽  
Adsorption Capacity ◽  
Reduced Graphene Oxide ◽  
Self Assembly ◽  
Three Dimensional ◽  
High Adsorption ◽  
Reduced Graphene ◽  
One Step ◽  
Reduced Graphene Oxide Aerogel ◽  
High Adsorption Capacity

A 3D nickel-doped reduced graphene oxide aerogel was prepared by one-step reduction and self-assembly, which exhibited favorable selectivity and high adsorption capacity for isolating hemoglobin.

scholarly journals Directionally-Grown Carboxymethyl Cellulose/Reduced Graphene Oxide Aerogel with Excellent Structure Stability and Adsorption Capacity

Polymers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2219
Author(s):  
Mengke Zhao ◽  
Sufeng Zhang ◽  
Guigan Fang ◽  
Chen Huang ◽  
Ting Wu
Keyword(s):  
Graphene Oxide ◽  
Adsorption Capacity ◽  
Reduced Graphene Oxide ◽  
Carboxymethyl Cellulose ◽  
Organic Dyes ◽  
Structure Stability ◽  
Maximum Adsorption Capacity ◽  
Adsorption Model ◽  
Composite Aerogel ◽  
Reduced Graphene

A novel three-dimensional carboxymethyl cellulose (CMC)/reduced graphene oxide (rGO) composite aerogel crosslinked by poly (methyl vinyl ether-co-maleic acid)/poly (ethylene glycol) system via a directional freezing technique exhibits high structure stability while simultaneously maintaining its excellent adsorption capacity to remove organic dyes from liquid. A series of crosslinked aerogels with different amounts of GO were investigated for their adsorption capacity of methylene blue (MB), which were found to be superb adsorbents, and the maximum adsorption capacity reached 520.67 mg/g with the incorporation of rGO. The adsorption kinetics and isotherm studies revealed that the adsorption process followed the pseudo-second-order model and the Langmuir adsorption model, and the adsorption was a spontaneous process. Furthermore, the crosslinked aerogel can be easily recycled after washing with dilute HCl solution, which could retain over 97% of the adsorption capacity after recycling five times. These excellent properties endow the crosslinked CMC/rGO aerogel’s potential in wastewater treatment and environment protection.

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